Provided by: samba-common-bin_3.6.3-2ubuntu2_amd64 bug

NAME

       smb.conf - The configuration file for the Samba suite

SYNOPSIS

       The smb.conf file is a configuration file for the Samba suite.  smb.conf contains runtime
       configuration information for the Samba programs. The smb.conf file is designed to be
       configured and administered by the swat(8) program. The complete description of the file
       format and possible parameters held within are here for reference purposes.

FILE FORMAT

       The file consists of sections and parameters. A section begins with the name of the
       section in square brackets and continues until the next section begins. Sections contain
       parameters of the form:

           name = value

       The file is line-based - that is, each newline-terminated line represents either a
       comment, a section name or a parameter.

       Section and parameter names are not case sensitive.

       Only the first equals sign in a parameter is significant. Whitespace before or after the
       first equals sign is discarded. Leading, trailing and internal whitespace in section and
       parameter names is irrelevant. Leading and trailing whitespace in a parameter value is
       discarded. Internal whitespace within a parameter value is retained verbatim.

       Any line beginning with a semicolon (“;”) or a hash (“#”) character is ignored, as are
       lines containing only whitespace.

       Any line ending in a “\” is continued on the next line in the customary UNIX fashion.

       The values following the equals sign in parameters are all either a string (no quotes
       needed) or a boolean, which may be given as yes/no, 1/0 or true/false. Case is not
       significant in boolean values, but is preserved in string values. Some items such as
       create masks are numeric.

SECTION DESCRIPTIONS

       Each section in the configuration file (except for the [global] section) describes a
       shared resource (known as a “share”). The section name is the name of the shared resource
       and the parameters within the section define the shares attributes.

       There are three special sections, [global], [homes] and [printers], which are described
       under special sections. The following notes apply to ordinary section descriptions.

       A share consists of a directory to which access is being given plus a description of the
       access rights which are granted to the user of the service. Some housekeeping options are
       also specifiable.

       Sections are either file share services (used by the client as an extension of their
       native file systems) or printable services (used by the client to access print services on
       the host running the server).

       Sections may be designated guest services, in which case no password is required to access
       them. A specified UNIX guest account is used to define access privileges in this case.

       Sections other than guest services will require a password to access them. The client
       provides the username. As older clients only provide passwords and not usernames, you may
       specify a list of usernames to check against the password using the user = option in the
       share definition. For modern clients such as Windows 95/98/ME/NT/2000, this should not be
       necessary.

       The access rights granted by the server are masked by the access rights granted to the
       specified or guest UNIX user by the host system. The server does not grant more access
       than the host system grants.

       The following sample section defines a file space share. The user has write access to the
       path /home/bar. The share is accessed via the share name foo:

                [foo]
                path = /home/bar
                read only = no

       The following sample section defines a printable share. The share is read-only, but
       printable. That is, the only write access permitted is via calls to open, write to and
       close a spool file. The guest ok parameter means access will be permitted as the default
       guest user (specified elsewhere):

                [aprinter]
                path = /usr/spool/public
                read only = yes
                printable = yes
                guest ok = yes

SPECIAL SECTIONS

   The [global] section
       Parameters in this section apply to the server as a whole, or are defaults for sections
       that do not specifically define certain items. See the notes under PARAMETERS for more
       information.

   The [homes] section
       If a section called [homes] is included in the configuration file, services connecting
       clients to their home directories can be created on the fly by the server.

       When the connection request is made, the existing sections are scanned. If a match is
       found, it is used. If no match is found, the requested section name is treated as a
       username and looked up in the local password file. If the name exists and the correct
       password has been given, a share is created by cloning the [homes] section.

       Some modifications are then made to the newly created share:

       ·   The share name is changed from homes to the located username.

       ·   If no path was given, the path is set to the user´s home directory.

       If you decide to use a path = line in your [homes] section, it may be useful to use the %S
       macro. For example:

           path = /data/pchome/%S

       is useful if you have different home directories for your PCs than for UNIX access.

       This is a fast and simple way to give a large number of clients access to their home
       directories with a minimum of fuss.

       A similar process occurs if the requested section name is “homes”, except that the share
       name is not changed to that of the requesting user. This method of using the [homes]
       section works well if different users share a client PC.

       The [homes] section can specify all the parameters a normal service section can specify,
       though some make more sense than others. The following is a typical and suitable [homes]
       section:

           [homes]
           read only = no

       An important point is that if guest access is specified in the [homes] section, all home
       directories will be visible to all clients without a password. In the very unlikely event
       that this is actually desirable, it is wise to also specify read only access.

       The browseable flag for auto home directories will be inherited from the global browseable
       flag, not the [homes] browseable flag. This is useful as it means setting browseable = no
       in the [homes] section will hide the [homes] share but make any auto home directories
       visible.

   The [printers] section
       This section works like [homes], but for printers.

       If a [printers] section occurs in the configuration file, users are able to connect to any
       printer specified in the local host´s printcap file.

       When a connection request is made, the existing sections are scanned. If a match is found,
       it is used. If no match is found, but a [homes] section exists, it is used as described
       above. Otherwise, the requested section name is treated as a printer name and the
       appropriate printcap file is scanned to see if the requested section name is a valid
       printer share name. If a match is found, a new printer share is created by cloning the
       [printers] section.

       A few modifications are then made to the newly created share:

       ·   The share name is set to the located printer name

       ·   If no printer name was given, the printer name is set to the located printer name

       ·   If the share does not permit guest access and no username was given, the username is
           set to the located printer name.

       The [printers] service MUST be printable - if you specify otherwise, the server will
       refuse to load the configuration file.

       Typically the path specified is that of a world-writeable spool directory with the sticky
       bit set on it. A typical [printers] entry looks like this:

           [printers]
           path = /usr/spool/public
           guest ok = yes
           printable = yes

       All aliases given for a printer in the printcap file are legitimate printer names as far
       as the server is concerned. If your printing subsystem doesn´t work like that, you will
       have to set up a pseudo-printcap. This is a file consisting of one or more lines like
       this:

           alias|alias|alias|alias...

       Each alias should be an acceptable printer name for your printing subsystem. In the
       [global] section, specify the new file as your printcap. The server will only recognize
       names found in your pseudo-printcap, which of course can contain whatever aliases you
       like. The same technique could be used simply to limit access to a subset of your local
       printers.

       An alias, by the way, is defined as any component of the first entry of a printcap record.
       Records are separated by newlines, components (if there are more than one) are separated
       by vertical bar symbols (|).

           Note
           On SYSV systems which use lpstat to determine what printers are defined on the system
           you may be able to use printcap name = lpstat to automatically obtain a list of
           printers. See the printcap name option for more details.

USERSHARES

       Starting with Samba version 3.0.23 the capability for non-root users to add, modify, and
       delete their own share definitions has been added. This capability is called usershares
       and is controlled by a set of parameters in the [global] section of the smb.conf. The
       relevant parameters are :

       usershare allow guests
           Controls if usershares can permit guest access.

       usershare max shares
           Maximum number of user defined shares allowed.

       usershare owner only
           If set only directories owned by the sharing user can be shared.

       usershare path
           Points to the directory containing the user defined share definitions. The filesystem
           permissions on this directory control who can create user defined shares.

       usershare prefix allow list
           Comma-separated list of absolute pathnames restricting what directories can be shared.
           Only directories below the pathnames in this list are permitted.

       usershare prefix deny list
           Comma-separated list of absolute pathnames restricting what directories can be shared.
           Directories below the pathnames in this list are prohibited.

       usershare template share
           Names a pre-existing share used as a template for creating new usershares. All other
           share parameters not specified in the user defined share definition are copied from
           this named share.

       To allow members of the UNIX group foo to create user defined shares, create the directory
       to contain the share definitions as follows:

       Become root:

           mkdir /usr/local/samba/lib/usershares
           chgrp foo /usr/local/samba/lib/usershares
           chmod 1770 /usr/local/samba/lib/usershares

       Then add the parameters

                usershare path = /usr/local/samba/lib/usershares
                usershare max shares = 10 # (or the desired number of shares)

       to the global section of your smb.conf. Members of the group foo may then manipulate the
       user defined shares using the following commands.

       net usershare add sharename path [comment] [acl] [guest_ok=[y|n]]
           To create or modify (overwrite) a user defined share.

       net usershare delete sharename
           To delete a user defined share.

       net usershare list wildcard-sharename
           To list user defined shares.

       net usershare info wildcard-sharename
           To print information about user defined shares.

PARAMETERS

       Parameters define the specific attributes of sections.

       Some parameters are specific to the [global] section (e.g., security). Some parameters are
       usable in all sections (e.g., create mask). All others are permissible only in normal
       sections. For the purposes of the following descriptions the [homes] and [printers]
       sections will be considered normal. The letter G in parentheses indicates that a parameter
       is specific to the [global] section. The letter S indicates that a parameter can be
       specified in a service specific section. All S parameters can also be specified in the
       [global] section - in which case they will define the default behavior for all services.

       Parameters are arranged here in alphabetical order - this may not create best bedfellows,
       but at least you can find them! Where there are synonyms, the preferred synonym is
       described, others refer to the preferred synonym.

VARIABLE SUBSTITUTIONS

       Many of the strings that are settable in the config file can take substitutions. For
       example the option “path = /tmp/%u” is interpreted as “path = /tmp/john” if the user
       connected with the username john.

       These substitutions are mostly noted in the descriptions below, but there are some general
       substitutions which apply whenever they might be relevant. These are:

       %U
           session username (the username that the client wanted, not necessarily the same as the
           one they got).

       %G
           primary group name of %U.

       %h
           the Internet hostname that Samba is running on.

       %m
           the NetBIOS name of the client machine (very useful).

           This parameter is not available when Samba listens on port 445, as clients no longer
           send this information. If you use this macro in an include statement on a domain that
           has a Samba domain controller be sure to set in the [global] section smb ports = 139.
           This will cause Samba to not listen on port 445 and will permit include functionality
           to function as it did with Samba 2.x.

       %L
           the NetBIOS name of the server. This allows you to change your config based on what
           the client calls you. Your server can have a “dual personality”.

       %M
           the Internet name of the client machine.

       %R
           the selected protocol level after protocol negotiation. It can be one of CORE,
           COREPLUS, LANMAN1, LANMAN2 or NT1.

       %d
           the process id of the current server process.

       %a
           The architecture of the remote machine. It currently recognizes Samba (Samba), the
           Linux CIFS file system (CIFSFS), OS/2, (OS2), Mac OS X (OSX), Windows for Workgroups
           (WfWg), Windows 9x/ME (Win95), Windows NT (WinNT), Windows 2000 (Win2K), Windows XP
           (WinXP), Windows XP 64-bit(WinXP64), Windows 2003 including 2003R2 (Win2K3), and
           Windows Vista (Vista). Anything else will be known as UNKNOWN.

       %I
           the IP address of the client machine.

           Before 3.6.0 it could contain IPv4 mapped IPv6 addresses, now it only contains IPv4 or
           IPv6 addresses.

       %i
           the local IP address to which a client connected.

           Before 3.6.0 it could contain IPv4 mapped IPv6 addresses, now it only contains IPv4 or
           IPv6 addresses.

       %T
           the current date and time.

       %D
           name of the domain or workgroup of the current user.

       %w
           the winbind separator.

       %$(envvar)
           the value of the environment variable envar.

       The following substitutes apply only to some configuration options (only those that are
       used when a connection has been established):

       %S
           the name of the current service, if any.

       %P
           the root directory of the current service, if any.

       %u
           username of the current service, if any.

       %g
           primary group name of %u.

       %H
           the home directory of the user given by %u.

       %N
           the name of your NIS home directory server. This is obtained from your NIS auto.map
           entry. If you have not compiled Samba with the --with-automount option, this value
           will be the same as %L.

       %p
           the path of the service´s home directory, obtained from your NIS auto.map entry. The
           NIS auto.map entry is split up as %N:%p.

       There are some quite creative things that can be done with these substitutions and other
       smb.conf options.

NAME MANGLING

       Samba supports name mangling so that DOS and Windows clients can use files that don´t
       conform to the 8.3 format. It can also be set to adjust the case of 8.3 format filenames.

       There are several options that control the way mangling is performed, and they are grouped
       here rather than listed separately. For the defaults look at the output of the testparm
       program.

       These options can be set separately for each service.

       The options are:

       case sensitive = yes/no/auto
           controls whether filenames are case sensitive. If they aren´t, Samba must do a
           filename search and match on passed names. The default setting of auto allows clients
           that support case sensitive filenames (Linux CIFSVFS and smbclient 3.0.5 and above
           currently) to tell the Samba server on a per-packet basis that they wish to access the
           file system in a case-sensitive manner (to support UNIX case sensitive semantics). No
           Windows or DOS system supports case-sensitive filename so setting this option to auto
           is that same as setting it to no for them. Default auto.

       default case = upper/lower
           controls what the default case is for new filenames (ie. files that don´t currently
           exist in the filesystem). Default lower. IMPORTANT NOTE: As part of the optimizations
           for directories containing large numbers of files, the following special case applies.
           If the options case sensitive = yes, preserve case = No, and short preserve case = No
           are set, then the case of all incoming client filenames, not just new filenames, will
           be modified. See additional notes below.

       preserve case = yes/no
           controls whether new files (ie. files that don´t currently exist in the filesystem)
           are created with the case that the client passes, or if they are forced to be the
           default case. Default yes.

       short preserve case = yes/no
           controls if new files (ie. files that don´t currently exist in the filesystem) which
           conform to 8.3 syntax, that is all in upper case and of suitable length, are created
           upper case, or if they are forced to be the default case. This option can be used with
           preserve case = yes to permit long filenames to retain their case, while short names
           are lowercased. Default yes.

       By default, Samba 3.0 has the same semantics as a Windows NT server, in that it is case
       insensitive but case preserving. As a special case for directories with large numbers of
       files, if the case options are set as follows, "case sensitive = yes", "case preserve =
       no", "short preserve case = no" then the "default case" option will be applied and will
       modify all filenames sent from the client when accessing this share.

NOTE ABOUT USERNAME/PASSWORD VALIDATION

       There are a number of ways in which a user can connect to a service. The server uses the
       following steps in determining if it will allow a connection to a specified service. If
       all the steps fail, the connection request is rejected. However, if one of the steps
       succeeds, the following steps are not checked.

       If the service is marked “guest only = yes” and the server is running with share-level
       security (“security = share”, steps 1 to 5 are skipped.

        1. If the client has passed a username/password pair and that username/password pair is
           validated by the UNIX system´s password programs, the connection is made as that
           username. This includes the \\server\service%username method of passing a username.

        2. If the client has previously registered a username with the system and now supplies a
           correct password for that username, the connection is allowed.

        3. The client´s NetBIOS name and any previously used usernames are checked against the
           supplied password. If they match, the connection is allowed as the corresponding user.

        4. If the client has previously validated a username/password pair with the server and
           the client has passed the validation token, that username is used.

        5. If a user = field is given in the smb.conf file for the service and the client has
           supplied a password, and that password matches (according to the UNIX system´s
           password checking) with one of the usernames from the user = field, the connection is
           made as the username in the user = line. If one of the usernames in the user = list
           begins with a @, that name expands to a list of names in the group of the same name.

        6. If the service is a guest service, a connection is made as the username given in the
           guest account = for the service, irrespective of the supplied password.

REGISTRY-BASED CONFIGURATION

       Starting with Samba version 3.2.0, the capability to store Samba configuration in the
       registry is available. The configuration is stored in the registry key
       HKLM\Software\Samba\smbconf. There are two levels of registry configuration:

        1. Share definitions stored in registry are used. This is triggered by setting the global
           parameter registry shares to “yes” in smb.conf.

           The registry shares are loaded not at startup but on demand at runtime by smbd. Shares
           defined in smb.conf take priority over shares of the same name defined in registry.

        2. Global smb.conf options stored in registry are used. This can be activated in two
           different ways:

           Firstly, a registry only configuration is triggered by setting config backend =
           registry in the [global] section of smb.conf. This resets everything that has been
           read from config files to this point and reads the content of the global configuration
           section from the registry. This is the recommended method of using registry based
           configuration.

           Secondly, a mixed configuration can be activated by a special new meaning of the
           parameter include = registry in the [global] section of smb.conf. This reads the
           global options from registry with the same priorities as for an include of a text
           file. This may be especially useful in cases where an initial configuration is needed
           to access the registry.

           Activation of global registry options automatically activates registry shares. So in
           the registry only case, shares are loaded on demand only.

       Note: To make registry-based configurations foolproof at least to a certain extent, the
       use of lock directory and config backend inside the registry configuration has been
       disabled: Especially by changing the lock directory inside the registry configuration, one
       would create a broken setup where the daemons do not see the configuration they loaded
       once it is active.

       The registry configuration can be accessed with tools like regedit or net (rpc) registry
       in the key HKLM\Software\Samba\smbconf. More conveniently, the conf subcommand of the
       net(8) utility offers a dedicated interface to read and write the registry based
       configuration locally, i.e. directly accessing the database file, circumventing the
       server.

EXPLANATION OF EACH PARAMETER

       abort shutdown script (G)

           This a full path name to a script called by smbd(8) that should stop a shutdown
           procedure issued by the shutdown script.

           If the connected user posseses the SeRemoteShutdownPrivilege, right, this command will
           be run as root.

           Default: abort shutdown script = ""

           Example: abort shutdown script = /sbin/shutdown -c

       access based share enum (S)

           If this parameter is yes for a service, then the share hosted by the service will only
           be visible to users who have read or write access to the share during share
           enumeration (for example net view \\sambaserver). This has parallels to access based
           enumeration, the main difference being that only share permissions are evaluated, and
           security descriptors on files contained on the share are not used in computing
           enumeration access rights.

           Default: access based share enum = no

       acl check permissions (S)

           This boolean parameter controls what smbd(8)does on receiving a protocol request of
           "open for delete" from a Windows client. If a Windows client doesn´t have permissions
           to delete a file then they expect this to be denied at open time. POSIX systems
           normally only detect restrictions on delete by actually attempting to delete the file
           or directory. As Windows clients can (and do) "back out" a delete request by unsetting
           the "delete on close" bit Samba cannot delete the file immediately on "open for
           delete" request as we cannot restore such a deleted file. With this parameter set to
           true (the default) then smbd checks the file system permissions directly on "open for
           delete" and denies the request without actually deleting the file if the file system
           permissions would seem to deny it. This is not perfect, as it´s possible a user could
           have deleted a file without Samba being able to check the permissions correctly, but
           it is close enough to Windows semantics for mostly correct behaviour. Samba will
           correctly check POSIX ACL semantics in this case.

           If this parameter is set to "false" Samba doesn´t check permissions on "open for
           delete" and allows the open. If the user doesn´t have permission to delete the file
           this will only be discovered at close time, which is too late for the Windows user
           tools to display an error message to the user. The symptom of this is files that
           appear to have been deleted "magically" re-appearing on a Windows explorer refresh.
           This is an extremely advanced protocol option which should not need to be changed.
           This parameter was introduced in its final form in 3.0.21, an earlier version with
           slightly different semantics was introduced in 3.0.20. That older version is not
           documented here.

           Default: acl check permissions = True

       acl compatibility (G)

           This parameter specifies what OS ACL semantics should be compatible with. Possible
           values are winnt for Windows NT 4, win2k for Windows 2000 and above and auto. If you
           specify auto, the value for this parameter will be based upon the version of the
           client. There should be no reason to change this parameter from the default.

           Default: acl compatibility = Auto

           Example: acl compatibility = win2k

       acl group control (S)

           In a POSIX filesystem, only the owner of a file or directory and the superuser can
           modify the permissions and ACLs on a file. If this parameter is set, then Samba
           overrides this restriction, and also allows the primary group owner of a file or
           directory to modify the permissions and ACLs on that file.

           On a Windows server, groups may be the owner of a file or directory - thus allowing
           anyone in that group to modify the permissions on it. This allows the delegation of
           security controls on a point in the filesystem to the group owner of a directory and
           anything below it also owned by that group. This means there are multiple people with
           permissions to modify ACLs on a file or directory, easing managability.

           This parameter allows Samba to also permit delegation of the control over a point in
           the exported directory hierarchy in much the same way as Windows. This allows all
           members of a UNIX group to control the permissions on a file or directory they have
           group ownership on.

           This parameter is best used with the inherit owner option and also on on a share
           containing directories with the UNIX setgid bit set on them, which causes new files
           and directories created within it to inherit the group ownership from the containing
           directory.

           This is parameter has been was deprecated in Samba 3.0.23, but re-activated in Samba
           3.0.31 and above, as it now only controls permission changes if the user is in the
           owning primary group. It is now no longer equivalent to the dos filemode option.

           Default: acl group control = no

       acl map full control (S)

           This boolean parameter controls whether smbd(8) maps a POSIX ACE entry of "rwx"
           (read/write/execute), the maximum allowed POSIX permission set, into a Windows ACL of
           "FULL CONTROL". If this parameter is set to true any POSIX ACE entry of "rwx" will be
           returned in a Windows ACL as "FULL CONTROL", is this parameter is set to false any
           POSIX ACE entry of "rwx" will be returned as the specific Windows ACL bits
           representing read, write and execute.

           Default: acl map full control = True

       add group script (G)

           This is the full pathname to a script that will be run AS ROOT by smbd(8) when a new
           group is requested. It will expand any %g to the group name passed. This script is
           only useful for installations using the Windows NT domain administration tools. The
           script is free to create a group with an arbitrary name to circumvent unix group name
           restrictions. In that case the script must print the numeric gid of the created group
           on stdout.

           Default: add group script =

           Example: add group script = /usr/sbin/groupadd %g

       add machine script (G)

           This is the full pathname to a script that will be run by smbd(8) when a machine is
           added to Samba´s domain and a Unix account matching the machine´s name appended with a
           "$" does not already exist.

           This option is very similar to the add user script, and likewise uses the %u
           substitution for the account name. Do not use the %m substitution.

           Default: add machine script =

           Example: add machine script = /usr/sbin/adduser -n -g machines -c Machine -d
           /var/lib/nobody -s /bin/false %u

       add port command (G)

           Samba 3.0.23 introduced support for adding printer ports remotely using the Windows
           "Add Standard TCP/IP Port Wizard". This option defines an external program to be
           executed when smbd receives a request to add a new Port to the system. The script is
           passed two parameters:

           ·   port name

           ·   device URI

       The deviceURI is in the format of socket://<hostname>[:<portnumber>] or
       lpd://<hostname>/<queuename>.

       Default: add port command =

       Example: add port command = /etc/samba/scripts/addport.sh

       addprinter command (G)

           With the introduction of MS-RPC based printing support for Windows NT/2000 clients in
           Samba 2.2, The MS Add Printer Wizard (APW) icon is now also available in the
           "Printers..." folder displayed a share listing. The APW allows for printers to be add
           remotely to a Samba or Windows NT/2000 print server.

           For a Samba host this means that the printer must be physically added to the
           underlying printing system. The addprinter command defines a script to be run which
           will perform the necessary operations for adding the printer to the print system and
           to add the appropriate service definition to the smb.conf file in order that it can be
           shared by smbd(8).

           The addprinter command is automatically invoked with the following parameter (in
           order):

           ·   printer name

           ·   share name

           ·   port name

           ·   driver name

           ·   location

           ·   Windows 9x driver location

       All parameters are filled in from the PRINTER_INFO_2 structure sent by the Windows NT/2000
       client with one exception. The "Windows 9x driver location" parameter is included for
       backwards compatibility only. The remaining fields in the structure are generated from
       answers to the APW questions.

       Once the addprinter command has been executed, smbd will reparse the smb.conf to determine
       if the share defined by the APW exists. If the sharename is still invalid, then smbd will
       return an ACCESS_DENIED error to the client.

       The addprinter command program can output a single line of text, which Samba will set as
       the port the new printer is connected to. If this line isn´t output, Samba won´t reload
       its printer shares.

       Default: addprinter command =

       Example: addprinter command = /usr/bin/addprinter

       add share command (G)

           Samba 2.2.0 introduced the ability to dynamically add and delete shares via the
           Windows NT 4.0 Server Manager. The add share command is used to define an external
           program or script which will add a new service definition to smb.conf.

           In order to successfully execute the add share command, smbd requires that the
           administrator connects using a root account (i.e. uid == 0) or has the
           SeDiskOperatorPrivilege. Scripts defined in the add share command parameter are
           executed as root.

           When executed, smbd will automatically invoke the add share command with five
           parameters.

           ·   configFile - the location of the global smb.conf file.

           ·   shareName - the name of the new share.

           ·   pathName - path to an **existing** directory on disk.

           ·   comment - comment string to associate with the new share.

           ·   max connections Number of maximum simultaneous connections to this share.

       This parameter is only used to add file shares. To add printer shares, see the addprinter
       command.

       Default: add share command =

       Example: add share command = /usr/local/bin/addshare

       add user script (G)

           This is the full pathname to a script that will be run AS ROOT by smbd(8) under
           special circumstances described below.

           Normally, a Samba server requires that UNIX users are created for all users accessing
           files on this server. For sites that use Windows NT account databases as their primary
           user database creating these users and keeping the user list in sync with the Windows
           NT PDC is an onerous task. This option allows smbd to create the required UNIX users
           ON DEMAND when a user accesses the Samba server.

           In order to use this option, smbd(8) must NOT be set to security = share and add user
           script must be set to a full pathname for a script that will create a UNIX user given
           one argument of %u, which expands into the UNIX user name to create.

           When the Windows user attempts to access the Samba server, at login (session setup in
           the SMB protocol) time, smbd(8) contacts the password server and attempts to
           authenticate the given user with the given password. If the authentication succeeds
           then smbd attempts to find a UNIX user in the UNIX password database to map the
           Windows user into. If this lookup fails, and add user script is set then smbd will
           call the specified script AS ROOT, expanding any %u argument to be the user name to
           create.

           If this script successfully creates the user then smbd will continue on as though the
           UNIX user already existed. In this way, UNIX users are dynamically created to match
           existing Windows NT accounts.

           See also security, password server, delete user script.

           Default: add user script =

           Example: add user script = /usr/local/samba/bin/add_user %u

       add user to group script (G)

           Full path to the script that will be called when a user is added to a group using the
           Windows NT domain administration tools. It will be run by smbd(8) AS ROOT. Any %g will
           be replaced with the group name and any %u will be replaced with the user name.

           Note that the adduser command used in the example below does not support the used
           syntax on all systems.

           Default: add user to group script =

           Example: add user to group script = /usr/sbin/adduser %u %g

       administrative share (S)

           If this parameter is set to yes for a share, then the share will be an administrative
           share. The Administrative Shares are the default network shares created by all Windows
           NT-based operating systems. These are shares like C$, D$ or ADMIN$. The type of these
           shares is STYPE_DISKTREE_HIDDEN.

           See the section below on security for more information about this option.

           Default: administrative share = no

       admin users (S)

           This is a list of users who will be granted administrative privileges on the share.
           This means that they will do all file operations as the super-user (root).

           You should use this option very carefully, as any user in this list will be able to do
           anything they like on the share, irrespective of file permissions.

           This parameter will not work with the security = share in Samba 3.0. This is by
           design.

           Default: admin users =

           Example: admin users = jason

       afs share (S)

           This parameter controls whether special AFS features are enabled for this share. If
           enabled, it assumes that the directory exported via the path parameter is a local AFS
           import. The special AFS features include the attempt to hand-craft an AFS token if you
           enabled --with-fake-kaserver in configure.

           Default: afs share = no

       afs username map (G)

           If you are using the fake kaserver AFS feature, you might want to hand-craft the
           usernames you are creating tokens for. For example this is necessary if you have users
           from several domain in your AFS Protection Database. One possible scheme to code users
           as DOMAIN+User as it is done by winbind with the + as a separator.

           The mapped user name must contain the cell name to log into, so without setting this
           parameter there will be no token.

           Default: afs username map =

           Example: afs username map = %u@afs.samba.org

       aio read size (S)

           If Samba has been built with asynchronous I/O support and this integer parameter is
           set to non-zero value, Samba will read from file asynchronously when size of request
           is bigger than this value. Note that it happens only for non-chained and non-chaining
           reads and when not using write cache.

           Current implementation of asynchronous I/O in Samba 3.0 does support only up to 10
           outstanding asynchronous requests, read and write combined.

           Related command: write cache size

           Related command: aio write size

           Default: aio read size = 0

           Example: aio read size = 16384 # Use asynchronous I/O for reads bigger than 16KB
           request size

       aio write behind (S)

           If Samba has been built with asynchronous I/O support, Samba will not wait until write
           requests are finished before returning the result to the client for files listed in
           this parameter. Instead, Samba will immediately return that the write request has been
           finished successfully, no matter if the operation will succeed or not. This might
           speed up clients without aio support, but is really dangerous, because data could be
           lost and files could be damaged.

           The syntax is identical to the veto files parameter.

           Default: aio write behind =

           Example: aio write behind = /*.tmp/

       aio write size (S)

           If Samba has been built with asynchronous I/O support and this integer parameter is
           set to non-zero value, Samba will write to file asynchronously when size of request is
           bigger than this value. Note that it happens only for non-chained and non-chaining
           reads and when not using write cache.

           Current implementation of asynchronous I/O in Samba 3.0 does support only up to 10
           outstanding asynchronous requests, read and write combined.

           Related command: write cache size

           Related command: aio read size

           Default: aio write size = 0

           Example: aio write size = 16384 # Use asynchronous I/O for writes bigger than 16KB
           request size

       algorithmic rid base (G)

           This determines how Samba will use its algorithmic mapping from uids/gid to the RIDs
           needed to construct NT Security Identifiers.

           Setting this option to a larger value could be useful to sites transitioning from
           WinNT and Win2k, as existing user and group rids would otherwise clash with sytem
           users etc.

           All UIDs and GIDs must be able to be resolved into SIDs for the correct operation of
           ACLs on the server. As such the algorithmic mapping can´t be ´turned off´, but pushing
           it ´out of the way´ should resolve the issues. Users and groups can then be assigned
           ´low´ RIDs in arbitrary-rid supporting backends.

           Default: algorithmic rid base = 1000

           Example: algorithmic rid base = 100000

       allocation roundup size (S)

           This parameter allows an administrator to tune the allocation size reported to Windows
           clients. The default size of 1Mb generally results in improved Windows client
           performance. However, rounding the allocation size may cause difficulties for some
           applications, e.g. MS Visual Studio. If the MS Visual Studio compiler starts to crash
           with an internal error, set this parameter to zero for this share.

           The integer parameter specifies the roundup size in bytes.

           Default: allocation roundup size = 1048576

           Example: allocation roundup size = 0 # (to disable roundups)

       allow insecure wide links (G)

           In normal operation the option wide links which allows the server to follow symlinks
           outside of a share path is automatically disabled when unix extensions are enabled on
           a Samba server. This is done for security purposes to prevent UNIX clients creating
           symlinks to areas of the server file system that the administrator does not wish to
           export.

           Setting allow insecure wide links to true disables the link between these two
           parameters, removing this protection and allowing a site to configure the server to
           follow symlinks (by setting wide links to "true") even when unix extensions is turned
           on.

           If is not recommended to enable this option unless you fully understand the
           implications of allowing the server to follow symbolic links created by UNIX clients.
           For most normal Samba configurations this would be considered a security hole and
           setting this parameter is not recommended.

           This option was added at the request of sites who had deliberately set Samba up in
           this way and needed to continue supporting this functionality without having to patch
           the Samba code.

           Default: allow insecure wide links = no

       allow trusted domains (G)

           This option only takes effect when the security option is set to server, domain or
           ads. If it is set to no, then attempts to connect to a resource from a domain or
           workgroup other than the one which smbd is running in will fail, even if that domain
           is trusted by the remote server doing the authentication.

           This is useful if you only want your Samba server to serve resources to users in the
           domain it is a member of. As an example, suppose that there are two domains DOMA and
           DOMB. DOMB is trusted by DOMA, which contains the Samba server. Under normal
           circumstances, a user with an account in DOMB can then access the resources of a UNIX
           account with the same account name on the Samba server even if they do not have an
           account in DOMA. This can make implementing a security boundary difficult.

           Default: allow trusted domains = yes

       announce as (G)

           This specifies what type of server nmbd(8) will announce itself as, to a network
           neighborhood browse list. By default this is set to Windows NT. The valid options are
           : "NT Server" (which can also be written as "NT"), "NT Workstation", "Win95" or "WfW"
           meaning Windows NT Server, Windows NT Workstation, Windows 95 and Windows for
           Workgroups respectively. Do not change this parameter unless you have a specific need
           to stop Samba appearing as an NT server as this may prevent Samba servers from
           participating as browser servers correctly.

           Default: announce as = NT Server

           Example: announce as = Win95

       announce version (G)

           This specifies the major and minor version numbers that nmbd will use when announcing
           itself as a server. The default is 4.9. Do not change this parameter unless you have a
           specific need to set a Samba server to be a downlevel server.

           Default: announce version = 4.9

           Example: announce version = 2.0

       async smb echo handler (G)

           This parameter specifies whether Samba should fork the async smb echo handler. It can
           be beneficial if your file system can block syscalls for a very long time. In some
           circumstances, it prolongs the timeout that Windows uses to determine whether a
           connection is dead.

           Default: async smb echo handler = no

       auth methods (G)

           This option allows the administrator to chose what authentication methods smbd will
           use when authenticating a user. This option defaults to sensible values based on
           security. This should be considered a developer option and used only in rare
           circumstances. In the majority (if not all) of production servers, the default setting
           should be adequate.

           Each entry in the list attempts to authenticate the user in turn, until the user
           authenticates. In practice only one method will ever actually be able to complete the
           authentication.

           Possible options include guest (anonymous access), sam (lookups in local list of
           accounts based on netbios name or domain name), winbind (relay authentication requests
           for remote users through winbindd), ntdomain (pre-winbindd method of authentication
           for remote domain users; deprecated in favour of winbind method), trustdomain
           (authenticate trusted users by contacting the remote DC directly from smbd; deprecated
           in favour of winbind method).

           Default: auth methods =

           Example: auth methods = guest sam winbind

       available (S)

           This parameter lets you "turn off" a service. If available = no, then ALL attempts to
           connect to the service will fail. Such failures are logged.

           Default: available = yes

       bind interfaces only (G)

           This global parameter allows the Samba admin to limit what interfaces on a machine
           will serve SMB requests. It affects file service smbd(8) and name service nmbd(8) in a
           slightly different ways.

           For name service it causes nmbd to bind to ports 137 and 138 on the interfaces listed
           in the interfaces parameter.  nmbd also binds to the "all addresses" interface
           (0.0.0.0) on ports 137 and 138 for the purposes of reading broadcast messages. If this
           option is not set then nmbd will service name requests on all of these sockets. If
           bind interfaces only is set then nmbd will check the source address of any packets
           coming in on the broadcast sockets and discard any that don´t match the broadcast
           addresses of the interfaces in the interfaces parameter list. As unicast packets are
           received on the other sockets it allows nmbd to refuse to serve names to machines that
           send packets that arrive through any interfaces not listed in the interfaces list. IP
           Source address spoofing does defeat this simple check, however, so it must not be used
           seriously as a security feature for nmbd.

           For file service it causes smbd(8) to bind only to the interface list given in the
           interfaces parameter. This restricts the networks that smbd will serve, to packets
           coming in on those interfaces. Note that you should not use this parameter for
           machines that are serving PPP or other intermittent or non-broadcast network
           interfaces as it will not cope with non-permanent interfaces.

           If bind interfaces only is set and the network address 127.0.0.1 is not added to the
           interfaces parameter list smbpasswd(8) and swat(8) may not work as expected due to the
           reasons covered below.

           To change a users SMB password, the smbpasswd by default connects to the localhost -
           127.0.0.1 address as an SMB client to issue the password change request. If bind
           interfaces only is set then unless the network address 127.0.0.1 is added to the
           interfaces parameter list then smbpasswd will fail to connect in it´s default mode.
           smbpasswd can be forced to use the primary IP interface of the local host by using its
           smbpasswd(8) -r remote machine parameter, with remote machine set to the IP name of
           the primary interface of the local host.

           The swat status page tries to connect with smbd and nmbd at the address 127.0.0.1 to
           determine if they are running. Not adding 127.0.0.1 will cause smbd and nmbd to always
           show "not running" even if they really are. This can prevent swat from
           starting/stopping/restarting smbd and nmbd.

           Default: bind interfaces only = no

       blocking locks (S)

           This parameter controls the behavior of smbd(8) when given a request by a client to
           obtain a byte range lock on a region of an open file, and the request has a time limit
           associated with it.

           If this parameter is set and the lock range requested cannot be immediately satisfied,
           samba will internally queue the lock request, and periodically attempt to obtain the
           lock until the timeout period expires.

           If this parameter is set to no, then samba will behave as previous versions of Samba
           would and will fail the lock request immediately if the lock range cannot be obtained.

           Default: blocking locks = yes

       block size (S)

           This parameter controls the behavior of smbd(8) when reporting disk free sizes. By
           default, this reports a disk block size of 1024 bytes.

           Changing this parameter may have some effect on the efficiency of client writes, this
           is not yet confirmed. This parameter was added to allow advanced administrators to
           change it (usually to a higher value) and test the effect it has on client write
           performance without re-compiling the code. As this is an experimental option it may be
           removed in a future release.

           Changing this option does not change the disk free reporting size, just the block size
           unit reported to the client.

           Default: block size = 1024

           Example: block size = 4096

       browsable

           This parameter is a synonym for browseable.

       browseable (S)

           This controls whether this share is seen in the list of available shares in a net view
           and in the browse list.

           Default: browseable = yes

       browse list (G)

           This controls whether smbd(8) will serve a browse list to a client doing a
           NetServerEnum call. Normally set to yes. You should never need to change this.

           Default: browse list = yes

       cache directory (G)

           Usually, most of the TDB files are stored in the lock directory. Since Samba 3.4.0, it
           is possible to differentiate between TDB files with persistent data and TDB files with
           non-persistent data using the state directory and the cache directory options.

           This option specifies the directory where TDB files containing non-persistent data
           will be stored.

           Default: cache directory = ${prefix}/var/locks

           Example: cache directory = /var/run/samba/locks/cache

       casesignames

           This parameter is a synonym for case sensitive.

       case sensitive (S)

           See the discussion in the section name mangling.

           Default: case sensitive = no

       change notify (S)

           This parameter specifies whether Samba should reply to a client´s file change notify
           requests.

           You should never need to change this parameter

           Default: change notify = yes

       change share command (G)

           Samba 2.2.0 introduced the ability to dynamically add and delete shares via the
           Windows NT 4.0 Server Manager. The change share command is used to define an external
           program or script which will modify an existing service definition in smb.conf.

           In order to successfully execute the change share command, smbd requires that the
           administrator connects using a root account (i.e. uid == 0) or has the
           SeDiskOperatorPrivilege. Scripts defined in the change share command parameter are
           executed as root.

           When executed, smbd will automatically invoke the change share command with five
           parameters.

           ·   configFile - the location of the global smb.conf file.

           ·   shareName - the name of the new share.

           ·   pathName - path to an **existing** directory on disk.

           ·   comment - comment string to associate with the new share.

           ·   max connections Number of maximum simultaneous connections to this share.

       This parameter is only used to modify existing file share definitions. To modify printer
       shares, use the "Printers..." folder as seen when browsing the Samba host.

       Default: change share command =

       Example: change share command = /usr/local/bin/changeshare

       check password script (G)

           The name of a program that can be used to check password complexity. The password is
           sent to the program´s standard input.

           The program must return 0 on a good password, or any other value if the password is
           bad. In case the password is considered weak (the program does not return 0) the user
           will be notified and the password change will fail.

           Note: In the example directory is a sample program called crackcheck that uses
           cracklib to check the password quality.

           Default: check password script = Disabled

           Example: check password script = /usr/local/sbin/crackcheck

       client lanman auth (G)

           This parameter determines whether or not smbclient(8) and other samba client tools
           will attempt to authenticate itself to servers using the weaker LANMAN password hash.
           If disabled, only server which support NT password hashes (e.g. Windows NT/2000,
           Samba, etc... but not Windows 95/98) will be able to be connected from the Samba
           client.

           The LANMAN encrypted response is easily broken, due to its case-insensitive nature,
           and the choice of algorithm. Clients without Windows 95/98 servers are advised to
           disable this option.

           Disabling this option will also disable the client plaintext auth option.

           Likewise, if the client ntlmv2 auth parameter is enabled, then only NTLMv2 logins will
           be attempted.

           Default: client lanman auth = no

       client ldap sasl wrapping (G)

           The client ldap sasl wrapping defines whether ldap traffic will be signed or signed
           and encrypted (sealed). Possible values are plain, sign and seal.

           The values sign and seal are only available if Samba has been compiled against a
           modern OpenLDAP version (2.3.x or higher).

           This option is needed in the case of Domain Controllers enforcing the usage of signed
           LDAP connections (e.g. Windows 2000 SP3 or higher). LDAP sign and seal can be
           controlled with the registry key "HKLM\System\CurrentControlSet\Services\
           NTDS\Parameters\LDAPServerIntegrity" on the Windows server side.

           Depending on the used KRB5 library (MIT and older Heimdal versions) it is possible
           that the message "integrity only" is not supported. In this case, sign is just an
           alias for seal.

           The default value is plain which is not irritable to KRB5 clock skew errors. That
           implies synchronizing the time with the KDC in the case of using sign or seal.

           Default: client ldap sasl wrapping = plain

       client ntlmv2 auth (G)

           This parameter determines whether or not smbclient(8) will attempt to authenticate
           itself to servers using the NTLMv2 encrypted password response.

           If enabled, only an NTLMv2 and LMv2 response (both much more secure than earlier
           versions) will be sent. Older servers (including NT4 < SP4, Win9x and Samba 2.2) are
           not compatible with NTLMv2 when not in an NTLMv2 supporting domain

           Similarly, if enabled, NTLMv1, client lanman auth and client plaintext auth
           authentication will be disabled. This also disables share-level authentication.

           If disabled, an NTLM response (and possibly a LANMAN response) will be sent by the
           client, depending on the value of client lanman auth.

           Note that Windows Vista and later versions already use NTLMv2 by default, and some
           sites (particularly those following ´best practice´ security polices) only allow
           NTLMv2 responses, and not the weaker LM or NTLM.

           Default: client ntlmv2 auth = yes

       client plaintext auth (G)

           Specifies whether a client should send a plaintext password if the server does not
           support encrypted passwords.

           Default: client plaintext auth = no

       client schannel (G)

           This controls whether the client offers or even demands the use of the netlogon
           schannel.  client schannel = no does not offer the schannel, client schannel = auto
           offers the schannel but does not enforce it, and client schannel = yes denies access
           if the server is not able to speak netlogon schannel.

           Default: client schannel = auto

           Example: client schannel = yes

       client signing (G)

           This controls whether the client is allowed or required to use SMB signing. Possible
           values are auto, mandatory and disabled.

           When set to auto, SMB signing is offered, but not enforced. When set to mandatory, SMB
           signing is required and if set to disabled, SMB signing is not offered either.

           Default: client signing = auto

       client use spnego principal (G)

           This parameter determines whether or not smbclient(8) and other samba components
           acting as a client will attempt to use the server-supplied principal sometimes given
           in the SPNEGO exchange.

           If enabled, Samba can attempt to use Kerberos to contact servers known only by IP
           address. Kerberos relies on names, so ordinarily cannot function in this situation.

           If disabled, Samba will use the name used to look up the server when asking the KDC
           for a ticket. This avoids situations where a server may impersonate another,
           soliciting authentication as one principal while being known on the network as
           another.

           Note that Windows XP SP2 and later versions already follow this behaviour, and Windows
           Vista and later servers no longer supply this ´rfc4178 hint´ principal on the server
           side.

           Default: client use spnego principal = no

       client use spnego (G)

           This variable controls whether Samba clients will try to use Simple and Protected
           NEGOciation (as specified by rfc2478) with supporting servers (including WindowsXP,
           Windows2000 and Samba 3.0) to agree upon an authentication mechanism. This enables
           Kerberos authentication in particular.

           Default: client use spnego = yes

       cluster addresses (G)

           With this parameter you can add additional addresses nmbd will register with a WINS
           server. These addresses are not necessarily present on all nodes simultaneously, but
           they will be registered with the WINS server so that clients can contact any of the
           nodes.

           Default: cluster addresses =

           Example: cluster addresses = 10.0.0.1 10.0.0.2 10.0.0.3

       clustering (G)

           This parameter specifies whether Samba should contact ctdb for accessing its tdb files
           and use ctdb as a backend for its messaging backend.

           Set this parameter to yes only if you have a cluster setup with ctdb running.

           Default: clustering = no

       comment (S)

           This is a text field that is seen next to a share when a client does a queries the
           server, either via the network neighborhood or via net view to list what shares are
           available.

           If you want to set the string that is displayed next to the machine name then see the
           server string parameter.

           Default: comment =  # No comment

           Example: comment = Fred´s Files

       config backend (G)

           This controls the backend for storing the configuration. Possible values are file (the
           default) and registry. When config backend = registry is encountered while loading
           smb.conf, the configuration read so far is dropped and the global options are read
           from registry instead. So this triggers a registry only configuration. Share
           definitions are not read immediately but instead registry shares is set to yes.

           Note: This option can not be set inside the registry configuration itself.

           Default: config backend = file

           Example: config backend = registry

       config file (G)

           This allows you to override the config file to use, instead of the default (usually
           smb.conf). There is a chicken and egg problem here as this option is set in the config
           file!

           For this reason, if the name of the config file has changed when the parameters are
           loaded then it will reload them from the new config file.

           This option takes the usual substitutions, which can be very useful.

           If the config file doesn´t exist then it won´t be loaded (allowing you to special case
           the config files of just a few clients).

           No default

           Example: config file = /usr/local/samba/lib/smb.conf.%m

       copy (S)

           This parameter allows you to "clone" service entries. The specified service is simply
           duplicated under the current service´s name. Any parameters specified in the current
           section will override those in the section being copied.

           This feature lets you set up a ´template´ service and create similar services easily.
           Note that the service being copied must occur earlier in the configuration file than
           the service doing the copying.

           Default: copy =

           Example: copy = otherservice

       create krb5 conf (G)

           Setting this paramter to no prevents winbind from creating custom krb5.conf files.
           Winbind normally does this because the krb5 libraries are not AD-site-aware and thus
           would pick any domain controller out of potentially very many. Winbind is site-aware
           and makes the krb5 libraries use a local DC by creating its own krb5.conf files.

           Preventing winbind from doing this might become necessary if you have to add special
           options into your system-krb5.conf that winbind does not see.

           Default: create krb5 conf = yes

       create mode

           This parameter is a synonym for create mask.

       create mask (S)

           When a file is created, the necessary permissions are calculated according to the
           mapping from DOS modes to UNIX permissions, and the resulting UNIX mode is then
           bit-wise ´AND´ed with this parameter. This parameter may be thought of as a bit-wise
           MASK for the UNIX modes of a file. Any bit not set here will be removed from the modes
           set on a file when it is created.

           The default value of this parameter removes the group and other write and execute bits
           from the UNIX modes.

           Following this Samba will bit-wise ´OR´ the UNIX mode created from this parameter with
           the value of the force create mode parameter which is set to 000 by default.

           This parameter does not affect directory masks. See the parameter directory mask for
           details.

           Note that this parameter does not apply to permissions set by Windows NT/2000 ACL
           editors. If the administrator wishes to enforce a mask on access control lists also,
           they need to set the security mask.

           Default: create mask = 0744

           Example: create mask = 0775

       csc policy (S)

           This stands for client-side caching policy, and specifies how clients capable of
           offline caching will cache the files in the share. The valid values are: manual,
           documents, programs, disable.

           These values correspond to those used on Windows servers.

           For example, shares containing roaming profiles can have offline caching disabled
           using csc policy = disable.

           Default: csc policy = manual

           Example: csc policy = programs

       ctdbd socket (G)

           If you set clustering=yes, you need to tell Samba where ctdbd listens on its unix
           domain socket. The default path as of ctdb 1.0 is /tmp/ctdb.socket which you have to
           explicitly set for Samba in smb.conf.

           Default: ctdbd socket =

           Example: ctdbd socket = /tmp/ctdb.socket

       ctdb locktime warn threshold (G)

           In a cluster environment using Samba and ctdb it is critical that locks on central
           ctdb-hosted databases like locking.tdb are not held for long. With the current Samba
           architecture it happens that Samba takes a lock and while holding that lock makes file
           system calls into the shared cluster file system. This option makes Samba warn if it
           detects that it has held locks for the specified number of milliseconds. If this
           happens, smbd will emit a debug level 0 message into its logs and potentially into
           syslog. The most likely reason for such a log message is that an operation of the
           cluster file system Samba exports is taking longer than expected. The messages are
           meant as a debugging aid for potential cluster problems.

           The default value of 0 disables this logging.

           Default: ctdb locktime warn threshold = 0

       ctdb timeout (G)

           This parameter specifies a timeout in seconds for the connection between Samba and
           ctdb. It is only valid if you have compiled Samba with clustering and if you have set
           clustering=yes.

           When something in the cluster blocks, it can happen that we wait indefinitely long for
           ctdb, just adding to the blocking condition. In a well-running cluster this should
           never happen, but there are too many components in a cluster that might have hickups.
           Choosing the right balance for this value is very tricky, because on a busy cluster
           long service times to transfer something across the cluster might be valid. Setting it
           too short will degrade the service your cluster presents, setting it too long might
           make the cluster itself not recover from something severely broken for too long.

           Be aware that if you set this parameter, this needs to be in the file smb.conf, it is
           not really helpful to put this into a registry configuration (typical on a cluster),
           because to access the registry contact to ctdb is requred.

           Setting ctdb timeout to n makes any process waiting longer than n seconds for a reply
           by the cluster panic. Setting it to 0 (the default) makes Samba block forever, which
           is the highly recommended default.

           Default: ctdb timeout = 0

       cups connection timeout (G)

           This parameter is only applicable if printing is set to cups.

           If set, this option specifies the number of seconds that smbd will wait whilst trying
           to contact to the CUPS server. The connection will fail if it takes longer than this
           number of seconds.

           Default: cups connection timeout = 30

           Example: cups connection timeout = 60

       cups encrypt (G)

           This parameter is only applicable if printing is set to cups and if you use CUPS newer
           than 1.0.x.It is used to define whether or not Samba should use encryption when
           talking to the CUPS server. Possible values are auto, yes and no

           When set to auto we will try to do a TLS handshake on each CUPS connection setup. If
           that fails, we will fall back to unencrypted operation.

           Default: cups encrypt = "no"

       cups options (S)

           This parameter is only applicable if printing is set to cups. Its value is a free form
           string of options passed directly to the cups library.

           You can pass any generic print option known to CUPS (as listed in the CUPS "Software
           Users´ Manual"). You can also pass any printer specific option (as listed in
           "lpoptions -d printername -l") valid for the target queue. Multiple parameters should
           be space-delimited name/value pairs according to the PAPI text option ABNF
           specification. Collection values ("name={a=... b=... c=...}") are stored with the
           curley brackets intact.

           You should set this parameter to raw if your CUPS server error_log file contains
           messages such as "Unsupported format ´application/octet-stream´" when printing from a
           Windows client through Samba. It is no longer necessary to enable system wide raw
           printing in /etc/cups/mime.{convs,types}.

           Default: cups options = ""

           Example: cups options = "raw media=a4"

       cups server (G)

           This parameter is only applicable if printing is set to cups.

           If set, this option overrides the ServerName option in the CUPS client.conf. This is
           necessary if you have virtual samba servers that connect to different CUPS daemons.

           Optionally, a port can be specified by separating the server name and port number with
           a colon. If no port was specified, the default port for IPP (631) will be used.

           Default: cups server = ""

           Example: cups server = mycupsserver

           Example: cups server = mycupsserver:1631

       deadtime (G)

           The value of the parameter (a decimal integer) represents the number of minutes of
           inactivity before a connection is considered dead, and it is disconnected. The
           deadtime only takes effect if the number of open files is zero.

           This is useful to stop a server´s resources being exhausted by a large number of
           inactive connections.

           Most clients have an auto-reconnect feature when a connection is broken so in most
           cases this parameter should be transparent to users.

           Using this parameter with a timeout of a few minutes is recommended for most systems.

           A deadtime of zero indicates that no auto-disconnection should be performed.

           Default: deadtime = 0

           Example: deadtime = 15

       debug class (G)

           With this boolean parameter enabled, the debug class (DBGC_CLASS) will be displayed in
           the debug header.

           For more information about currently available debug classes, see section about log
           level.

           Default: debug class = no

       debug hires timestamp (G)

           Sometimes the timestamps in the log messages are needed with a resolution of higher
           that seconds, this boolean parameter adds microsecond resolution to the timestamp
           message header when turned on.

           Note that the parameter debug timestamp must be on for this to have an effect.

           Default: debug hires timestamp = yes

       debug pid (G)

           When using only one log file for more then one forked smbd(8)-process there may be
           hard to follow which process outputs which message. This boolean parameter is adds the
           process-id to the timestamp message headers in the logfile when turned on.

           Note that the parameter debug timestamp must be on for this to have an effect.

           Default: debug pid = no

       debug prefix timestamp (G)

           With this option enabled, the timestamp message header is prefixed to the debug
           message without the filename and function information that is included with the debug
           timestamp parameter. This gives timestamps to the messages without adding an
           additional line.

           Note that this parameter overrides the debug timestamp parameter.

           Default: debug prefix timestamp = no

       timestamp logs

           This parameter is a synonym for debug timestamp.

       debug timestamp (G)

           Samba debug log messages are timestamped by default. If you are running at a high
           debug level these timestamps can be distracting. This boolean parameter allows
           timestamping to be turned off.

           Default: debug timestamp = yes

       debug uid (G)

           Samba is sometimes run as root and sometime run as the connected user, this boolean
           parameter inserts the current euid, egid, uid and gid to the timestamp message headers
           in the log file if turned on.

           Note that the parameter debug timestamp must be on for this to have an effect.

           Default: debug uid = no

       dedicated keytab file (G)

           Specifies the path to the kerberos keytab file when kerberos method is set to
           "dedicated keytab".

           Default: dedicated keytab file =

           Example: dedicated keytab file = /usr/local/etc/krb5.keytab

       default case (S)

           See the section on name mangling. Also note the short preserve case parameter.

           Default: default case = lower

       default devmode (S)

           This parameter is only applicable to printable services. When smbd is serving Printer
           Drivers to Windows NT/2k/XP clients, each printer on the Samba server has a Device
           Mode which defines things such as paper size and orientation and duplex settings. The
           device mode can only correctly be generated by the printer driver itself (which can
           only be executed on a Win32 platform). Because smbd is unable to execute the driver
           code to generate the device mode, the default behavior is to set this field to NULL.

           Most problems with serving printer drivers to Windows NT/2k/XP clients can be traced
           to a problem with the generated device mode. Certain drivers will do things such as
           crashing the client´s Explorer.exe with a NULL devmode. However, other printer drivers
           can cause the client´s spooler service (spoolsv.exe) to die if the devmode was not
           created by the driver itself (i.e. smbd generates a default devmode).

           This parameter should be used with care and tested with the printer driver in
           question. It is better to leave the device mode to NULL and let the Windows client set
           the correct values. Because drivers do not do this all the time, setting default
           devmode = yes will instruct smbd to generate a default one.

           For more information on Windows NT/2k printing and Device Modes, see the MSDN
           documentation.

           Default: default devmode = yes

       default

           This parameter is a synonym for default service.

       default service (G)

           This parameter specifies the name of a service which will be connected to if the
           service actually requested cannot be found. Note that the square brackets are NOT
           given in the parameter value (see example below).

           There is no default value for this parameter. If this parameter is not given,
           attempting to connect to a nonexistent service results in an error.

           Typically the default service would be a guest ok, read-only service.

           Also note that the apparent service name will be changed to equal that of the
           requested service, this is very useful as it allows you to use macros like %S to make
           a wildcard service.

           Note also that any "_" characters in the name of the service used in the default
           service will get mapped to a "/". This allows for interesting things.

           Default: default service =

           Example: default service = pub

       defer sharing violations (G)

           Windows allows specifying how a file will be shared with other processes when it is
           opened. Sharing violations occur when a file is opened by a different process using
           options that violate the share settings specified by other processes. This parameter
           causes smbd to act as a Windows server does, and defer returning a "sharing violation"
           error message for up to one second, allowing the client to close the file causing the
           violation in the meantime.

           UNIX by default does not have this behaviour.

           There should be no reason to turn off this parameter, as it is designed to enable
           Samba to more correctly emulate Windows.

           Default: defer sharing violations = True

       delete group script (G)

           This is the full pathname to a script that will be run AS ROOT smbd(8) when a group is
           requested to be deleted. It will expand any %g to the group name passed. This script
           is only useful for installations using the Windows NT domain administration tools.

           Default: delete group script =

       deleteprinter command (G)

           With the introduction of MS-RPC based printer support for Windows NT/2000 clients in
           Samba 2.2, it is now possible to delete a printer at run time by issuing the
           DeletePrinter() RPC call.

           For a Samba host this means that the printer must be physically deleted from the
           underlying printing system. The deleteprinter command defines a script to be run which
           will perform the necessary operations for removing the printer from the print system
           and from smb.conf.

           The deleteprinter command is automatically called with only one parameter: printer
           name.

           Once the deleteprinter command has been executed, smbd will reparse the smb.conf to
           check that the associated printer no longer exists. If the sharename is still valid,
           then smbd will return an ACCESS_DENIED error to the client.

           Default: deleteprinter command =

           Example: deleteprinter command = /usr/bin/removeprinter

       delete readonly (S)

           This parameter allows readonly files to be deleted. This is not normal DOS semantics,
           but is allowed by UNIX.

           This option may be useful for running applications such as rcs, where UNIX file
           ownership prevents changing file permissions, and DOS semantics prevent deletion of a
           read only file.

           Default: delete readonly = no

       delete share command (G)

           Samba 2.2.0 introduced the ability to dynamically add and delete shares via the
           Windows NT 4.0 Server Manager. The delete share command is used to define an external
           program or script which will remove an existing service definition from smb.conf.

           In order to successfully execute the delete share command, smbd requires that the
           administrator connects using a root account (i.e. uid == 0) or has the
           SeDiskOperatorPrivilege. Scripts defined in the delete share command parameter are
           executed as root.

           When executed, smbd will automatically invoke the delete share command with two
           parameters.

           ·   configFile - the location of the global smb.conf file.

           ·   shareName - the name of the existing service.

       This parameter is only used to remove file shares. To delete printer shares, see the
       deleteprinter command.

       Default: delete share command =

       Example: delete share command = /usr/local/bin/delshare

       delete user from group script (G)

           Full path to the script that will be called when a user is removed from a group using
           the Windows NT domain administration tools. It will be run by smbd(8) AS ROOT. Any %g
           will be replaced with the group name and any %u will be replaced with the user name.

           Default: delete user from group script =

           Example: delete user from group script = /usr/sbin/deluser %u %g

       delete user script (G)

           This is the full pathname to a script that will be run by smbd(8) when managing users
           with remote RPC (NT) tools.

           This script is called when a remote client removes a user from the server, normally
           using ´User Manager for Domains´ or rpcclient.

           This script should delete the given UNIX username.

           Default: delete user script =

           Example: delete user script = /usr/local/samba/bin/del_user %u

       delete veto files (S)

           This option is used when Samba is attempting to delete a directory that contains one
           or more vetoed directories (see the veto files option). If this option is set to no
           (the default) then if a vetoed directory contains any non-vetoed files or directories
           then the directory delete will fail. This is usually what you want.

           If this option is set to yes, then Samba will attempt to recursively delete any files
           and directories within the vetoed directory. This can be useful for integration with
           file serving systems such as NetAtalk which create meta-files within directories you
           might normally veto DOS/Windows users from seeing (e.g.  .AppleDouble)

           Setting delete veto files = yes allows these directories to be transparently deleted
           when the parent directory is deleted (so long as the user has permissions to do so).

           Default: delete veto files = no

       dfree cache time (S)

           The dfree cache time should only be used on systems where a problem occurs with the
           internal disk space calculations. This has been known to happen with Ultrix, but may
           occur with other operating systems. The symptom that was seen was an error of "Abort
           Retry Ignore" at the end of each directory listing.

           This is a new parameter introduced in Samba version 3.0.21. It specifies in seconds
           the time that smbd will cache the output of a disk free query. If set to zero (the
           default) no caching is done. This allows a heavily loaded server to prevent rapid
           spawning of dfree command scripts increasing the load.

           By default this parameter is zero, meaning no caching will be done.

           No default

           Example: dfree cache time = dfree cache time = 60

       dfree command (S)

           The dfree command setting should only be used on systems where a problem occurs with
           the internal disk space calculations. This has been known to happen with Ultrix, but
           may occur with other operating systems. The symptom that was seen was an error of
           "Abort Retry Ignore" at the end of each directory listing.

           This setting allows the replacement of the internal routines to calculate the total
           disk space and amount available with an external routine. The example below gives a
           possible script that might fulfill this function.

           In Samba version 3.0.21 this parameter has been changed to be a per-share parameter,
           and in addition the parameter dfree cache time was added to allow the output of this
           script to be cached for systems under heavy load.

           The external program will be passed a single parameter indicating a directory in the
           filesystem being queried. This will typically consist of the string ./. The script
           should return two integers in ASCII. The first should be the total disk space in
           blocks, and the second should be the number of available blocks. An optional third
           return value can give the block size in bytes. The default blocksize is 1024 bytes.

           Note: Your script should NOT be setuid or setgid and should be owned by (and writeable
           only by) root!

           Where the script dfree (which must be made executable) could be:

               #!/bin/sh
               df $1 | tail -1 | awk ´{print $(NF-4),$(NF-2)}´

           or perhaps (on Sys V based systems):

               #!/bin/sh
               /usr/bin/df -k $1 | tail -1 | awk ´{print $3" "$5}´

           Note that you may have to replace the command names with full path names on some
           systems.

           By default internal routines for determining the disk capacity and remaining space
           will be used.

           No default

           Example: dfree command = /usr/local/samba/bin/dfree

       directory mode

           This parameter is a synonym for directory mask.

       directory mask (S)

           This parameter is the octal modes which are used when converting DOS modes to UNIX
           modes when creating UNIX directories.

           When a directory is created, the necessary permissions are calculated according to the
           mapping from DOS modes to UNIX permissions, and the resulting UNIX mode is then
           bit-wise ´AND´ed with this parameter. This parameter may be thought of as a bit-wise
           MASK for the UNIX modes of a directory. Any bit not set here will be removed from the
           modes set on a directory when it is created.

           The default value of this parameter removes the ´group´ and ´other´ write bits from
           the UNIX mode, allowing only the user who owns the directory to modify it.

           Following this Samba will bit-wise ´OR´ the UNIX mode created from this parameter with
           the value of the force directory mode parameter. This parameter is set to 000 by
           default (i.e. no extra mode bits are added).

           Note that this parameter does not apply to permissions set by Windows NT/2000 ACL
           editors. If the administrator wishes to enforce a mask on access control lists also,
           they need to set the directory security mask.

           Default: directory mask = 0755

           Example: directory mask = 0775

       directory name cache size (S)

           This parameter specifies the the size of the directory name cache. It will be needed
           to turn this off for *BSD systems.

           Default: directory name cache size = 100

       directory security mask (S)

           This parameter controls what UNIX permission bits will be set when a Windows NT client
           is manipulating the UNIX permission on a directory using the native NT security dialog
           box.

           This parameter is applied as a mask (AND´ed with) to the incoming permission bits,
           thus resetting any bits not in this mask. Make sure not to mix up this parameter with
           force directory security mode, which works similar like this one but uses logical OR
           instead of AND. Essentially, zero bits in this mask are a set of bits that will always
           be set to zero.

           Essentially, all bits set to zero in this mask will result in setting to zero the
           corresponding bits on the file permissions regardless of the previous status of this
           bits on the file.

           If not set explicitly this parameter is set to 0777 meaning a user is allowed to set
           all the user/group/world permissions on a directory.

           Note that users who can access the Samba server through other means can easily bypass
           this restriction, so it is primarily useful for standalone "appliance" systems.
           Administrators of most normal systems will probably want to leave it as the default of
           0777.

           Default: directory security mask = 0777

           Example: directory security mask = 0700

       disable netbios (G)

           Enabling this parameter will disable netbios support in Samba. Netbios is the only
           available form of browsing in all windows versions except for 2000 and XP.

               Note
               Clients that only support netbios won´t be able to see your samba server when
               netbios support is disabled.
           Default: disable netbios = no

       disable spoolss (G)

           Enabling this parameter will disable Samba´s support for the SPOOLSS set of MS-RPC´s
           and will yield identical behavior as Samba 2.0.x. Windows NT/2000 clients will
           downgrade to using Lanman style printing commands. Windows 9x/ME will be unaffected by
           the parameter. However, this will also disable the ability to upload printer drivers
           to a Samba server via the Windows NT Add Printer Wizard or by using the NT printer
           properties dialog window. It will also disable the capability of Windows NT/2000
           clients to download print drivers from the Samba host upon demand.  Be very careful
           about enabling this parameter.

           Default: disable spoolss = no

       display charset (G)

           Specifies the charset that samba will use to print messages to stdout and stderr. The
           default value is "LOCALE", which means automatically set, depending on the current
           locale. The value should generally be the same as the value of the parameter unix
           charset.

           Default: display charset = "LOCALE" or "ASCII" (depending on the system)

           Example: display charset = UTF8

       dmapi support (S)

           This parameter specifies whether Samba should use DMAPI to determine whether a file is
           offline or not. This would typically be used in conjunction with a hierarchical
           storage system that automatically migrates files to tape.

           Note that Samba infers the status of a file by examining the events that a DMAPI
           application has registered interest in. This heuristic is satisfactory for a number of
           hierarchical storage systems, but there may be system for which it will fail. In this
           case, Samba may erroneously report files to be offline.

           This parameter is only available if a supported DMAPI implementation was found at
           compilation time. It will only be used if DMAPI is found to enabled on the system at
           run time.

           Default: dmapi support = no

       dns proxy (G)

           Specifies that nmbd(8) when acting as a WINS server and finding that a NetBIOS name
           has not been registered, should treat the NetBIOS name word-for-word as a DNS name and
           do a lookup with the DNS server for that name on behalf of the name-querying client.

           Note that the maximum length for a NetBIOS name is 15 characters, so the DNS name (or
           DNS alias) can likewise only be 15 characters, maximum.

           nmbd spawns a second copy of itself to do the DNS name lookup requests, as doing a
           name lookup is a blocking action.

           Default: dns proxy = yes

       domain logons (G)

           If set to yes, the Samba server will provide the netlogon service for Windows 9X
           network logons for the workgroup it is in. This will also cause the Samba server to
           act as a domain controller for NT4 style domain services. For more details on setting
           up this feature see the Domain Control chapter of the Samba HOWTO Collection.

           Default: domain logons = no

       domain master (G)

           Tell smbd(8) to enable WAN-wide browse list collation. Setting this option causes nmbd
           to claim a special domain specific NetBIOS name that identifies it as a domain master
           browser for its given workgroup. Local master browsers in the same workgroup on
           broadcast-isolated subnets will give this nmbd their local browse lists, and then ask
           smbd(8) for a complete copy of the browse list for the whole wide area network.
           Browser clients will then contact their local master browser, and will receive the
           domain-wide browse list, instead of just the list for their broadcast-isolated subnet.

           Note that Windows NT Primary Domain Controllers expect to be able to claim this
           workgroup specific special NetBIOS name that identifies them as domain master browsers
           for that workgroup by default (i.e. there is no way to prevent a Windows NT PDC from
           attempting to do this). This means that if this parameter is set and nmbd claims the
           special name for a workgroup before a Windows NT PDC is able to do so then cross
           subnet browsing will behave strangely and may fail.

           If domain logons = yes, then the default behavior is to enable the domain master
           parameter. If domain logons is not enabled (the default setting), then neither will
           domain master be enabled by default.

           When domain logons = Yes the default setting for this parameter is Yes, with the
           result that Samba will be a PDC. If domain master = No, Samba will function as a BDC.
           In general, this parameter should be set to ´No´ only on a BDC.

           Default: domain master = auto

       dont descend (S)

           There are certain directories on some systems (e.g., the /proc tree under Linux) that
           are either not of interest to clients or are infinitely deep (recursive). This
           parameter allows you to specify a comma-delimited list of directories that the server
           should always show as empty.

           Note that Samba can be very fussy about the exact format of the "dont descend"
           entries. For example you may need ./proc instead of just /proc. Experimentation is the
           best policy :-)

           Default: dont descend =

           Example: dont descend = /proc,/dev

       dos charset (G)

           DOS SMB clients assume the server has the same charset as they do. This option
           specifies which charset Samba should talk to DOS clients.

           The default depends on which charsets you have installed. Samba tries to use charset
           850 but falls back to ASCII in case it is not available. Run testparm(1) to check the
           default on your system.

           No default

       dos filemode (S)

           The default behavior in Samba is to provide UNIX-like behavior where only the owner of
           a file/directory is able to change the permissions on it. However, this behavior is
           often confusing to DOS/Windows users. Enabling this parameter allows a user who has
           write access to the file (by whatever means, including an ACL permission) to modify
           the permissions (including ACL) on it. Note that a user belonging to the group owning
           the file will not be allowed to change permissions if the group is only granted read
           access. Ownership of the file/directory may also be changed. Note that using the VFS
           modules acl_xattr or acl_tdb which store native Windows as meta-data will
           automatically turn this option on for any share for which they are loaded, as they
           require this option to emulate Windows ACLs correctly.

           Default: dos filemode = no

       dos filetime resolution (S)

           Under the DOS and Windows FAT filesystem, the finest granularity on time resolution is
           two seconds. Setting this parameter for a share causes Samba to round the reported
           time down to the nearest two second boundary when a query call that requires one
           second resolution is made to smbd(8).

           This option is mainly used as a compatibility option for Visual C++ when used against
           Samba shares. If oplocks are enabled on a share, Visual C++ uses two different time
           reading calls to check if a file has changed since it was last read. One of these
           calls uses a one-second granularity, the other uses a two second granularity. As the
           two second call rounds any odd second down, then if the file has a timestamp of an odd
           number of seconds then the two timestamps will not match and Visual C++ will keep
           reporting the file has changed. Setting this option causes the two timestamps to
           match, and Visual C++ is happy.

           Default: dos filetime resolution = no

       dos filetimes (S)

           Under DOS and Windows, if a user can write to a file they can change the timestamp on
           it. Under POSIX semantics, only the owner of the file or root may change the
           timestamp. By default, Samba emulates the DOS semantics and allows to change the
           timestamp on a file if the user smbd is acting on behalf has write permissions. Due to
           changes in Microsoft Office 2000 and beyond, the default for this parameter has been
           changed from "no" to "yes" in Samba 3.0.14 and above. Microsoft Excel will display
           dialog box warnings about the file being changed by another user if this parameter is
           not set to "yes" and files are being shared between users.

           Default: dos filetimes = yes

       ea support (S)

           This boolean parameter controls whether smbd(8) will allow clients to attempt to store
           OS/2 style Extended attributes on a share. In order to enable this parameter the
           underlying filesystem exported by the share must support extended attributes (such as
           provided on XFS and EXT3 on Linux, with the correct kernel patches). On Linux the
           filesystem must have been mounted with the mount option user_xattr in order for
           extended attributes to work, also extended attributes must be compiled into the Linux
           kernel.

           Default: ea support = no

       enable asu support (G)

           Hosts running the "Advanced Server for Unix (ASU)" product require some special
           accomodations such as creating a builtin [ADMIN$] share that only supports IPC
           connections. The has been the default behavior in smbd for many years. However,
           certain Microsoft applications such as the Print Migrator tool require that the remote
           server support an [ADMIN$} file share. Disabling this parameter allows for creating an
           [ADMIN$] file share in smb.conf.

           Default: enable asu support = no

       enable core files (G)

           This parameter specifies whether core dumps should be written on internal exits.
           Normally set to yes. You should never need to change this.

           Default: enable core files = yes

           Example: enable core files = no

       enable privileges (G)

           This deprecated parameter controls whether or not smbd will honor privileges assigned
           to specific SIDs via either net rpc rights or one of the Windows user and group
           manager tools. This parameter is enabled by default. It can be disabled to prevent
           members of the Domain Admins group from being able to assign privileges to users or
           groups which can then result in certain smbd operations running as root that would
           normally run under the context of the connected user.

           An example of how privileges can be used is to assign the right to join clients to a
           Samba controlled domain without providing root access to the server via smbd.

           Please read the extended description provided in the Samba HOWTO documentation.

           Default: enable privileges = yes

       enable spoolss (G)

           Inverted synonym for disable spoolss.

           Default: enable spoolss = yes

       encrypt passwords (G)

           This boolean controls whether encrypted passwords will be negotiated with the client.
           Note that Windows NT 4.0 SP3 and above and also Windows 98 will by default expect
           encrypted passwords unless a registry entry is changed. To use encrypted passwords in
           Samba see the chapter "User Database" in the Samba HOWTO Collection.

           MS Windows clients that expect Microsoft encrypted passwords and that do not have
           plain text password support enabled will be able to connect only to a Samba server
           that has encrypted password support enabled and for which the user accounts have a
           valid encrypted password. Refer to the smbpasswd command man page for information
           regarding the creation of encrypted passwords for user accounts.

           The use of plain text passwords is NOT advised as support for this feature is no
           longer maintained in Microsoft Windows products. If you want to use plain text
           passwords you must set this parameter to no.

           In order for encrypted passwords to work correctly smbd(8) must either have access to
           a local smbpasswd(5) file (see the smbpasswd(8) program for information on how to set
           up and maintain this file), or set the security = [server|domain|ads] parameter which
           causes smbd to authenticate against another server.

           Default: encrypt passwords = yes

       enhanced browsing (G)

           This option enables a couple of enhancements to cross-subnet browse propagation that
           have been added in Samba but which are not standard in Microsoft implementations.

           The first enhancement to browse propagation consists of a regular wildcard query to a
           Samba WINS server for all Domain Master Browsers, followed by a browse synchronization
           with each of the returned DMBs. The second enhancement consists of a regular
           randomised browse synchronization with all currently known DMBs.

           You may wish to disable this option if you have a problem with empty workgroups not
           disappearing from browse lists. Due to the restrictions of the browse protocols, these
           enhancements can cause a empty workgroup to stay around forever which can be annoying.

           In general you should leave this option enabled as it makes cross-subnet browse
           propagation much more reliable.

           Default: enhanced browsing = yes

       enumports command (G)

           The concept of a "port" is fairly foreign to UNIX hosts. Under Windows NT/2000 print
           servers, a port is associated with a port monitor and generally takes the form of a
           local port (i.e. LPT1:, COM1:, FILE:) or a remote port (i.e. LPD Port Monitor,
           etc...). By default, Samba has only one port defined--"Samba Printer Port". Under
           Windows NT/2000, all printers must have a valid port name. If you wish to have a list
           of ports displayed (smbd does not use a port name for anything) other than the default
           "Samba Printer Port", you can define enumports command to point to a program which
           should generate a list of ports, one per line, to standard output. This listing will
           then be used in response to the level 1 and 2 EnumPorts() RPC.

           Default: enumports command =

           Example: enumports command = /usr/bin/listports

       eventlog list (G)

           This option defines a list of log names that Samba will report to the Microsoft
           EventViewer utility. The listed eventlogs will be associated with tdb file on disk in
           the $(lockdir)/eventlog.

           The administrator must use an external process to parse the normal Unix logs such as
           /var/log/messages and write then entries to the eventlog tdb files. Refer to the
           eventlogadm(8) utility for how to write eventlog entries.

           Default: eventlog list =

           Example: eventlog list = Security Application Syslog Apache

       fake directory create times (S)

           NTFS and Windows VFAT file systems keep a create time for all files and directories.
           This is not the same as the ctime - status change time - that Unix keeps, so Samba by
           default reports the earliest of the various times Unix does keep. Setting this
           parameter for a share causes Samba to always report midnight 1-1-1980 as the create
           time for directories.

           This option is mainly used as a compatibility option for Visual C++ when used against
           Samba shares. Visual C++ generated makefiles have the object directory as a dependency
           for each object file, and a make rule to create the directory. Also, when NMAKE
           compares timestamps it uses the creation time when examining a directory. Thus the
           object directory will be created if it does not exist, but once it does exist it will
           always have an earlier timestamp than the object files it contains.

           However, Unix time semantics mean that the create time reported by Samba will be
           updated whenever a file is created or or deleted in the directory. NMAKE finds all
           object files in the object directory. The timestamp of the last one built is then
           compared to the timestamp of the object directory. If the directory´s timestamp if
           newer, then all object files will be rebuilt. Enabling this option ensures directories
           always predate their contents and an NMAKE build will proceed as expected.

           Default: fake directory create times = no

       fake oplocks (S)

           Oplocks are the way that SMB clients get permission from a server to locally cache
           file operations. If a server grants an oplock (opportunistic lock) then the client is
           free to assume that it is the only one accessing the file and it will aggressively
           cache file data. With some oplock types the client may even cache file open/close
           operations. This can give enormous performance benefits.

           When you set fake oplocks = yes, smbd(8) will always grant oplock requests no matter
           how many clients are using the file.

           It is generally much better to use the real oplocks support rather than this
           parameter.

           If you enable this option on all read-only shares or shares that you know will only be
           accessed from one client at a time such as physically read-only media like CDROMs, you
           will see a big performance improvement on many operations. If you enable this option
           on shares where multiple clients may be accessing the files read-write at the same
           time you can get data corruption. Use this option carefully!

           Default: fake oplocks = no

       follow symlinks (S)

           This parameter allows the Samba administrator to stop smbd(8) from following symbolic
           links in a particular share. Setting this parameter to no prevents any file or
           directory that is a symbolic link from being followed (the user will get an error).
           This option is very useful to stop users from adding a symbolic link to /etc/passwd in
           their home directory for instance. However it will slow filename lookups down
           slightly.

           This option is enabled (i.e.  smbd will follow symbolic links) by default.

           Default: follow symlinks = yes

       force create mode (S)

           This parameter specifies a set of UNIX mode bit permissions that will always be set on
           a file created by Samba. This is done by bitwise ´OR´ing these bits onto the mode bits
           of a file that is being created. The default for this parameter is (in octal) 000. The
           modes in this parameter are bitwise ´OR´ed onto the file mode after the mask set in
           the create mask parameter is applied.

           The example below would force all newly created files to have read and execute
           permissions set for ´group´ and ´other´ as well as the read/write/execute bits set for
           the ´user´.

           Default: force create mode = 000

           Example: force create mode = 0755

       force directory mode (S)

           This parameter specifies a set of UNIX mode bit permissions that will always be set on
           a directory created by Samba. This is done by bitwise ´OR´ing these bits onto the mode
           bits of a directory that is being created. The default for this parameter is (in
           octal) 0000 which will not add any extra permission bits to a created directory. This
           operation is done after the mode mask in the parameter directory mask is applied.

           The example below would force all created directories to have read and execute
           permissions set for ´group´ and ´other´ as well as the read/write/execute bits set for
           the ´user´.

           Default: force directory mode = 000

           Example: force directory mode = 0755

       force directory security mode (S)

           This parameter controls what UNIX permission bits can be modified when a Windows NT
           client is manipulating the UNIX permission on a directory using the native NT security
           dialog box.

           This parameter is applied as a mask (OR´ed with) to the changed permission bits, thus
           forcing any bits in this mask that the user may have modified to be on. Make sure not
           to mix up this parameter with directory security mask, which works in a similar manner
           to this one, but uses a logical AND instead of an OR.

           Essentially, this mask may be treated as a set of bits that, when modifying security
           on a directory, to will enable (1) any flags that are off (0) but which the mask has
           set to on (1).

           If not set explicitly this parameter is 0000, which allows a user to modify all the
           user/group/world permissions on a directory without restrictions.

               Note
               Users who can access the Samba server through other means can easily bypass this
               restriction, so it is primarily useful for standalone "appliance" systems.
               Administrators of most normal systems will probably want to leave it set as 0000.
           Default: force directory security mode = 0

           Example: force directory security mode = 700

       group

           This parameter is a synonym for force group.

       force group (S)

           This specifies a UNIX group name that will be assigned as the default primary group
           for all users connecting to this service. This is useful for sharing files by ensuring
           that all access to files on service will use the named group for their permissions
           checking. Thus, by assigning permissions for this group to the files and directories
           within this service the Samba administrator can restrict or allow sharing of these
           files.

           In Samba 2.0.5 and above this parameter has extended functionality in the following
           way. If the group name listed here has a ´+´ character prepended to it then the
           current user accessing the share only has the primary group default assigned to this
           group if they are already assigned as a member of that group. This allows an
           administrator to decide that only users who are already in a particular group will
           create files with group ownership set to that group. This gives a finer granularity of
           ownership assignment. For example, the setting force group = +sys means that only
           users who are already in group sys will have their default primary group assigned to
           sys when accessing this Samba share. All other users will retain their ordinary
           primary group.

           If the force user parameter is also set the group specified in force group will
           override the primary group set in force user.

           Default: force group =

           Example: force group = agroup

       force printername (S)

           When printing from Windows NT (or later), each printer in smb.conf has two associated
           names which can be used by the client. The first is the sharename (or shortname)
           defined in smb.conf. This is the only printername available for use by Windows 9x
           clients. The second name associated with a printer can be seen when browsing to the
           "Printers" (or "Printers and Faxes") folder on the Samba server. This is referred to
           simply as the printername (not to be confused with the printer name option).

           When assigning a new driver to a printer on a remote Windows compatible print server
           such as Samba, the Windows client will rename the printer to match the driver name
           just uploaded. This can result in confusion for users when multiple printers are bound
           to the same driver. To prevent Samba from allowing the printer´s printername to differ
           from the sharename defined in smb.conf, set force printername = yes.

           Be aware that enabling this parameter may affect migrating printers from a Windows
           server to Samba since Windows has no way to force the sharename and printername to
           match.

           It is recommended that this parameter´s value not be changed once the printer is in
           use by clients as this could cause a user not be able to delete printer connections
           from their local Printers folder.

           Default: force printername = no

       force security mode (S)

           This parameter controls what UNIX permission bits can be modified when a Windows NT
           client is manipulating the UNIX permission on a file using the native NT security
           dialog box.

           This parameter is applied as a mask (OR´ed with) to the changed permission bits, thus
           forcing any bits in this mask that the user may have modified to be on. Make sure not
           to mix up this parameter with security mask, which works similar like this one but
           uses logical AND instead of OR.

           Essentially, one bits in this mask may be treated as a set of bits that, when
           modifying security on a file, the user has always set to be on.

           If not set explicitly this parameter is set to 0, and allows a user to modify all the
           user/group/world permissions on a file, with no restrictions.

            Note that users who can access the Samba server through other means can easily bypass
           this restriction, so it is primarily useful for standalone "appliance" systems.
           Administrators of most normal systems will probably want to leave this set to 0000.

           Default: force security mode = 0

           Example: force security mode = 700

       force unknown acl user (S)

           If this parameter is set, a Windows NT ACL that contains an unknown SID (security
           descriptor, or representation of a user or group id) as the owner or group owner of
           the file will be silently mapped into the current UNIX uid or gid of the currently
           connected user.

           This is designed to allow Windows NT clients to copy files and folders containing ACLs
           that were created locally on the client machine and contain users local to that
           machine only (no domain users) to be copied to a Samba server (usually with XCOPY /O)
           and have the unknown userid and groupid of the file owner map to the current connected
           user. This can only be fixed correctly when winbindd allows arbitrary mapping from any
           Windows NT SID to a UNIX uid or gid.

           Try using this parameter when XCOPY /O gives an ACCESS_DENIED error.

           Default: force unknown acl user = no

       force user (S)

           This specifies a UNIX user name that will be assigned as the default user for all
           users connecting to this service. This is useful for sharing files. You should also
           use it carefully as using it incorrectly can cause security problems.

           This user name only gets used once a connection is established. Thus clients still
           need to connect as a valid user and supply a valid password. Once connected, all file
           operations will be performed as the "forced user", no matter what username the client
           connected as. This can be very useful.

           In Samba 2.0.5 and above this parameter also causes the primary group of the forced
           user to be used as the primary group for all file activity. Prior to 2.0.5 the primary
           group was left as the primary group of the connecting user (this was a bug).

           Default: force user =

           Example: force user = auser

       fstype (S)

           This parameter allows the administrator to configure the string that specifies the
           type of filesystem a share is using that is reported by smbd(8) when a client queries
           the filesystem type for a share. The default type is NTFS for compatibility with
           Windows NT but this can be changed to other strings such as Samba or FAT if required.

           Default: fstype = NTFS

           Example: fstype = Samba

       get quota command (G)

           The get quota command should only be used whenever there is no operating system API
           available from the OS that samba can use.

           This option is only available you have compiled Samba with the --with-sys-quotas
           option or on Linux with --with-quotas and a working quota api was found in the system.

           This parameter should specify the path to a script that queries the quota information
           for the specified user/group for the partition that the specified directory is on.

           Such a script should take 3 arguments:

           ·   directory

           ·   type of query

           ·   uid of user or gid of group

       The type of query can be one of :

       ·   1 - user quotas

       ·   2 - user default quotas (uid = -1)

       ·   3 - group quotas

       ·   4 - group default quotas (gid = -1)

       This script should print one line as output with spaces between the arguments. The
       arguments are:

       ·   Arg 1 - quota flags (0 = no quotas, 1 = quotas enabled, 2 = quotas enabled and
           enforced)

       ·   Arg 2 - number of currently used blocks

       ·   Arg 3 - the softlimit number of blocks

       ·   Arg 4 - the hardlimit number of blocks

       ·   Arg 5 - currently used number of inodes

       ·   Arg 6 - the softlimit number of inodes

       ·   Arg 7 - the hardlimit number of inodes

       ·   Arg 8(optional) - the number of bytes in a block(default is 1024)

       Default: get quota command =

       Example: get quota command = /usr/local/sbin/query_quota

       getwd cache (G)

           This is a tuning option. When this is enabled a caching algorithm will be used to
           reduce the time taken for getwd() calls. This can have a significant impact on
           performance, especially when the wide smbconfoptions parameter is set to no.

           Default: getwd cache = yes

       guest account (G)

           This is a username which will be used for access to services which are specified as
           guest ok (see below). Whatever privileges this user has will be available to any
           client connecting to the guest service. This user must exist in the password file, but
           does not require a valid login. The user account "ftp" is often a good choice for this
           parameter.

           On some systems the default guest account "nobody" may not be able to print. Use
           another account in this case. You should test this by trying to log in as your guest
           user (perhaps by using the su - command) and trying to print using the system print
           command such as lpr(1) or lp(1).

           This parameter does not accept % macros, because many parts of the system require this
           value to be constant for correct operation.

           Default: guest account = nobody # default can be changed at compile-time

           Example: guest account = ftp

       public

           This parameter is a synonym for guest ok.

       guest ok (S)

           If this parameter is yes for a service, then no password is required to connect to the
           service. Privileges will be those of the guest account.

           This parameter nullifies the benefits of setting restrict anonymous = 2

           See the section below on security for more information about this option.

           Default: guest ok = no

       only guest

           This parameter is a synonym for guest only.

       guest only (S)

           If this parameter is yes for a service, then only guest connections to the service are
           permitted. This parameter will have no effect if guest ok is not set for the service.

           See the section below on security for more information about this option.

           Default: guest only = no

       hide dot files (S)

           This is a boolean parameter that controls whether files starting with a dot appear as
           hidden files.

           Default: hide dot files = yes

       hide files (S)

           This is a list of files or directories that are not visible but are accessible. The
           DOS ´hidden´ attribute is applied to any files or directories that match.

           Each entry in the list must be separated by a ´/´, which allows spaces to be included
           in the entry. ´*´ and ´?´ can be used to specify multiple files or directories as in
           DOS wildcards.

           Each entry must be a Unix path, not a DOS path and must not include the Unix directory
           separator ´/´.

           Note that the case sensitivity option is applicable in hiding files.

           Setting this parameter will affect the performance of Samba, as it will be forced to
           check all files and directories for a match as they are scanned.

           The example shown above is based on files that the Macintosh SMB client (DAVE)
           available from Thursby creates for internal use, and also still hides all files
           beginning with a dot.

           An example of us of this parameter is:

               hide files = /.*/DesktopFolderDB/TrashFor%m/resource.frk/

           Default: hide files =  # no file are hidden

       hide special files (S)

           This parameter prevents clients from seeing special files such as sockets, devices and
           fifo´s in directory listings.

           Default: hide special files = no

       hide unreadable (S)

           This parameter prevents clients from seeing the existance of files that cannot be
           read. Defaults to off.

           Default: hide unreadable = no

       hide unwriteable files (S)

           This parameter prevents clients from seeing the existance of files that cannot be
           written to. Defaults to off. Note that unwriteable directories are shown as usual.

           Default: hide unwriteable files = no

       homedir map (G)

           If nis homedir is yes, and smbd(8) is also acting as a Win95/98 logon server then this
           parameter specifies the NIS (or YP) map from which the server for the user´s home
           directory should be extracted. At present, only the Sun auto.home map format is
           understood. The form of the map is:

               username server:/some/file/system

           and the program will extract the servername from before the first ´:´. There should
           probably be a better parsing system that copes with different map formats and also Amd
           (another automounter) maps.

               Note
               A working NIS client is required on the system for this option to work.
           Default: homedir map =

           Example: homedir map = amd.homedir

       host msdfs (G)

           If set to yes, Samba will act as a Dfs server, and allow Dfs-aware clients to browse
           Dfs trees hosted on the server.

           See also the msdfs root share level parameter. For more information on setting up a
           Dfs tree on Samba, refer to the MSFDS chapter in the book Samba3-HOWTO.

           Default: host msdfs = yes

       hostname lookups (G)

           Specifies whether samba should use (expensive) hostname lookups or use the ip
           addresses instead. An example place where hostname lookups are currently used is when
           checking the hosts deny and hosts allow.

           Default: hostname lookups = no

           Example: hostname lookups = yes

       allow hosts

           This parameter is a synonym for hosts allow.

       hosts allow (S)

           A synonym for this parameter is allow hosts.

           This parameter is a comma, space, or tab delimited set of hosts which are permitted to
           access a service.

           If specified in the [global] section then it will apply to all services, regardless of
           whether the individual service has a different setting.

           You can specify the hosts by name or IP number. For example, you could restrict access
           to only the hosts on a Class C subnet with something like allow hosts = 150.203.5..
           The full syntax of the list is described in the man page hosts_access(5). Note that
           this man page may not be present on your system, so a brief description will be given
           here also.

           Note that the localhost address 127.0.0.1 will always be allowed access unless
           specifically denied by a hosts deny option.

           You can also specify hosts by network/netmask pairs and by netgroup names if your
           system supports netgroups. The EXCEPT keyword can also be used to limit a wildcard
           list. The following examples may provide some help:

           Example 1: allow all IPs in 150.203.*.*; except one

           hosts allow = 150.203. EXCEPT 150.203.6.66

           Example 2: allow hosts that match the given network/netmask

           hosts allow = 150.203.15.0/255.255.255.0

           Example 3: allow a couple of hosts

           hosts allow = lapland, arvidsjaur

           Example 4: allow only hosts in NIS netgroup "foonet", but deny access from one
           particular host

           hosts allow = @foonet

           hosts deny = pirate

               Note
               Note that access still requires suitable user-level passwords.
           See testparm(1) for a way of testing your host access to see if it does what you
           expect.

           Default: hosts allow =  # none (i.e., all hosts permitted access)

           Example: hosts allow = 150.203.5. myhost.mynet.edu.au

       deny hosts

           This parameter is a synonym for hosts deny.

       hosts deny (S)

           The opposite of hosts allow - hosts listed here are NOT permitted access to services
           unless the specific services have their own lists to override this one. Where the
           lists conflict, the allow list takes precedence.

           In the event that it is necessary to deny all by default, use the keyword ALL (or the
           netmask 0.0.0.0/0) and then explicitly specify to the hosts allow = hosts allow
           parameter those hosts that should be permitted access.

           Default: hosts deny =  # none (i.e., no hosts specifically excluded)

           Example: hosts deny = 150.203.4. badhost.mynet.edu.au

       idmap backend (G)

           The idmap backend provides a plugin interface for Winbind to use varying backends to
           store SID/uid/gid mapping tables.

           This option specifies the default backend that is used when no special configuration
           set, but it is now deprecated in favour of the new spelling idmap config * : backend.

           Default: idmap backend = tdb

       idmap cache time (G)

           This parameter specifies the number of seconds that Winbind´s idmap interface will
           cache positive SID/uid/gid query results.

           Default: idmap cache time = 604800 (one week)

       idmap config (G)

           ID mapping in Samba is the mapping between Windows SIDs and Unix user and group IDs.
           This is performed by Winbindd with a configurable plugin interface. Samba´s ID mapping
           is configured by options starting with the idmap config prefix. An idmap option
           consists of the idmap config prefix, followed by a domain name or the asterisk
           character (*), a colon, and the name of an idmap setting for the chosen domain.

           The idmap configuration is hence divided into groups, one group for each domain to be
           configured, and one group with the the asterisk instead of a proper domain name, which
           speifies the default configuration that is used to catch all domains that do not have
           an explicit idmap configuration of their own.

           There are three general options available:

           backend = backend_name
               This specifies the name of the idmap plugin to use as the SID/uid/gid backend for
               this domain. The standard backends are tdb (idmap_tdb(8)), tdb2 (idmap_tdb2(8)),
               ldap (idmap_ldap(8)), , rid (idmap_rid(8)), , hash (idmap_hash(8)), , autorid
               (idmap_autorid(8)), , ad (idmap_ad(8)), , adex (idmap_adex(8)), , and nss.
               (idmap_nss(8)), The corresponding manual pages contain the details, but here is a
               summary.

               The first three of these create mappings of their own using internal unixid
               counters and store the mappings in a database. These are suitable for use in the
               default idmap configuration. The rid and hash backends use a pure algorithmic
               calculation to determine the unixid for a SID. The autorid module is a mixture of
               the tdb and rid backend. It creates ranges for each domain encountered and then
               uses the rid algorithm for each of these automatically configured domains
               individually. The ad and adex backends both use unix IDs stored in Active
               Directory via the standard schema extensions. The nss backend reverses the
               standard winbindd setup and gets the unixids via names from nsswitch which can be
               useful in an ldap setup.

           range = low - high
               Defines the available matching uid and gid range for which the backend is
               authoritative. For allocating backends, this also defines the start and the end of
               the range for allocating new unid IDs.

               winbind uses this parameter to find the backend that is authoritative for a unix
               ID to SID mapping, so it must be set for each individually configured domain and
               for the default configuration. The configured ranges must be mutually disjoint.

           read only = yes|no
               This option can be used to turn the writing backends tdb, tdb2, and ldap into read
               only mode. This can be useful e.g. in cases where a pre-filled database exists
               that should not be extended automatically.

           The following example illustrates how to configure the idmap_ad(8) backend for the
           CORP domain and the idmap_tdb(8) backend for all other domains. This configuration
           assumes that the admin of CORP assigns unix ids below 1000000 via the SFU extensions,
           and winbind is supposed to use the next million entries for its own mappings from
           trusted domains and for local groups for example.

                    idmap config * : backend = tdb
                    idmap config * : range = 1000000-1999999

                    idmap config CORP : backend  = ad
                    idmap config CORP : range = 1000-999999

           No default

       winbind gid

           This parameter is a synonym for idmap gid.

       idmap gid (G)

           The idmap gid parameter specifies the range of group ids for the default idmap
           configuration. It is now deprecated in favour of idmap config * : range.

           See the idmap config option.

           Default: idmap gid =

           Example: idmap gid = 10000-20000

       idmap negative cache time (G)

           This parameter specifies the number of seconds that Winbind´s idmap interface will
           cache negative SID/uid/gid query results.

           Default: idmap negative cache time = 120

       winbind uid

           This parameter is a synonym for idmap uid.

       idmap uid (G)

           The idmap uid parameter specifies the range of user ids for the default idmap
           configuration. It is now deprecated in favour of idmap config * : range.

           See the idmap config option.

           Default: idmap uid =

           Example: idmap uid = 10000-20000

       include (G)

           This allows you to include one config file inside another. The file is included
           literally, as though typed in place.

           It takes the standard substitutions, except %u, %P and %S.

           The parameter include = registry has a special meaning: It does not include a file
           named registry from the current working directory, but instead reads the global
           configuration options from the registry. See the section on registry-based
           configuration for details. Note that this option automatically activates registry
           shares.

           Default: include =

           Example: include = /usr/local/samba/lib/admin_smb.conf

       inherit acls (S)

           This parameter can be used to ensure that if default acls exist on parent directories,
           they are always honored when creating a new file or subdirectory in these parent
           directories. The default behavior is to use the unix mode specified when creating the
           directory. Enabling this option sets the unix mode to 0777, thus guaranteeing that
           default directory acls are propagated. Note that using the VFS modules acl_xattr or
           acl_tdb which store native Windows as meta-data will automatically turn this option on
           for any share for which they are loaded, as they require this option to emulate
           Windows ACLs correctly.

           Default: inherit acls = no

       inherit owner (S)

           The ownership of new files and directories is normally governed by effective uid of
           the connected user. This option allows the Samba administrator to specify that the
           ownership for new files and directories should be controlled by the ownership of the
           parent directory.

           Common scenarios where this behavior is useful is in implementing drop-boxes where
           users can create and edit files but not delete them and to ensure that newly create
           files in a user´s roaming profile directory are actually owner by the user.

           Default: inherit owner = no

       inherit permissions (S)

           The permissions on new files and directories are normally governed by create mask,
           directory mask, force create mode and force directory mode but the boolean inherit
           permissions parameter overrides this.

           New directories inherit the mode of the parent directory, including bits such as
           setgid.

           New files inherit their read/write bits from the parent directory. Their execute bits
           continue to be determined by map archive, map hidden and map system as usual.

           Note that the setuid bit is never set via inheritance (the code explicitly prohibits
           this).

           This can be particularly useful on large systems with many users, perhaps several
           thousand, to allow a single [homes] share to be used flexibly by each user.

           Default: inherit permissions = no

       init logon delayed hosts (G)

           This parameter takes a list of host names, addresses or networks for which the initial
           samlogon reply should be delayed (so other DCs get preferred by XP workstations if
           there are any).

           The length of the delay can be specified with the init logon delay parameter.

           Default: init logon delayed hosts =

           Example: init logon delayed hosts = 150.203.5. myhost.mynet.de

       init logon delay (G)

           This parameter specifies a delay in milliseconds for the hosts configured for delayed
           initial samlogon with init logon delayed hosts.

           Default: init logon delay = 100

       interfaces (G)

           This option allows you to override the default network interfaces list that Samba will
           use for browsing, name registration and other NetBIOS over TCP/IP (NBT) traffic. By
           default Samba will query the kernel for the list of all active interfaces and use any
           interfaces except 127.0.0.1 that are broadcast capable.

           The option takes a list of interface strings. Each string can be in any of the
           following forms:

           ·   a network interface name (such as eth0). This may include shell-like wildcards so
               eth* will match any interface starting with the substring "eth"

           ·   an IP address. In this case the netmask is determined from the list of interfaces
               obtained from the kernel

           ·   an IP/mask pair.

           ·   a broadcast/mask pair.

       The "mask" parameters can either be a bit length (such as 24 for a C class network) or a
       full netmask in dotted decimal form.

       The "IP" parameters above can either be a full dotted decimal IP address or a hostname
       which will be looked up via the OS´s normal hostname resolution mechanisms.

       By default Samba enables all active interfaces that are broadcast capable except the
       loopback adaptor (IP address 127.0.0.1).

       The example below configures three network interfaces corresponding to the eth0 device and
       IP addresses 192.168.2.10 and 192.168.3.10. The netmasks of the latter two interfaces
       would be set to 255.255.255.0.

       Default: interfaces =

       Example: interfaces = eth0 192.168.2.10/24 192.168.3.10/255.255.255.0

       invalid users (S)

           This is a list of users that should not be allowed to login to this service. This is
           really a paranoid check to absolutely ensure an improper setting does not breach your
           security.

           A name starting with a ´@´ is interpreted as an NIS netgroup first (if your system
           supports NIS), and then as a UNIX group if the name was not found in the NIS netgroup
           database.

           A name starting with ´+´ is interpreted only by looking in the UNIX group database via
           the NSS getgrnam() interface. A name starting with ´&´ is interpreted only by looking
           in the NIS netgroup database (this requires NIS to be working on your system). The
           characters ´+´ and ´&´ may be used at the start of the name in either order so the
           value +&group means check the UNIX group database, followed by the NIS netgroup
           database, and the value &+group means check the NIS netgroup database, followed by the
           UNIX group database (the same as the ´@´ prefix).

           The current servicename is substituted for %S. This is useful in the [homes] section.

           Default: invalid users =  # no invalid users

           Example: invalid users = root fred admin @wheel

       iprint server (G)

           This parameter is only applicable if printing is set to iprint.

           If set, this option overrides the ServerName option in the CUPS client.conf. This is
           necessary if you have virtual samba servers that connect to different CUPS daemons.

           Default: iprint server = ""

           Example: iprint server = MYCUPSSERVER

       keepalive (G)

           The value of the parameter (an integer) represents the number of seconds between
           keepalive packets. If this parameter is zero, no keepalive packets will be sent.
           Keepalive packets, if sent, allow the server to tell whether a client is still present
           and responding.

           Keepalives should, in general, not be needed if the socket has the SO_KEEPALIVE
           attribute set on it by default. (see socket options). Basically you should only use
           this option if you strike difficulties.

           Default: keepalive = 300

           Example: keepalive = 600

       kerberos method (G)

           Controls how kerberos tickets are verified.

           Valid options are:

           ·   secrets only - use only the secrets.tdb for ticket verification (default)

           ·   system keytab - use only the system keytab for ticket verification

           ·   dedicated keytab - use a dedicated keytab for ticket verification

           ·   secrets and keytab - use the secrets.tdb first, then the system keytab

       The major difference between "system keytab" and "dedicated keytab" is that the latter
       method relies on kerberos to find the correct keytab entry instead of filtering based on
       expected principals.

       When the kerberos method is in "dedicated keytab" mode, dedicated keytab file must be set
       to specify the location of the keytab file.

       Default: kerberos method = secrets only

       kernel change notify (S)

           This parameter specifies whether Samba should ask the kernel for change notifications
           in directories so that SMB clients can refresh whenever the data on the server
           changes.

           This parameter is only used when your kernel supports change notification to user
           programs using the inotify interface.

           Default: kernel change notify = yes

       kernel oplocks (G)

           For UNIXes that support kernel based oplocks (currently only IRIX and the Linux 2.4
           kernel), this parameter allows the use of them to be turned on or off.

           Kernel oplocks support allows Samba oplocks to be broken whenever a local UNIX process
           or NFS operation accesses a file that smbd(8) has oplocked. This allows complete data
           consistency between SMB/CIFS, NFS and local file access (and is a very cool feature
           :-).

           This parameter defaults to on, but is translated to a no-op on systems that no not
           have the necessary kernel support. You should never need to touch this parameter.

           Default: kernel oplocks = yes

       lanman auth (G)

           This parameter determines whether or not smbd(8) will attempt to authenticate users or
           permit password changes using the LANMAN password hash. If disabled, only clients
           which support NT password hashes (e.g. Windows NT/2000 clients, smbclient, but not
           Windows 95/98 or the MS DOS network client) will be able to connect to the Samba host.

           The LANMAN encrypted response is easily broken, due to its case-insensitive nature,
           and the choice of algorithm. Servers without Windows 95/98/ME or MS DOS clients are
           advised to disable this option.

           When this parameter is set to no this will also result in sambaLMPassword in Samba´s
           passdb being blanked after the next password change. As a result of that lanman
           clients won´t be able to authenticate, even if lanman auth is reenabled later on.

           Unlike the encrypt passwords option, this parameter cannot alter client behaviour, and
           the LANMAN response will still be sent over the network. See the client lanman auth to
           disable this for Samba´s clients (such as smbclient)

           If this option, and ntlm auth are both disabled, then only NTLMv2 logins will be
           permited. Not all clients support NTLMv2, and most will require special configuration
           to use it.

           Default: lanman auth = no

       large readwrite (G)

           This parameter determines whether or not smbd(8) supports the new 64k streaming read
           and write variant SMB requests introduced with Windows 2000. Note that due to Windows
           2000 client redirector bugs this requires Samba to be running on a 64-bit capable
           operating system such as IRIX, Solaris or a Linux 2.4 kernel. Can improve performance
           by 10% with Windows 2000 clients. Defaults to on. Not as tested as some other Samba
           code paths.

           Default: large readwrite = yes

       ldap admin dn (G)

           The ldap admin dn defines the Distinguished Name (DN) name used by Samba to contact
           the ldap server when retreiving user account information. The ldap admin dn is used in
           conjunction with the admin dn password stored in the private/secrets.tdb file. See the
           smbpasswd(8) man page for more information on how to accomplish this.

           The ldap admin dn requires a fully specified DN. The ldap suffix is not appended to
           the ldap admin dn.

           No default

       ldap connection timeout (G)

           This parameter tells the LDAP library calls which timeout in seconds they should honor
           during initial connection establishments to LDAP servers. It is very useful in
           failover scenarios in particular. If one or more LDAP servers are not reachable at
           all, we do not have to wait until TCP timeouts are over. This feature must be
           supported by your LDAP library.

           This parameter is different from ldap timeout which affects operations on LDAP servers
           using an existing connection and not establishing an initial connection.

           Default: ldap connection timeout = 2

       ldap debug level (G)

           This parameter controls the debug level of the LDAP library calls. In the case of
           OpenLDAP, it is the same bit-field as understood by the server and documented in the
           slapd.conf(5) manpage. A typical useful value will be 1 for tracing function calls.

           The debug ouput from the LDAP libraries appears with the prefix [LDAP] in Samba´s
           logging output. The level at which LDAP logging is printed is controlled by the
           parameter ldap debug threshold.

           Default: ldap debug level = 0

           Example: ldap debug level = 1

       ldap debug threshold (G)

           This parameter controls the Samba debug level at which the ldap library debug output
           is printed in the Samba logs. See the description of ldap debug level for details.

           Default: ldap debug threshold = 10

           Example: ldap debug threshold = 5

       ldap delete dn (G)

           This parameter specifies whether a delete operation in the ldapsam deletes the
           complete entry or only the attributes specific to Samba.

           Default: ldap delete dn = no

       ldap deref (G)

           This option controls whether Samba should tell the LDAP library to use a certain alias
           dereferencing method. The default is auto, which means that the default setting of the
           ldap client library will be kept. Other possible values are never, finding, searching
           and always. Grab your LDAP manual for more information.

           Default: ldap deref = auto

           Example: ldap deref = searching

       ldap follow referral (G)

           This option controls whether to follow LDAP referrals or not when searching for
           entries in the LDAP database. Possible values are on to enable following referrals,
           off to disable this, and auto, to use the libldap default settings. libldap´s choice
           of following referrals or not is set in /etc/openldap/ldap.conf with the REFERRALS
           parameter as documented in ldap.conf(5).

           Default: ldap follow referral = auto

           Example: ldap follow referral = off

       ldap group suffix (G)

           This parameter specifies the suffix that is used for groups when these are added to
           the LDAP directory. If this parameter is unset, the value of ldap suffix will be used
           instead. The suffix string is pre-pended to the ldap suffix string so use a partial
           DN.

           Default: ldap group suffix =

           Example: ldap group suffix = ou=Groups

       ldap idmap suffix (G)

           This parameters specifies the suffix that is used when storing idmap mappings. If this
           parameter is unset, the value of ldap suffix will be used instead. The suffix string
           is pre-pended to the ldap suffix string so use a partial DN.

           Default: ldap idmap suffix =

           Example: ldap idmap suffix = ou=Idmap

       ldap machine suffix (G)

           It specifies where machines should be added to the ldap tree. If this parameter is
           unset, the value of ldap suffix will be used instead. The suffix string is pre-pended
           to the ldap suffix string so use a partial DN.

           Default: ldap machine suffix =

           Example: ldap machine suffix = ou=Computers

       ldap page size (G)

           This parameter specifies the number of entries per page.

           If the LDAP server supports paged results, clients can request subsets of search
           results (pages) instead of the entire list. This parameter specifies the size of these
           pages.

           Default: ldap page size = 1024

           Example: ldap page size = 512

       ldap passwd sync (G)

           This option is used to define whether or not Samba should sync the LDAP password with
           the NT and LM hashes for normal accounts (NOT for workstation, server or domain
           trusts) on a password change via SAMBA.

           The ldap passwd sync can be set to one of three values:

           ·   Yes = Try to update the LDAP, NT and LM passwords and update the pwdLastSet time.

           ·   No = Update NT and LM passwords and update the pwdLastSet time.

           ·   Only = Only update the LDAP password and let the LDAP server do the rest.

       Default: ldap passwd sync = no

       ldap replication sleep (G)

           When Samba is asked to write to a read-only LDAP replica, we are redirected to talk to
           the read-write master server. This server then replicates our changes back to the
           ´local´ server, however the replication might take some seconds, especially over slow
           links. Certain client activities, particularly domain joins, can become confused by
           the ´success´ that does not immediately change the LDAP back-end´s data.

           This option simply causes Samba to wait a short time, to allow the LDAP server to
           catch up. If you have a particularly high-latency network, you may wish to time the
           LDAP replication with a network sniffer, and increase this value accordingly. Be aware
           that no checking is performed that the data has actually replicated.

           The value is specified in milliseconds, the maximum value is 5000 (5 seconds).

           Default: ldap replication sleep = 1000

       ldapsam:editposix (G)

           Editposix is an option that leverages ldapsam:trusted to make it simpler to manage a
           domain controller eliminating the need to set up custom scripts to add and manage the
           posix users and groups. This option will instead directly manipulate the ldap tree to
           create, remove and modify user and group entries. This option also requires a running
           winbindd as it is used to allocate new uids/gids on user/group creation. The
           allocation range must be therefore configured.

           To use this option, a basic ldap tree must be provided and the ldap suffix parameters
           must be properly configured. On virgin servers the default users and groups
           (Administrator, Guest, Domain Users, Domain Admins, Domain Guests) can be precreated
           with the command net sam provision. To run this command the ldap server must be
           running, Winindd must be running and the smb.conf ldap options must be properly
           configured. The typical ldap setup used with the ldapsam:trusted = yes option is
           usually sufficient to use ldapsam:editposix = yes as well.

           An example configuration can be the following:

                    encrypt passwords = true
                    passdb backend = ldapsam

                    ldapsam:trusted=yes
                    ldapsam:editposix=yes

                    ldap admin dn = cn=admin,dc=samba,dc=org
                    ldap delete dn = yes
                    ldap group suffix = ou=groups
                    ldap idmap suffix = ou=idmap
                    ldap machine suffix = ou=computers
                    ldap user suffix = ou=users
                    ldap suffix = dc=samba,dc=org

                    idmap backend = ldap:"ldap://localhost"

                    idmap uid = 5000-50000
                    idmap gid = 5000-50000

           This configuration assumes a directory layout like described in the following ldif:

                    dn: dc=samba,dc=org
                    objectClass: top
                    objectClass: dcObject
                    objectClass: organization
                    o: samba.org
                    dc: samba

                    dn: cn=admin,dc=samba,dc=org
                    objectClass: simpleSecurityObject
                    objectClass: organizationalRole
                    cn: admin
                    description: LDAP administrator
                    userPassword: secret

                    dn: ou=users,dc=samba,dc=org
                    objectClass: top
                    objectClass: organizationalUnit
                    ou: users

                    dn: ou=groups,dc=samba,dc=org
                    objectClass: top
                    objectClass: organizationalUnit
                    ou: groups

                    dn: ou=idmap,dc=samba,dc=org
                    objectClass: top
                    objectClass: organizationalUnit
                    ou: idmap

                    dn: ou=computers,dc=samba,dc=org
                    objectClass: top
                    objectClass: organizationalUnit
                    ou: computers

           Default: ldapsam:editposix = no

       ldapsam:trusted (G)

           By default, Samba as a Domain Controller with an LDAP backend needs to use the
           Unix-style NSS subsystem to access user and group information. Due to the way Unix
           stores user information in /etc/passwd and /etc/group this inevitably leads to
           inefficiencies. One important question a user needs to know is the list of groups he
           is member of. The plain UNIX model involves a complete enumeration of the file
           /etc/group and its NSS counterparts in LDAP. UNIX has optimized functions to enumerate
           group membership. Sadly, other functions that are used to deal with user and group
           attributes lack such optimization.

           To make Samba scale well in large environments, the ldapsam:trusted = yes option
           assumes that the complete user and group database that is relevant to Samba is stored
           in LDAP with the standard posixAccount/posixGroup attributes. It further assumes that
           the Samba auxiliary object classes are stored together with the POSIX data in the same
           LDAP object. If these assumptions are met, ldapsam:trusted = yes can be activated and
           Samba can bypass the NSS system to query user group memberships. Optimized LDAP
           queries can greatly speed up domain logon and administration tasks. Depending on the
           size of the LDAP database a factor of 100 or more for common queries is easily
           achieved.

           Default: ldapsam:trusted = no

       ldap ssl ads (G)

           This option is used to define whether or not Samba should use SSL when connecting to
           the ldap server using ads methods. Rpc methods are not affected by this parameter.
           Please note, that this parameter won´t have any effect if ldap ssl is set to no.

           See smb.conf(5) for more information on ldap ssl.

           Default: ldap ssl ads = no

       ldap ssl (G)

           This option is used to define whether or not Samba should use SSL when connecting to
           the ldap server This is NOT related to Samba´s previous SSL support which was enabled
           by specifying the --with-ssl option to the configure script.

           LDAP connections should be secured where possible. This may be done setting either
           this parameter to Start_tls or by specifying ldaps:// in the URL argument of passdb
           backend.

           The ldap ssl can be set to one of two values:

           ·   Off = Never use SSL when querying the directory.

           ·   start tls = Use the LDAPv3 StartTLS extended operation (RFC2830) for communicating
               with the directory server.

       Please note that this parameter does only affect rpc methods. To enable the LDAPv3
       StartTLS extended operation (RFC2830) for ads, set ldap ssl = yes and ldap ssl ads = yes.
       See smb.conf(5) for more information on ldap ssl ads.

       Default: ldap ssl = start tls

       ldap suffix (G)

           Specifies the base for all ldap suffixes and for storing the sambaDomain object.

           The ldap suffix will be appended to the values specified for the ldap user suffix,
           ldap group suffix, ldap machine suffix, and the ldap idmap suffix. Each of these
           should be given only a DN relative to the ldap suffix.

           Default: ldap suffix =

           Example: ldap suffix = dc=samba,dc=org

       ldap timeout (G)

           This parameter defines the number of seconds that Samba should use as timeout for LDAP
           operations.

           Default: ldap timeout = 15

       ldap user suffix (G)

           This parameter specifies where users are added to the tree. If this parameter is
           unset, the value of ldap suffix will be used instead. The suffix string is pre-pended
           to the ldap suffix string so use a partial DN.

           Default: ldap user suffix =

           Example: ldap user suffix = ou=people

       level2 oplocks (S)

           This parameter controls whether Samba supports level2 (read-only) oplocks on a share.

           Level2, or read-only oplocks allow Windows NT clients that have an oplock on a file to
           downgrade from a read-write oplock to a read-only oplock once a second client opens
           the file (instead of releasing all oplocks on a second open, as in traditional,
           exclusive oplocks). This allows all openers of the file that support level2 oplocks to
           cache the file for read-ahead only (ie. they may not cache writes or lock requests)
           and increases performance for many accesses of files that are not commonly written
           (such as application .EXE files).

           Once one of the clients which have a read-only oplock writes to the file all clients
           are notified (no reply is needed or waited for) and told to break their oplocks to
           "none" and delete any read-ahead caches.

           It is recommended that this parameter be turned on to speed access to shared
           executables.

           For more discussions on level2 oplocks see the CIFS spec.

           Currently, if kernel oplocks are supported then level2 oplocks are not granted (even
           if this parameter is set to yes). Note also, the oplocks parameter must be set to yes
           on this share in order for this parameter to have any effect.

           Default: level2 oplocks = yes

       lm announce (G)

           This parameter determines if nmbd(8) will produce Lanman announce broadcasts that are
           needed by OS/2 clients in order for them to see the Samba server in their browse list.
           This parameter can have three values, yes, no, or auto. The default is auto. If set to
           no Samba will never produce these broadcasts. If set to yes Samba will produce Lanman
           announce broadcasts at a frequency set by the parameter lm interval. If set to auto
           Samba will not send Lanman announce broadcasts by default but will listen for them. If
           it hears such a broadcast on the wire it will then start sending them at a frequency
           set by the parameter lm interval.

           Default: lm announce = auto

           Example: lm announce = yes

       lm interval (G)

           If Samba is set to produce Lanman announce broadcasts needed by OS/2 clients (see the
           lm announce parameter) then this parameter defines the frequency in seconds with which
           they will be made. If this is set to zero then no Lanman announcements will be made
           despite the setting of the lm announce parameter.

           Default: lm interval = 60

           Example: lm interval = 120

       load printers (G)

           A boolean variable that controls whether all printers in the printcap will be loaded
           for browsing by default. See the printers section for more details.

           Default: load printers = yes

       local master (G)

           This option allows nmbd(8) to try and become a local master browser on a subnet. If
           set to no then nmbd will not attempt to become a local master browser on a subnet and
           will also lose in all browsing elections. By default this value is set to yes. Setting
           this value to yes doesn´t mean that Samba will become the local master browser on a
           subnet, just that nmbd will participate in elections for local master browser.

           Setting this value to no will cause nmbd never to become a local master browser.

           Default: local master = yes

       lock dir

           This parameter is a synonym for lock directory.

       lock directory (G)

           This option specifies the directory where lock files will be placed. The lock files
           are used to implement the max connections option.

           Note: This option can not be set inside registry configurations.

           Default: lock directory = ${prefix}/var/locks

           Example: lock directory = /var/run/samba/locks

       locking (S)

           This controls whether or not locking will be performed by the server in response to
           lock requests from the client.

           If locking = no, all lock and unlock requests will appear to succeed and all lock
           queries will report that the file in question is available for locking.

           If locking = yes, real locking will be performed by the server.

           This option may be useful for read-only filesystems which may not need locking (such
           as CDROM drives), although setting this parameter of no is not really recommended even
           in this case.

           Be careful about disabling locking either globally or in a specific service, as lack
           of locking may result in data corruption. You should never need to set this parameter.

           No default

       lock spin count (G)

           This parameter has been made inoperative in Samba 3.0.24. The functionality it
           contolled is now controlled by the parameter lock spin time.

           Default: lock spin count = 0

       lock spin time (G)

           The time in milliseconds that smbd should keep waiting to see if a failed lock request
           can be granted. This parameter has changed in default value from Samba 3.0.23 from 10
           to 200. The associated lock spin count parameter is no longer used in Samba 3.0.24.
           You should not need to change the value of this parameter.

           Default: lock spin time = 200

       log file (G)

           This option allows you to override the name of the Samba log file (also known as the
           debug file).

           This option takes the standard substitutions, allowing you to have separate log files
           for each user or machine.

           No default

           Example: log file = /usr/local/samba/var/log.%m

       debuglevel

           This parameter is a synonym for log level.

       log level (G)

           The value of the parameter (a astring) allows the debug level (logging level) to be
           specified in the smb.conf file.

           This parameter has been extended since the 2.2.x series, now it allows to specify the
           debug level for multiple debug classes. This is to give greater flexibility in the
           configuration of the system. The following debug classes are currently implemented:

           ·   all

           ·   tdb

           ·   printdrivers

           ·   lanman

           ·   smb

           ·   rpc_parse

           ·   rpc_srv

           ·   rpc_cli

           ·   passdb

           ·   sam

           ·   auth

           ·   winbind

           ·   vfs

           ·   idmap

           ·   quota

           ·   acls

           ·   locking

           ·   msdfs

           ·   dmapi

           ·   registry

       Default: log level = 0

       Example: log level = 3 passdb:5 auth:10 winbind:2

       logon drive (G)

           This parameter specifies the local path to which the home directory will be connected
           (see logon home) and is only used by NT Workstations.

           Note that this option is only useful if Samba is set up as a logon server.

           Default: logon drive =

           Example: logon drive = h:

       logon home (G)

           This parameter specifies the home directory location when a Win95/98 or NT Workstation
           logs into a Samba PDC. It allows you to do

           C:\>NET USE H: /HOME

           from a command prompt, for example.

           This option takes the standard substitutions, allowing you to have separate logon
           scripts for each user or machine.

           This parameter can be used with Win9X workstations to ensure that roaming profiles are
           stored in a subdirectory of the user´s home directory. This is done in the following
           way:

           logon home = \\%N\%U\profile

           This tells Samba to return the above string, with substitutions made when a client
           requests the info, generally in a NetUserGetInfo request. Win9X clients truncate the
           info to \\server\share when a user does net use /home but use the whole string when
           dealing with profiles.

           Note that in prior versions of Samba, the logon path was returned rather than logon
           home. This broke net use /home but allowed profiles outside the home directory. The
           current implementation is correct, and can be used for profiles if you use the above
           trick.

           Disable this feature by setting logon home = "" - using the empty string.

           This option is only useful if Samba is set up as a logon server.

           Default: logon home = \\%N\%U

           Example: logon home = \\remote_smb_server\%U

       logon path (G)

           This parameter specifies the directory where roaming profiles (Desktop, NTuser.dat,
           etc) are stored. Contrary to previous versions of these manual pages, it has nothing
           to do with Win 9X roaming profiles. To find out how to handle roaming profiles for Win
           9X system, see the logon home parameter.

           This option takes the standard substitutions, allowing you to have separate logon
           scripts for each user or machine. It also specifies the directory from which the
           "Application Data", desktop, start menu, network neighborhood, programs and other
           folders, and their contents, are loaded and displayed on your Windows NT client.

           The share and the path must be readable by the user for the preferences and
           directories to be loaded onto the Windows NT client. The share must be writeable when
           the user logs in for the first time, in order that the Windows NT client can create
           the NTuser.dat and other directories. Thereafter, the directories and any of the
           contents can, if required, be made read-only. It is not advisable that the NTuser.dat
           file be made read-only - rename it to NTuser.man to achieve the desired effect (a
           MANdatory profile).

           Windows clients can sometimes maintain a connection to the [homes] share, even though
           there is no user logged in. Therefore, it is vital that the logon path does not
           include a reference to the homes share (i.e. setting this parameter to
           \\%N\homes\profile_path will cause problems).

           This option takes the standard substitutions, allowing you to have separate logon
           scripts for each user or machine.

               Warning
               Do not quote the value. Setting this as “\\%N\profile\%U” will break profile
               handling. Where the tdbsam or ldapsam passdb backend is used, at the time the user
               account is created the value configured for this parameter is written to the
               passdb backend and that value will over-ride the parameter value present in the
               smb.conf file. Any error present in the passdb backend account record must be
               editted using the appropriate tool (pdbedit on the command-line, or any other
               locally provided system tool).
           Note that this option is only useful if Samba is set up as a domain controller.

           Disable the use of roaming profiles by setting the value of this parameter to the
           empty string. For example, logon path = "". Take note that even if the default setting
           in the smb.conf file is the empty string, any value specified in the user account
           settings in the passdb backend will over-ride the effect of setting this parameter to
           null. Disabling of all roaming profile use requires that the user account settings
           must also be blank.

           An example of use is:

               logon path = \\PROFILESERVER\PROFILE\%U

           Default: logon path = \\%N\%U\profile

       logon script (G)

           This parameter specifies the batch file (.bat) or NT command file (.cmd) to be
           downloaded and run on a machine when a user successfully logs in. The file must
           contain the DOS style CR/LF line endings. Using a DOS-style editor to create the file
           is recommended.

           The script must be a relative path to the [netlogon] service. If the [netlogon]
           service specifies a path of /usr/local/samba/netlogon, and logon script = STARTUP.BAT,
           then the file that will be downloaded is:

                    /usr/local/samba/netlogon/STARTUP.BAT

           The contents of the batch file are entirely your choice. A suggested command would be
           to add NET TIME \\SERVER /SET /YES, to force every machine to synchronize clocks with
           the same time server. Another use would be to add NET USE U: \\SERVER\UTILS for
           commonly used utilities, or

               NET USE Q: \\SERVER\ISO9001_QA

           for example.

           Note that it is particularly important not to allow write access to the [netlogon]
           share, or to grant users write permission on the batch files in a secure environment,
           as this would allow the batch files to be arbitrarily modified and security to be
           breached.

           This option takes the standard substitutions, allowing you to have separate logon
           scripts for each user or machine.

           This option is only useful if Samba is set up as a logon server.

           Default: logon script =

           Example: logon script = scripts\%U.bat

       log writeable files on exit (G)

           When the network connection between a CIFS client and Samba dies, Samba has no option
           but to simply shut down the server side of the network connection. If this happens,
           there is a risk of data corruption because the Windows client did not complete all
           write operations that the Windows application requested. Setting this option to "yes"
           makes smbd log with a level 0 message a list of all files that have been opened for
           writing when the network connection died. Those are the files that are potentially
           corrupted. It is meant as an aid for the administrator to give him a list of files to
           do consistency checks on.

           Default: log writeable files on exit = no

       lppause command (S)

           This parameter specifies the command to be executed on the server host in order to
           stop printing or spooling a specific print job.

           This command should be a program or script which takes a printer name and job number
           to pause the print job. One way of implementing this is by using job priorities, where
           jobs having a too low priority won´t be sent to the printer.

           If a %p is given then the printer name is put in its place. A %j is replaced with the
           job number (an integer). On HPUX (see printing=hpux ), if the -p%p option is added to
           the lpq command, the job will show up with the correct status, i.e. if the job
           priority is lower than the set fence priority it will have the PAUSED status, whereas
           if the priority is equal or higher it will have the SPOOLED or PRINTING status.

           Note that it is good practice to include the absolute path in the lppause command as
           the PATH may not be available to the server.

           Default: lppause command =  # Currently no default value is given to this string,
           unless the value of the printing parameter is SYSV, in which case the default is : lp
           -i %p-%j -H hold or if the value of the printing parameter is SOFTQ, then the default
           is: qstat -s -j%j -h.

           Example: lppause command = /usr/bin/lpalt %p-%j -p0

       lpq cache time (G)

           This controls how long lpq info will be cached for to prevent the lpq command being
           called too often. A separate cache is kept for each variation of the lpq command used
           by the system, so if you use different lpq commands for different users then they
           won´t share cache information.

           The cache files are stored in /tmp/lpq.xxxx where xxxx is a hash of the lpq command in
           use.

           The default is 30 seconds, meaning that the cached results of a previous identical lpq
           command will be used if the cached data is less than 30 seconds old. A large value may
           be advisable if your lpq command is very slow.

           A value of 0 will disable caching completely.

           Default: lpq cache time = 30

           Example: lpq cache time = 10

       lpq command (S)

           This parameter specifies the command to be executed on the server host in order to
           obtain lpq-style printer status information.

           This command should be a program or script which takes a printer name as its only
           parameter and outputs printer status information.

           Currently nine styles of printer status information are supported; BSD, AIX, LPRNG,
           PLP, SYSV, HPUX, QNX, CUPS, and SOFTQ. This covers most UNIX systems. You control
           which type is expected using the printing = option.

           Some clients (notably Windows for Workgroups) may not correctly send the connection
           number for the printer they are requesting status information about. To get around
           this, the server reports on the first printer service connected to by the client. This
           only happens if the connection number sent is invalid.

           If a %p is given then the printer name is put in its place. Otherwise it is placed at
           the end of the command.

           Note that it is good practice to include the absolute path in the lpq command as the
           $PATH may not be available to the server. When compiled with the CUPS libraries, no
           lpq command is needed because smbd will make a library call to obtain the print queue
           listing.

           Default: lpq command =

           Example: lpq command = /usr/bin/lpq -P%p

       lpresume command (S)

           This parameter specifies the command to be executed on the server host in order to
           restart or continue printing or spooling a specific print job.

           This command should be a program or script which takes a printer name and job number
           to resume the print job. See also the lppause command parameter.

           If a %p is given then the printer name is put in its place. A %j is replaced with the
           job number (an integer).

           Note that it is good practice to include the absolute path in the lpresume command as
           the PATH may not be available to the server.

           See also the printing parameter.

           Default: Currently no default value is given to this string, unless the value of the
           printing parameter is SYSV, in which case the default is:

           lp -i %p-%j -H resume

           or if the value of the printing parameter is SOFTQ, then the default is:

           qstat -s -j%j -r

           No default

           Example: lpresume command = /usr/bin/lpalt %p-%j -p2

       lprm command (S)

           This parameter specifies the command to be executed on the server host in order to
           delete a print job.

           This command should be a program or script which takes a printer name and job number,
           and deletes the print job.

           If a %p is given then the printer name is put in its place. A %j is replaced with the
           job number (an integer).

           Note that it is good practice to include the absolute path in the lprm command as the
           PATH may not be available to the server.

           Examples of use are:

               lprm command = /usr/bin/lprm -P%p %j

               or

               lprm command = /usr/bin/cancel %p-%j

           Default: lprm command =  determined by printing parameter

       machine password timeout (G)

           If a Samba server is a member of a Windows NT Domain (see the security = domain
           parameter) then periodically a running smbd process will try and change the MACHINE
           ACCOUNT PASSWORD stored in the TDB called private/secrets.tdb. This parameter
           specifies how often this password will be changed, in seconds. The default is one week
           (expressed in seconds), the same as a Windows NT Domain member server.

           See also smbpasswd(8), and the security = domain parameter.

           Default: machine password timeout = 604800

       magic output (S)

           This parameter specifies the name of a file which will contain output created by a
           magic script (see the magic script parameter below).

               Warning
               If two clients use the same magic script in the same directory the output file
               content is undefined.
           Default: magic output = <magic script name>.out

           Example: magic output = myfile.txt

       magic script (S)

           This parameter specifies the name of a file which, if opened, will be executed by the
           server when the file is closed. This allows a UNIX script to be sent to the Samba host
           and executed on behalf of the connected user.

           Scripts executed in this way will be deleted upon completion assuming that the user
           has the appropriate level of privilege and the file permissions allow the deletion.

           If the script generates output, output will be sent to the file specified by the magic
           output parameter (see above).

           Note that some shells are unable to interpret scripts containing CR/LF instead of CR
           as the end-of-line marker. Magic scripts must be executable as is on the host, which
           for some hosts and some shells will require filtering at the DOS end.

           Magic scripts are EXPERIMENTAL and should NOT be relied upon.

           Default: magic script =

           Example: magic script = user.csh

       mangled names (S)

           This controls whether non-DOS names under UNIX should be mapped to DOS-compatible
           names ("mangled") and made visible, or whether non-DOS names should simply be ignored.

           See the section on name mangling for details on how to control the mangling process.

           If mangling is used then the mangling method is as follows:

           ·   The first (up to) five alphanumeric characters before the rightmost dot of the
               filename are preserved, forced to upper case, and appear as the first (up to) five
               characters of the mangled name.

           ·   A tilde "~" is appended to the first part of the mangled name, followed by a
               two-character unique sequence, based on the original root name (i.e., the original
               filename minus its final extension). The final extension is included in the hash
               calculation only if it contains any upper case characters or is longer than three
               characters.

               Note that the character to use may be specified using the mangling char option, if
               you don´t like ´~´.

           ·   Files whose UNIX name begins with a dot will be presented as DOS hidden files. The
               mangled name will be created as for other filenames, but with the leading dot
               removed and "___" as its extension regardless of actual original extension (that´s
               three underscores).

       The two-digit hash value consists of upper case alphanumeric characters.

       This algorithm can cause name collisions only if files in a directory share the same first
       five alphanumeric characters. The probability of such a clash is 1/1300.

       The name mangling (if enabled) allows a file to be copied between UNIX directories from
       Windows/DOS while retaining the long UNIX filename. UNIX files can be renamed to a new
       extension from Windows/DOS and will retain the same basename. Mangled names do not change
       between sessions.

       Default: mangled names = yes

       mangle prefix (G)

           controls the number of prefix characters from the original name used when generating
           the mangled names. A larger value will give a weaker hash and therefore more name
           collisions. The minimum value is 1 and the maximum value is 6.

           mangle prefix is effective only when mangling method is hash2.

           Default: mangle prefix = 1

           Example: mangle prefix = 4

       mangling char (S)

           This controls what character is used as the magic character in name mangling. The
           default is a ´~´ but this may interfere with some software. Use this option to set it
           to whatever you prefer. This is effective only when mangling method is hash.

           Default: mangling char = ~

           Example: mangling char = ^

       mangling method (G)

           controls the algorithm used for the generating the mangled names. Can take two
           different values, "hash" and "hash2". "hash" is the algorithm that was used used in
           Samba for many years and was the default in Samba 2.2.x "hash2" is now the default and
           is newer and considered a better algorithm (generates less collisions) in the names.
           Many Win32 applications store the mangled names and so changing to algorithms must not
           be done lightly as these applications may break unless reinstalled.

           Default: mangling method = hash2

           Example: mangling method = hash

       map acl inherit (S)

           This boolean parameter controls whether smbd(8) will attempt to map the ´inherit´ and
           ´protected´ access control entry flags stored in Windows ACLs into an extended
           attribute called user.SAMBA_PAI. This parameter only takes effect if Samba is being
           run on a platform that supports extended attributes (Linux and IRIX so far) and allows
           the Windows 2000 ACL editor to correctly use inheritance with the Samba POSIX ACL
           mapping code.

           Default: map acl inherit = no

       map archive (S)

           This controls whether the DOS archive attribute should be mapped to the UNIX owner
           execute bit. The DOS archive bit is set when a file has been modified since its last
           backup. One motivation for this option is to keep Samba/your PC from making any file
           it touches from becoming executable under UNIX. This can be quite annoying for shared
           source code, documents, etc...

           Note that this requires the create mask parameter to be set such that owner execute
           bit is not masked out (i.e. it must include 100). See the parameter create mask for
           details.

           Default: map archive = yes

       map hidden (S)

           This controls whether DOS style hidden files should be mapped to the UNIX world
           execute bit.

           Note that this requires the create mask to be set such that the world execute bit is
           not masked out (i.e. it must include 001). See the parameter create mask for details.

           No default

       map readonly (S)

           This controls how the DOS read only attribute should be mapped from a UNIX filesystem.

           This parameter can take three different values, which tell smbd(8) how to display the
           read only attribute on files, where either store dos attributes is set to No, or no
           extended attribute is present. If store dos attributes is set to yes then this
           parameter is ignored. This is a new parameter introduced in Samba version 3.0.21.

           The three settings are :

           ·    Yes - The read only DOS attribute is mapped to the inverse of the user or owner
               write bit in the unix permission mode set. If the owner write bit is not set, the
               read only attribute is reported as being set on the file. If the read only DOS
               attribute is set, Samba sets the owner, group and others write bits to zero. Write
               bits set in an ACL are ignored by Samba. If the read only DOS attribute is unset,
               Samba simply sets the write bit of the owner to one.

           ·    Permissions - The read only DOS attribute is mapped to the effective permissions
               of the connecting user, as evaluated by smbd(8) by reading the unix permissions
               and POSIX ACL (if present). If the connecting user does not have permission to
               modify the file, the read only attribute is reported as being set on the file.

           ·    No - The read only DOS attribute is unaffected by permissions, and can only be
               set by the store dos attributes method. This may be useful for exporting mounted
               CDs.

       Default: map readonly = yes

       map system (S)

           This controls whether DOS style system files should be mapped to the UNIX group
           execute bit.

           Note that this requires the create mask to be set such that the group execute bit is
           not masked out (i.e. it must include 010). See the parameter create mask for details.

           Default: map system = no

       map to guest (G)

           This parameter is only useful in SECURITY = security modes other than security = share
           and security = server - i.e.  user, and domain.

           This parameter can take four different values, which tell smbd(8) what to do with user
           login requests that don´t match a valid UNIX user in some way.

           The four settings are :

           ·   Never - Means user login requests with an invalid password are rejected. This is
               the default.

           ·   Bad User - Means user logins with an invalid password are rejected, unless the
               username does not exist, in which case it is treated as a guest login and mapped
               into the guest account.

           ·   Bad Password - Means user logins with an invalid password are treated as a guest
               login and mapped into the guest account. Note that this can cause problems as it
               means that any user incorrectly typing their password will be silently logged on
               as "guest" - and will not know the reason they cannot access files they think they
               should - there will have been no message given to them that they got their
               password wrong. Helpdesk services will hate you if you set the map to guest
               parameter this way :-).

           ·   Bad Uid - Is only applicable when Samba is configured in some type of domain mode
               security (security = {domain|ads}) and means that user logins which are
               successfully authenticated but which have no valid Unix user account (and smbd is
               unable to create one) should be mapped to the defined guest account. This was the
               default behavior of Samba 2.x releases. Note that if a member server is running
               winbindd, this option should never be required because the nss_winbind library
               will export the Windows domain users and groups to the underlying OS via the Name
               Service Switch interface.

       Note that this parameter is needed to set up "Guest" share services when using security
       modes other than share and server. This is because in these modes the name of the resource
       being requested is not sent to the server until after the server has successfully
       authenticated the client so the server cannot make authentication decisions at the correct
       time (connection to the share) for "Guest" shares. This parameter is not useful with
       security = server as in this security mode no information is returned about whether a user
       logon failed due to a bad username or bad password, the same error is returned from a
       modern server in both cases.

       For people familiar with the older Samba releases, this parameter maps to the old
       compile-time setting of the
        GUEST_SESSSETUP value in local.h.

       Default: map to guest = Never

       Example: map to guest = Bad User

       map untrusted to domain (G)

           If a client connects to smbd using an untrusted domain name, such as BOGUS\user, smbd
           replaces the BOGUS domain with it´s SAM name before attempting to authenticate that
           user. In the case where smbd is acting as a PDC this will be DOMAIN\user. In the case
           where smbd is acting as a domain member server or a standalone server this will be
           WORKSTATION\user.

           In previous versions of Samba (pre 3.4), if smbd was acting as a domain member server,
           the BOGUS domain name would instead be replaced by the primary domain which smbd was a
           member of. In this case authentication would be deferred off to a DC using the
           credentials DOMAIN\user.

           When this parameter is set to yes smbd provides the legacy behavior of mapping
           untrusted domain names to the primary domain. When smbd is not acting as a domain
           member server, this parameter has no effect.

           Default: map untrusted to domain = no

       max connections (S)

           This option allows the number of simultaneous connections to a service to be limited.
           If max connections is greater than 0 then connections will be refused if this number
           of connections to the service are already open. A value of zero mean an unlimited
           number of connections may be made.

           Record lock files are used to implement this feature. The lock files will be stored in
           the directory specified by the lock directory option.

           Default: max connections = 0

           Example: max connections = 10

       max disk size (G)

           This option allows you to put an upper limit on the apparent size of disks. If you set
           this option to 100 then all shares will appear to be not larger than 100 MB in size.

           Note that this option does not limit the amount of data you can put on the disk. In
           the above case you could still store much more than 100 MB on the disk, but if a
           client ever asks for the amount of free disk space or the total disk size then the
           result will be bounded by the amount specified in max disk size.

           This option is primarily useful to work around bugs in some pieces of software that
           can´t handle very large disks, particularly disks over 1GB in size.

           A max disk size of 0 means no limit.

           Default: max disk size = 0

           Example: max disk size = 1000

       max log size (G)

           This option (an integer in kilobytes) specifies the max size the log file should grow
           to. Samba periodically checks the size and if it is exceeded it will rename the file,
           adding a .old extension.

           A size of 0 means no limit.

           Default: max log size = 5000

           Example: max log size = 1000

       max mux (G)

           This option controls the maximum number of outstanding simultaneous SMB operations
           that Samba tells the client it will allow. You should never need to set this
           parameter.

           Default: max mux = 50

       max open files (G)

           This parameter limits the maximum number of open files that one smbd(8) file serving
           process may have open for a client at any one time. The This parameter can be set very
           high (16404) as Samba uses only one bit per unopened file. Setting this parameter
           lower than 16404 will cause Samba to complain and set this value back to the minimum
           of 16404, as Windows 7 depends on this number of open file handles being available.

           The limit of the number of open files is usually set by the UNIX per-process file
           descriptor limit rather than this parameter so you should never need to touch this
           parameter.

           Default: max open files = 16404

       max print jobs (S)

           This parameter limits the maximum number of jobs allowable in a Samba printer queue at
           any given moment. If this number is exceeded, smbd(8) will remote "Out of Space" to
           the client.

           Default: max print jobs = 1000

           Example: max print jobs = 5000

       protocol

           This parameter is a synonym for max protocol.

       max protocol (G)

           The value of the parameter (a string) is the highest protocol level that will be
           supported by the server.

           Possible values are :

           ·   CORE: Earliest version. No concept of user names.

           ·   COREPLUS: Slight improvements on CORE for efficiency.

           ·   LANMAN1: First
                modern version of the protocol. Long filename support.

           ·   LANMAN2: Updates to Lanman1 protocol.

           ·   NT1: Current up to date version of the protocol. Used by Windows NT. Known as
               CIFS.

           ·   SMB2: Re-implementation of the SMB protocol. Used by Windows Vista and newer. The
               Samba implementation of SMB2 is currently marked experimental!

       Normally this option should not be set as the automatic negotiation phase in the SMB
       protocol takes care of choosing the appropriate protocol.

       Default: max protocol = NT1

       Example: max protocol = LANMAN1

       max reported print jobs (S)

           This parameter limits the maximum number of jobs displayed in a port monitor for Samba
           printer queue at any given moment. If this number is exceeded, the excess jobs will
           not be shown. A value of zero means there is no limit on the number of print jobs
           reported.

           Default: max reported print jobs = 0

           Example: max reported print jobs = 1000

       max smbd processes (G)

           This parameter limits the maximum number of smbd(8) processes concurrently running on
           a system and is intended as a stopgap to prevent degrading service to clients in the
           event that the server has insufficient resources to handle more than this number of
           connections. Remember that under normal operating conditions, each user will have an
           smbd(8) associated with him or her to handle connections to all shares from a given
           host.

           Default: max smbd processes = 0

           Example: max smbd processes = 1000

       max stat cache size (G)

           This parameter limits the size in memory of any stat cache being used to speed up case
           insensitive name mappings. It represents the number of kilobyte (1024) units the stat
           cache can use. A value of zero, meaning unlimited, is not advisable due to increased
           memory useage. You should not need to change this parameter.

           Default: max stat cache size = 256

           Example: max stat cache size = 100

       max ttl (G)

           This option tells nmbd(8) what the default ´time to live´ of NetBIOS names should be
           (in seconds) when nmbd is requesting a name using either a broadcast packet or from a
           WINS server. You should never need to change this parameter. The default is 3 days.

           Default: max ttl = 259200

       max wins ttl (G)

           This option tells smbd(8) when acting as a WINS server (wins support = yes) what the
           maximum ´time to live´ of NetBIOS names that nmbd will grant will be (in seconds). You
           should never need to change this parameter. The default is 6 days (518400 seconds).

           Default: max wins ttl = 518400

       max xmit (G)

           This option controls the maximum packet size that will be negotiated by Samba. The
           default is 16644, which matches the behavior of Windows 2000. A value below 2048 is
           likely to cause problems. You should never need to change this parameter from its
           default value.

           Default: max xmit = 16644

           Example: max xmit = 8192

       message command (G)

           This specifies what command to run when the server receives a WinPopup style message.

           This would normally be a command that would deliver the message somehow. How this is
           to be done is up to your imagination.

           An example is:

               message command = csh -c ´xedit %s;rm %s´ &

           This delivers the message using xedit, then removes it afterwards.  NOTE THAT IT IS
           VERY IMPORTANT THAT THIS COMMAND RETURN IMMEDIATELY. That´s why I have the ´&´ on the
           end. If it doesn´t return immediately then your PCs may freeze when sending messages
           (they should recover after 30 seconds, hopefully).

           All messages are delivered as the global guest user. The command takes the standard
           substitutions, although
            %u won´t work (%U may be better in this case).

           Apart from the standard substitutions, some additional ones apply. In particular:

           ·   %s = the filename containing the message.

           ·   %t = the destination that the message was sent to (probably the server name).

           ·   %f = who the message is from.

       You could make this command send mail, or whatever else takes your fancy. Please let us
       know of any really interesting ideas you have.

       Here´s a way of sending the messages as mail to root:

           message command = /bin/mail -s ´message from %f on %m´ root < %s; rm %s

       If you don´t have a message command then the message won´t be delivered and Samba will
       tell the sender there was an error. Unfortunately WfWg totally ignores the error code and
       carries on regardless, saying that the message was delivered.

       If you want to silently delete it then try:

           message command = rm %s

       Default: message command =

       Example: message command = csh -c ´xedit %s; rm %s´ &

       min print space (S)

           This sets the minimum amount of free disk space that must be available before a user
           will be able to spool a print job. It is specified in kilobytes. The default is 0,
           which means a user can always spool a print job.

           Default: min print space = 0

           Example: min print space = 2000

       min protocol (G)

           The value of the parameter (a string) is the lowest SMB protocol dialect than Samba
           will support. Please refer to the max protocol parameter for a list of valid protocol
           names and a brief description of each. You may also wish to refer to the C source code
           in source/smbd/negprot.c for a listing of known protocol dialects supported by
           clients.

           If you are viewing this parameter as a security measure, you should also refer to the
           lanman auth parameter. Otherwise, you should never need to change this parameter.

           Default: min protocol = CORE

           Example: min protocol = NT1

       min receivefile size (G)

           This option changes the behavior of smbd(8) when processing SMBwriteX calls. Any
           incoming SMBwriteX call on a non-signed SMB/CIFS connection greater than this value
           will not be processed in the normal way but will be passed to any underlying kernel
           recvfile or splice system call (if there is no such call Samba will emulate in user
           space). This allows zero-copy writes directly from network socket buffers into the
           filesystem buffer cache, if available. It may improve performance but user testing is
           recommended. If set to zero Samba processes SMBwriteX calls in the normal way. To
           enable POSIX large write support (SMB/CIFS writes up to 16Mb) this option must be
           nonzero. The maximum value is 128k. Values greater than 128k will be silently set to
           128k.

           Note this option will have NO EFFECT if set on a SMB signed connection.

           The default is zero, which diables this option.

           Default: min receivefile size = 0

       min wins ttl (G)

           This option tells nmbd(8) when acting as a WINS server (wins support = yes) what the
           minimum ´time to live´ of NetBIOS names that nmbd will grant will be (in seconds). You
           should never need to change this parameter. The default is 6 hours (21600 seconds).

           Default: min wins ttl = 21600

       msdfs proxy (S)

           This parameter indicates that the share is a stand-in for another CIFS share whose
           location is specified by the value of the parameter. When clients attempt to connect
           to this share, they are redirected to the proxied share using the SMB-Dfs protocol.

           Only Dfs roots can act as proxy shares. Take a look at the msdfs root and host msdfs
           options to find out how to set up a Dfs root share.

           No default

           Example: msdfs proxy = \otherserver\someshare

       msdfs root (S)

           If set to yes, Samba treats the share as a Dfs root and allows clients to browse the
           distributed file system tree rooted at the share directory. Dfs links are specified in
           the share directory by symbolic links of the form
           msdfs:serverA\\shareA,serverB\\shareB and so on. For more information on setting up a
           Dfs tree on Samba, refer to the MSDFS chapter in the Samba3-HOWTO book.

           Default: msdfs root = no

       multicast dns register (G)

           If compiled with proper support for it, Samba will announce itself with multicast DNS
           services like for example provided by the Avahi daemon.

           This parameter allows disabling Samba to register itself.

           Default: multicast dns register = yes

       name cache timeout (G)

           Specifies the number of seconds it takes before entries in samba´s hostname resolve
           cache time out. If the timeout is set to 0. the caching is disabled.

           Default: name cache timeout = 660

           Example: name cache timeout = 0

       name resolve order (G)

           This option is used by the programs in the Samba suite to determine what naming
           services to use and in what order to resolve host names to IP addresses. Its main
           purpose to is to control how netbios name resolution is performed. The option takes a
           space separated string of name resolution options.

           The options are: "lmhosts", "host", "wins" and "bcast". They cause names to be
           resolved as follows:

           ·    lmhosts : Lookup an IP address in the Samba lmhosts file. If the line in lmhosts
               has no name type attached to the NetBIOS name (see the manpage for lmhosts for
               details) then any name type matches for lookup.

           ·    host : Do a standard host name to IP address resolution, using the system
               /etc/hosts, NIS, or DNS lookups. This method of name resolution is operating
               system depended for instance on IRIX or Solaris this may be controlled by the
               /etc/nsswitch.conf file. Note that this method is used only if the NetBIOS name
               type being queried is the 0x20 (server) name type or 0x1c (domain controllers).
               The latter case is only useful for active directory domains and results in a DNS
               query for the SRV RR entry matching _ldap._tcp.domain.

           ·   wins : Query a name with the IP address listed in the WINSSERVER parameter. If no
               WINS server has been specified this method will be ignored.

           ·   bcast : Do a broadcast on each of the known local interfaces listed in the
               interfaces parameter. This is the least reliable of the name resolution methods as
               it depends on the target host being on a locally connected subnet.

       The example below will cause the local lmhosts file to be examined first, followed by a
       broadcast attempt, followed by a normal system hostname lookup.

       When Samba is functioning in ADS security mode (security = ads) it is advised to use
       following settings for name resolve order:

       name resolve order = wins bcast

       DC lookups will still be done via DNS, but fallbacks to netbios names will not inundate
       your DNS servers with needless querys for DOMAIN<0x1c> lookups.

       Default: name resolve order = lmhosts host wins bcast

       Example: name resolve order = lmhosts bcast host

       ncalrpc dir (G)

           This directory will hold a series of named pipes to allow RPC over inter-process
           communication.

           .       This will allow Samba and other unix processes to interact over DCE/RPC
           without using TCP/IP. Additionally a sub-directory ´np´ has restricted permissions,
           and allows a trusted communication channel between Samba processes

           Default: ncalrpc dir = ${prefix}/var/ncalrpc

           Example: ncalrpc dir = /var/run/samba/ncalrpc

       netbios aliases (G)

           This is a list of NetBIOS names that nmbd will advertise as additional names by which
           the Samba server is known. This allows one machine to appear in browse lists under
           multiple names. If a machine is acting as a browse server or logon server none of
           these names will be advertised as either browse server or logon servers, only the
           primary name of the machine will be advertised with these capabilities.

           Default: netbios aliases =  # empty string (no additional names)

           Example: netbios aliases = TEST TEST1 TEST2

       netbios name (G)

           This sets the NetBIOS name by which a Samba server is known. By default it is the same
           as the first component of the host´s DNS name. If a machine is a browse server or
           logon server this name (or the first component of the hosts DNS name) will be the name
           that these services are advertised under.

           There is a bug in Samba-3 that breaks operation of browsing and access to shares if
           the netbios name is set to the literal name PIPE. To avoid this problem, do not name
           your Samba-3 server PIPE.

           Default: netbios name =  # machine DNS name

           Example: netbios name = MYNAME

       netbios scope (G)

           This sets the NetBIOS scope that Samba will operate under. This should not be set
           unless every machine on your LAN also sets this value.

           Default: netbios scope =

       nis homedir (G)

           Get the home share server from a NIS map. For UNIX systems that use an automounter,
           the user´s home directory will often be mounted on a workstation on demand from a
           remote server.

           When the Samba logon server is not the actual home directory server, but is mounting
           the home directories via NFS then two network hops would be required to access the
           users home directory if the logon server told the client to use itself as the SMB
           server for home directories (one over SMB and one over NFS). This can be very slow.

           This option allows Samba to return the home share as being on a different server to
           the logon server and as long as a Samba daemon is running on the home directory
           server, it will be mounted on the Samba client directly from the directory server.
           When Samba is returning the home share to the client, it will consult the NIS map
           specified in homedir map and return the server listed there.

           Note that for this option to work there must be a working NIS system and the Samba
           server with this option must also be a logon server.

           Default: nis homedir = no

       nmbd bind explicit broadcast (G)

           This option causes nmbd(8) to explicitly bind to the broadcast address of the local
           subnets. This is needed to make nmbd work correctly in combination with the socket
           address option. You should not need to unset this option.

           Default: nmbd bind explicit broadcast = yes

       nt acl support (S)

           This boolean parameter controls whether smbd(8) will attempt to map UNIX permissions
           into Windows NT access control lists. The UNIX permissions considered are the the
           traditional UNIX owner and group permissions, as well as POSIX ACLs set on any files
           or directories. This parameter was formally a global parameter in releases prior to
           2.2.2.

           Default: nt acl support = yes

       ntlm auth (G)

           This parameter determines whether or not smbd(8) will attempt to authenticate users
           using the NTLM encrypted password response. If disabled, either the lanman password
           hash or an NTLMv2 response will need to be sent by the client.

           If this option, and lanman auth are both disabled, then only NTLMv2 logins will be
           permited. Not all clients support NTLMv2, and most will require special configuration
           to use it.

           Default: ntlm auth = yes

       nt pipe support (G)

           This boolean parameter controls whether smbd(8) will allow Windows NT clients to
           connect to the NT SMB specific IPC$ pipes. This is a developer debugging option and
           can be left alone.

           Default: nt pipe support = yes

       nt status support (G)

           This boolean parameter controls whether smbd(8) will negotiate NT specific status
           support with Windows NT/2k/XP clients. This is a developer debugging option and should
           be left alone. If this option is set to no then Samba offers exactly the same DOS
           error codes that versions prior to Samba 2.2.3 reported.

           You should not need to ever disable this parameter.

           Default: nt status support = yes

       null passwords (G)

           Allow or disallow client access to accounts that have null passwords.

           See also smbpasswd(5).

           Default: null passwords = no

       obey pam restrictions (G)

           When Samba 3.0 is configured to enable PAM support (i.e. --with-pam), this parameter
           will control whether or not Samba should obey PAM´s account and session management
           directives. The default behavior is to use PAM for clear text authentication only and
           to ignore any account or session management. Note that Samba always ignores PAM for
           authentication in the case of encrypt passwords = yes. The reason is that PAM modules
           cannot support the challenge/response authentication mechanism needed in the presence
           of SMB password encryption.

           Default: obey pam restrictions = no

       only user (S)

           This is a boolean option that controls whether connections with usernames not in the
           user list will be allowed. By default this option is disabled so that a client can
           supply a username to be used by the server. Enabling this parameter will force the
           server to only use the login names from the user list and is only really useful in
           security = share level security.

           Note that this also means Samba won´t try to deduce usernames from the service name.
           This can be annoying for the [homes] section. To get around this you could use user =
           %S which means your user list will be just the service name, which for home
           directories is the name of the user.

           Default: only user = no

       oplock break wait time (G)

           This is a tuning parameter added due to bugs in both Windows 9x and WinNT. If Samba
           responds to a client too quickly when that client issues an SMB that can cause an
           oplock break request, then the network client can fail and not respond to the break
           request. This tuning parameter (which is set in milliseconds) is the amount of time
           Samba will wait before sending an oplock break request to such (broken) clients.

               Warning
               DO NOT CHANGE THIS PARAMETER UNLESS YOU HAVE READ AND UNDERSTOOD THE SAMBA OPLOCK
               CODE.
           Default: oplock break wait time = 0

       oplock contention limit (S)

           This is a very advanced smbd(8) tuning option to improve the efficiency of the
           granting of oplocks under multiple client contention for the same file.

           In brief it specifies a number, which causes smbd(8)not to grant an oplock even when
           requested if the approximate number of clients contending for an oplock on the same
           file goes over this limit. This causes smbd to behave in a similar way to Windows NT.

               Warning
               DO NOT CHANGE THIS PARAMETER UNLESS YOU HAVE READ AND UNDERSTOOD THE SAMBA OPLOCK
               CODE.
           Default: oplock contention limit = 2

       oplocks (S)

           This boolean option tells smbd whether to issue oplocks (opportunistic locks) to file
           open requests on this share. The oplock code can dramatically (approx. 30% or more)
           improve the speed of access to files on Samba servers. It allows the clients to
           aggressively cache files locally and you may want to disable this option for
           unreliable network environments (it is turned on by default in Windows NT Servers).

           Oplocks may be selectively turned off on certain files with a share. See the veto
           oplock files parameter. On some systems oplocks are recognized by the underlying
           operating system. This allows data synchronization between all access to oplocked
           files, whether it be via Samba or NFS or a local UNIX process. See the kernel oplocks
           parameter for details.

           Default: oplocks = yes

       os2 driver map (G)

           The parameter is used to define the absolute path to a file containing a mapping of
           Windows NT printer driver names to OS/2 printer driver names. The format is:

           <nt driver name> = <os2 driver name>.<device name>

           For example, a valid entry using the HP LaserJet 5 printer driver would appear as HP
           LaserJet 5L = LASERJET.HP LaserJet 5L.

           The need for the file is due to the printer driver namespace problem described in the
           chapter on Classical Printing in the Samba3-HOWTO book. For more details on OS/2
           clients, please refer to chapter on other clients in the Samba3-HOWTO book.

           Default: os2 driver map =

       os level (G)

           This integer value controls what level Samba advertises itself as for browse
           elections. The value of this parameter determines whether nmbd(8) has a chance of
           becoming a local master browser for the workgroup in the local broadcast area.

            Note: By default, Samba will win a local master browsing election over all Microsoft
           operating systems except a Windows NT 4.0/2000 Domain Controller. This means that a
           misconfigured Samba host can effectively isolate a subnet for browsing purposes. This
           parameter is largely auto-configured in the Samba-3 release series and it is seldom
           necessary to manually override the default setting. Please refer to the chapter on
           Network Browsing in the Samba-3 HOWTO document for further information regarding the
           use of this parameter.  Note: The maximum value for this parameter is 255. If you use
           higher values, counting will start at 0!

           Default: os level = 20

           Example: os level = 65

       pam password change (G)

           With the addition of better PAM support in Samba 2.2, this parameter, it is possible
           to use PAM´s password change control flag for Samba. If enabled, then PAM will be used
           for password changes when requested by an SMB client instead of the program listed in
           passwd program. It should be possible to enable this without changing your passwd chat
           parameter for most setups.

           Default: pam password change = no

       panic action (G)

           This is a Samba developer option that allows a system command to be called when either
           smbd(8) or nmbd(8) crashes. This is usually used to draw attention to the fact that a
           problem occurred.

           Default: panic action =

           Example: panic action = "/bin/sleep 90000"

       paranoid server security (G)

           Some version of NT 4.x allow non-guest users with a bad passowrd. When this option is
           enabled, samba will not use a broken NT 4.x server as password server, but instead
           complain to the logs and exit.

           Disabling this option prevents Samba from making this check, which involves
           deliberatly attempting a bad logon to the remote server.

           Default: paranoid server security = yes

       passdb backend (G)

           This option allows the administrator to chose which backend will be used for storing
           user and possibly group information. This allows you to swap between different storage
           mechanisms without recompile.

           The parameter value is divided into two parts, the backend´s name, and a ´location´
           string that has meaning only to that particular backed. These are separated by a :
           character.

           Available backends can include:

           ·   smbpasswd - The old plaintext passdb backend. Some Samba features will not work if
               this passdb backend is used. Takes a path to the smbpasswd file as an optional
               argument.

           ·   tdbsam - The TDB based password storage backend. Takes a path to the TDB as an
               optional argument (defaults to passdb.tdb in the private dir directory.

           ·   ldapsam - The LDAP based passdb backend. Takes an LDAP URL as an optional argument
               (defaults to ldap://localhost)

               LDAP connections should be secured where possible. This may be done using either
               Start-TLS (see ldap ssl) or by specifying ldaps:// in the URL argument.

               Multiple servers may also be specified in double-quotes. Whether multiple servers
               are supported or not and the exact syntax depends on the LDAP library you use.

            Examples of use are:

           passdb backend = tdbsam:/etc/samba/private/passdb.tdb

           or multi server LDAP URL with OpenLDAP library:

           passdb backend = ldapsam:"ldap://ldap-1.example.com ldap://ldap-2.example.com"

           or multi server LDAP URL with Netscape based LDAP library:

           passdb backend = ldapsam:"ldap://ldap-1.example.com ldap-2.example.com"

       Default: passdb backend = tdbsam

       passdb expand explicit (G)

           This parameter controls whether Samba substitutes %-macros in the passdb fields if
           they are explicitly set. We used to expand macros here, but this turned out to be a
           bug because the Windows client can expand a variable %G_osver% in which %G would have
           been substituted by the user´s primary group.

           Default: passdb expand explicit = no

       passwd chat debug (G)

           This boolean specifies if the passwd chat script parameter is run in debug mode. In
           this mode the strings passed to and received from the passwd chat are printed in the
           smbd(8) log with a debug level of 100. This is a dangerous option as it will allow
           plaintext passwords to be seen in the smbd log. It is available to help Samba admins
           debug their passwd chat scripts when calling the passwd program and should be turned
           off after this has been done. This option has no effect if the pam password change
           parameter is set. This parameter is off by default.

           Default: passwd chat debug = no

       passwd chat timeout (G)

           This integer specifies the number of seconds smbd will wait for an initial answer from
           a passwd chat script being run. Once the initial answer is received the subsequent
           answers must be received in one tenth of this time. The default it two seconds.

           Default: passwd chat timeout = 2

       passwd chat (G)

           This string controls the "chat" conversation that takes places between smbd(8) and the
           local password changing program to change the user´s password. The string describes a
           sequence of response-receive pairs that smbd(8) uses to determine what to send to the
           passwd program and what to expect back. If the expected output is not received then
           the password is not changed.

           This chat sequence is often quite site specific, depending on what local methods are
           used for password control (such as NIS etc).

           Note that this parameter only is used if the unix password sync parameter is set to
           yes. This sequence is then called AS ROOT when the SMB password in the smbpasswd file
           is being changed, without access to the old password cleartext. This means that root
           must be able to reset the user´s password without knowing the text of the previous
           password. In the presence of NIS/YP, this means that the passwd program must be
           executed on the NIS master.

           The string can contain the macro %n which is substituted for the new password. The old
           passsword (%o) is only available when encrypt passwords has been disabled. The chat
           sequence can also contain the standard macros \n, \r, \t and \s to give line-feed,
           carriage-return, tab and space. The chat sequence string can also contain a ´*´ which
           matches any sequence of characters. Double quotes can be used to collect strings with
           spaces in them into a single string.

           If the send string in any part of the chat sequence is a full stop ".", then no string
           is sent. Similarly, if the expect string is a full stop then no string is expected.

           If the pam password change parameter is set to yes, the chat pairs may be matched in
           any order, and success is determined by the PAM result, not any particular output. The
           \n macro is ignored for PAM conversions.

           Default: passwd chat = *new*password* %n\n*new*password* %n\n *changed*

           Example: passwd chat = "*Enter NEW password*" %n\n "*Reenter NEW password*" %n\n
           "*Password changed*"

       passwd program (G)

           The name of a program that can be used to set UNIX user passwords. Any occurrences of
           %u will be replaced with the user name. The user name is checked for existence before
           calling the password changing program.

           Also note that many passwd programs insist in reasonable passwords, such as a minimum
           length, or the inclusion of mixed case chars and digits. This can pose a problem as
           some clients (such as Windows for Workgroups) uppercase the password before sending
           it.

           Note that if the unix password sync parameter is set to yes then this program is
           called AS ROOT before the SMB password in the smbpasswd file is changed. If this UNIX
           password change fails, then smbd will fail to change the SMB password also (this is by
           design).

           If the unix password sync parameter is set this parameter MUST USE ABSOLUTE PATHS for
           ALL programs called, and must be examined for security implications. Note that by
           default unix password sync is set to no.

           Default: passwd program =

           Example: passwd program = /bin/passwd %u

       password level (G)

           Some client/server combinations have difficulty with mixed-case passwords. One
           offending client is Windows for Workgroups, which for some reason forces passwords to
           upper case when using the LANMAN1 protocol, but leaves them alone when using COREPLUS!
           Another problem child is the Windows 95/98 family of operating systems. These clients
           upper case clear text passwords even when NT LM 0.12 selected by the protocol
           negotiation request/response.

           This deprecated parameter defines the maximum number of characters that may be upper
           case in passwords.

           For example, say the password given was "FRED". If
            password level is set to 1, the following combinations would be tried if "FRED"
           failed:

           "Fred", "fred", "fRed", "frEd","freD"

           If password level was set to 2, the following combinations would also be tried:

           "FRed", "FrEd", "FreD", "fREd", "fReD", "frED", ..

           And so on.

           The higher value this parameter is set to the more likely it is that a mixed case
           password will be matched against a single case password. However, you should be aware
           that use of this parameter reduces security and increases the time taken to process a
           new connection.

           A value of zero will cause only two attempts to be made - the password as is and the
           password in all-lower case.

           This parameter is used only when using plain-text passwords. It is not at all used
           when encrypted passwords as in use (that is the default since samba-3.0.0). Use this
           only when encrypt passwords = No.

           Default: password level = 0

           Example: password level = 4

       password server (G)

           By specifying the name of another SMB server or Active Directory domain controller
           with this option, and using security = [ads|domain|server] it is possible to get Samba
           to do all its username/password validation using a specific remote server.

           If the security parameter is set to domain or ads, then this option should not be
           used, as the default ´*´ indicates to Samba to determine the best DC to contact
           dynamically, just as all other hosts in an AD domain do. This allows the domain to be
           maintained without modification to the smb.conf file. The cryptograpic protection on
           the authenticated RPC calls used to verify passwords ensures that this default is
           safe.

           It is strongly recommended that you use the default of ´*´, however if in your
           particular environment you have reason to specify a particular DC list, then the list
           of machines in this option must be a list of names or IP addresses of Domain
           controllers for the Domain. If you use the default of ´*´, or list several hosts in
           the password server option then smbd will try each in turn till it finds one that
           responds. This is useful in case your primary server goes down.

           If the list of servers contains both names/IP´s and the ´*´ character, the list is
           treated as a list of preferred domain controllers, but an auto lookup of all remaining
           DC´s will be added to the list as well. Samba will not attempt to optimize this list
           by locating the closest DC.

           If parameter is a name, it is looked up using the parameter name resolve order and so
           may resolved by any method and order described in that parameter.

           If the security parameter is set to server, these additional restrictions apply:

           ·   You may list several password servers in the password server parameter, however if
               an smbd makes a connection to a password server, and then the password server
               fails, no more users will be able to be authenticated from this smbd. This is a
               restriction of the SMB/CIFS protocol when in security = server mode and cannot be
               fixed in Samba.

           ·   You will have to ensure that your users are able to login from the Samba server,
               as when in security = server mode the network logon will appear to come from the
               Samba server rather than from the users workstation.

           ·   The client must not select NTLMv2 authentication.

           ·   The password server must be a machine capable of using the "LM1.2X002" or the "NT
               LM 0.12" protocol, and it must be in user level security mode.

           ·   Using a password server means your UNIX box (running Samba) is only as secure as
               (a host masqurading as) your password server.  DO NOT CHOOSE A PASSWORD SERVER
               THAT YOU DON´T COMPLETELY TRUST.

           ·   Never point a Samba server at itself for password serving. This will cause a loop
               and could lock up your Samba server!

           ·   The name of the password server takes the standard substitutions, but probably the
               only useful one is %m , which means the Samba server will use the incoming client
               as the password server. If you use this then you better trust your clients, and
               you had better restrict them with hosts allow!

       Default: password server = *

       Example: password server = NT-PDC, NT-BDC1, NT-BDC2, *

       Example: password server = windc.mydomain.com:389 192.168.1.101 *

       directory

           This parameter is a synonym for path.

       path (S)

           This parameter specifies a directory to which the user of the service is to be given
           access. In the case of printable services, this is where print data will spool prior
           to being submitted to the host for printing.

           For a printable service offering guest access, the service should be readonly and the
           path should be world-writeable and have the sticky bit set. This is not mandatory of
           course, but you probably won´t get the results you expect if you do otherwise.

           Any occurrences of %u in the path will be replaced with the UNIX username that the
           client is using on this connection. Any occurrences of %m will be replaced by the
           NetBIOS name of the machine they are connecting from. These replacements are very
           useful for setting up pseudo home directories for users.

           Note that this path will be based on root dir if one was specified.

           Default: path =

           Example: path = /home/fred

       perfcount module (G)

           This parameter specifies the perfcount backend to be used when monitoring SMB
           operations. Only one perfcount module may be used, and it must implement all of the
           apis contained in the smb_perfcount_handler structure defined in smb.h.

           No default

       pid directory (G)

           This option specifies the directory where pid files will be placed.

           Default: pid directory = ${prefix}/var/locks

           Example: pid directory = pid directory = /var/run/

       posix locking (S)

           The smbd(8) daemon maintains an database of file locks obtained by SMB clients. The
           default behavior is to map this internal database to POSIX locks. This means that file
           locks obtained by SMB clients are consistent with those seen by POSIX compliant
           applications accessing the files via a non-SMB method (e.g. NFS or local file access).
           It is very unlikely that you need to set this parameter to "no", unless you are
           sharing from an NFS mount, which is not a good idea in the first place.

           Default: posix locking = yes

       postexec (S)

           This option specifies a command to be run whenever the service is disconnected. It
           takes the usual substitutions. The command may be run as the root on some systems.

           An interesting example may be to unmount server resources:

           postexec = /etc/umount /cdrom

           Default: postexec =

           Example: postexec = echo \"%u disconnected from %S from %m (%I)\" >> /tmp/log

       preexec close (S)

           This boolean option controls whether a non-zero return code from preexec should close
           the service being connected to.

           Default: preexec close = no

       exec

           This parameter is a synonym for preexec.

       preexec (S)

           This option specifies a command to be run whenever the service is connected to. It
           takes the usual substitutions.

           An interesting example is to send the users a welcome message every time they log in.
           Maybe a message of the day? Here is an example:

           preexec = csh -c ´echo \"Welcome to %S!\" | /usr/local/samba/bin/smbclient -M %m -I
           %I´ &

           Of course, this could get annoying after a while :-)

           See also preexec close and postexec.

           Default: preexec =

           Example: preexec = echo \"%u connected to %S from %m (%I)\" >> /tmp/log

       prefered master

           This parameter is a synonym for preferred master.

       preferred master (G)

           This boolean parameter controls if nmbd(8) is a preferred master browser for its
           workgroup.

           If this is set to yes, on startup, nmbd will force an election, and it will have a
           slight advantage in winning the election. It is recommended that this parameter is
           used in conjunction with domain master = yes, so that nmbd can guarantee becoming a
           domain master.

           Use this option with caution, because if there are several hosts (whether Samba
           servers, Windows 95 or NT) that are preferred master browsers on the same subnet, they
           will each periodically and continuously attempt to become the local master browser.
           This will result in unnecessary broadcast traffic and reduced browsing capabilities.

           Default: preferred master = auto

       preload modules (G)

           This is a list of paths to modules that should be loaded into smbd before a client
           connects. This improves the speed of smbd when reacting to new connections somewhat.

           Default: preload modules =

           Example: preload modules = /usr/lib/samba/passdb/mysql.so

       auto services

           This parameter is a synonym for preload.

       preload (G)

           This is a list of services that you want to be automatically added to the browse
           lists. This is most useful for homes and printers services that would otherwise not be
           visible.

           Note that if you just want all printers in your printcap file loaded then the load
           printers option is easier.

           Default: preload =

           Example: preload = fred lp colorlp

       preserve case (S)

           This controls if new filenames are created with the case that the client passes, or if
           they are forced to be the default case.

           See the section on NAME MANGLING for a fuller discussion.

           Default: preserve case = yes

       print ok

           This parameter is a synonym for printable.

       printable (S)

           If this parameter is yes, then clients may open, write to and submit spool files on
           the directory specified for the service.

           Note that a printable service will ALWAYS allow writing to the service path (user
           privileges permitting) via the spooling of print data. The read only parameter
           controls only non-printing access to the resource.

           Default: printable = no

       printcap cache time (G)

           This option specifies the number of seconds before the printing subsystem is again
           asked for the known printers.

           Setting this parameter to 0 disables any rescanning for new or removed printers after
           the initial startup.

           Default: printcap cache time = 750

           Example: printcap cache time = 600

       printcap

           This parameter is a synonym for printcap name.

       printcap name (G)

           This parameter may be used to override the compiled-in default printcap name used by
           the server (usually /etc/printcap). See the discussion of the [printers] section above
           for reasons why you might want to do this.

           To use the CUPS printing interface set printcap name = cups. This should be
           supplemented by an addtional setting printing = cups in the [global] section.
           printcap name = cups will use the "dummy" printcap created by CUPS, as specified in
           your CUPS configuration file.

           On System V systems that use lpstat to list available printers you can use printcap
           name = lpstat to automatically obtain lists of available printers. This is the default
           for systems that define SYSV at configure time in Samba (this includes most System V
           based systems). If
            printcap name is set to lpstat on these systems then Samba will launch lpstat -v and
           attempt to parse the output to obtain a printer list.

           A minimal printcap file would look something like this:

               print1|My Printer 1
               print2|My Printer 2
               print3|My Printer 3
               print4|My Printer 4
               print5|My Printer 5

           where the ´|´ separates aliases of a printer. The fact that the second alias has a
           space in it gives a hint to Samba that it´s a comment.

               Note
               Under AIX the default printcap name is /etc/qconfig. Samba will assume the file is
               in AIX qconfig format if the string qconfig appears in the printcap filename.
           Default: printcap name = /etc/printcap

           Example: printcap name = /etc/myprintcap

       print command (S)

           After a print job has finished spooling to a service, this command will be used via a
           system() call to process the spool file. Typically the command specified will submit
           the spool file to the host´s printing subsystem, but there is no requirement that this
           be the case. The server will not remove the spool file, so whatever command you
           specify should remove the spool file when it has been processed, otherwise you will
           need to manually remove old spool files.

           The print command is simply a text string. It will be used verbatim after macro
           substitutions have been made:

           %s, %f - the path to the spool file name

           %p - the appropriate printer name

           %J - the job name as transmitted by the client.

           %c - The number of printed pages of the spooled job (if known).

           %z - the size of the spooled print job (in bytes)

           The print command MUST contain at least one occurrence of %s or %f - the %p is
           optional. At the time a job is submitted, if no printer name is supplied the %p will
           be silently removed from the printer command.

           If specified in the [global] section, the print command given will be used for any
           printable service that does not have its own print command specified.

           If there is neither a specified print command for a printable service nor a global
           print command, spool files will be created but not processed and (most importantly)
           not removed.

           Note that printing may fail on some UNIXes from the nobody account. If this happens
           then create an alternative guest account that can print and set the guest account in
           the [global] section.

           You can form quite complex print commands by realizing that they are just passed to a
           shell. For example the following will log a print job, print the file, then remove it.
           Note that ´;´ is the usual separator for command in shell scripts.

           print command = echo Printing %s >> /tmp/print.log; lpr -P %p %s; rm %s

           You may have to vary this command considerably depending on how you normally print
           files on your system. The default for the parameter varies depending on the setting of
           the printing parameter.

           Default: For printing = BSD, AIX, QNX, LPRNG or PLP :

           print command = lpr -r -P%p %s

           For printing = SYSV or HPUX :

           print command = lp -c -d%p %s; rm %s

           For printing = SOFTQ :

           print command = lp -d%p -s %s; rm %s

           For printing = CUPS : If SAMBA is compiled against libcups, then printcap = cups uses
           the CUPS API to submit jobs, etc. Otherwise it maps to the System V commands with the
           -oraw option for printing, i.e. it uses lp -c -d%p -oraw; rm %s. With printing = cups,
           and if SAMBA is compiled against libcups, any manually set print command will be
           ignored.

           No default

           Example: print command = /usr/local/samba/bin/myprintscript %p %s

       printer admin (S)

           This lists users who can do anything to printers via the remote administration
           interfaces offered by MS-RPC (usually using a NT workstation). This parameter can be
           set per-share or globally. Note: The root user always has admin rights. Use caution
           with use in the global stanza as this can cause side effects.

           This parameter has been marked deprecated in favor of using the
           SePrintOperatorPrivilege and individual print security descriptors. It will be removed
           in a future release.

           Default: printer admin =

           Example: printer admin = admin, @staff

       printer

           This parameter is a synonym for printer name.

       printer name (S)

           This parameter specifies the name of the printer to which print jobs spooled through a
           printable service will be sent.

           If specified in the [global] section, the printer name given will be used for any
           printable service that does not have its own printer name specified.

           The default value of the printer name may be lp on many systems.

           Default: printer name = none

           Example: printer name = laserwriter

       printing (S)

           This parameters controls how printer status information is interpreted on your system.
           It also affects the default values for the print command, lpq command, lppause command
           , lpresume command, and lprm command if specified in the [global] section.

           Currently nine printing styles are supported. They are BSD, AIX, LPRNG, PLP, SYSV,
           HPUX, QNX, SOFTQ, and CUPS.

           To see what the defaults are for the other print commands when using the various
           options use the testparm(1) program.

           This option can be set on a per printer basis. Please be aware however, that you must
           place any of the various printing commands (e.g. print command, lpq command, etc...)
           after defining the value for the printing option since it will reset the printing
           commands to default values.

           See also the discussion in the [printers] section.

           Default: printing = Depends on the operating system, see testparm -v.

       printjob username (S)

           This parameter specifies which user information will be passed to the printing system.
           Usually, the username is sent, but in some cases, e.g. the domain prefix is useful,
           too.

           Default: printjob username = %U

           Example: printjob username = %D\%U

       print notify backchannel (S)

           Windows print clients can update print queue status by expecting the server to open a
           backchannel SMB connection to them. Due to client firewall settings this can cause
           considerable timeouts and will often fail, as there is no guarantee the client is even
           running an SMB server. By setting this parameter to no the Samba print server will not
           try to connect back to clients and treat corresponding requests as if the connection
           back to the client failed. The default setting of yes causes smbd to attempt this
           connection.

           Default: print notify backchannel = yes

       private dir (G)

           This parameters defines the directory smbd will use for storing such files as
           smbpasswd and secrets.tdb.

           Default: private dir = ${prefix}/private

       profile acls (S)

           This boolean parameter was added to fix the problems that people have been having with
           storing user profiles on Samba shares from Windows 2000 or Windows XP clients. New
           versions of Windows 2000 or Windows XP service packs do security ACL checking on the
           owner and ability to write of the profile directory stored on a local workstation when
           copied from a Samba share.

           When not in domain mode with winbindd then the security info copied onto the local
           workstation has no meaning to the logged in user (SID) on that workstation so the
           profile storing fails. Adding this parameter onto a share used for profile storage
           changes two things about the returned Windows ACL. Firstly it changes the owner and
           group owner of all reported files and directories to be BUILTIN\\Administrators,
           BUILTIN\\Users respectively (SIDs S-1-5-32-544, S-1-5-32-545). Secondly it adds an ACE
           entry of "Full Control" to the SID BUILTIN\\Users to every returned ACL. This will
           allow any Windows 2000 or XP workstation user to access the profile.

           Note that if you have multiple users logging on to a workstation then in order to
           prevent them from being able to access each others profiles you must remove the
           "Bypass traverse checking" advanced user right. This will prevent access to other
           users profile directories as the top level profile directory (named after the user) is
           created by the workstation profile code and has an ACL restricting entry to the
           directory tree to the owning user.

           Default: profile acls = no

       queuepause command (S)

           This parameter specifies the command to be executed on the server host in order to
           pause the printer queue.

           This command should be a program or script which takes a printer name as its only
           parameter and stops the printer queue, such that no longer jobs are submitted to the
           printer.

           This command is not supported by Windows for Workgroups, but can be issued from the
           Printers window under Windows 95 and NT.

           If a %p is given then the printer name is put in its place. Otherwise it is placed at
           the end of the command.

           Note that it is good practice to include the absolute path in the command as the PATH
           may not be available to the server.

           No default

           Example: queuepause command = disable %p

       queueresume command (S)

           This parameter specifies the command to be executed on the server host in order to
           resume the printer queue. It is the command to undo the behavior that is caused by the
           previous parameter (queuepause command).

           This command should be a program or script which takes a printer name as its only
           parameter and resumes the printer queue, such that queued jobs are resubmitted to the
           printer.

           This command is not supported by Windows for Workgroups, but can be issued from the
           Printers window under Windows 95 and NT.

           If a %p is given then the printer name is put in its place. Otherwise it is placed at
           the end of the command.

           Note that it is good practice to include the absolute path in the command as the PATH
           may not be available to the server.

           Default: queueresume command =

           Example: queueresume command = enable %p

       read list (S)

           This is a list of users that are given read-only access to a service. If the
           connecting user is in this list then they will not be given write access, no matter
           what the read only option is set to. The list can include group names using the syntax
           described in the invalid users parameter.

           This parameter will not work with the security = share in Samba 3.0. This is by
           design.

           Default: read list =

           Example: read list = mary, @students

       read only (S)

           An inverted synonym is writeable.

           If this parameter is yes, then users of a service may not create or modify files in
           the service´s directory.

           Note that a printable service (printable = yes) will ALWAYS allow writing to the
           directory (user privileges permitting), but only via spooling operations.

           Default: read only = yes

       read raw (G)

           This parameter controls whether or not the server will support the raw read SMB
           requests when transferring data to clients.

           If enabled, raw reads allow reads of 65535 bytes in one packet. This typically
           provides a major performance benefit.

           However, some clients either negotiate the allowable block size incorrectly or are
           incapable of supporting larger block sizes, and for these clients you may need to
           disable raw reads.

           In general this parameter should be viewed as a system tuning tool and left severely
           alone.

           Default: read raw = yes

       realm (G)

           This option specifies the kerberos realm to use. The realm is used as the ADS
           equivalent of the NT4 domain. It is usually set to the DNS name of the kerberos
           server.

           Default: realm =

           Example: realm = mysambabox.mycompany.com

       registry shares (G)

           This turns on or off support for share definitions read from registry. Shares defined
           in smb.conf take precedence over shares with the same name defined in registry. See
           the section on registry-based configuration for details.

           Note that this parameter defaults to no, but it is set to yes when config backend is
           set to registry.

           Default: registry shares = no

           Example: registry shares = yes

       remote announce (G)

           This option allows you to setup nmbd(8) to periodically announce itself to arbitrary
           IP addresses with an arbitrary workgroup name.

           This is useful if you want your Samba server to appear in a remote workgroup for which
           the normal browse propagation rules don´t work. The remote workgroup can be anywhere
           that you can send IP packets to.

           For example:

               remote announce = 192.168.2.255/SERVERS 192.168.4.255/STAFF

           the above line would cause nmbd to announce itself to the two given IP addresses using
           the given workgroup names. If you leave out the workgroup name, then the one given in
           the workgroup parameter is used instead.

           The IP addresses you choose would normally be the broadcast addresses of the remote
           networks, but can also be the IP addresses of known browse masters if your network
           config is that stable.

           See the chapter on Network Browsing in the Samba-HOWTO book.

           Default: remote announce =

       remote browse sync (G)

           This option allows you to setup nmbd(8) to periodically request synchronization of
           browse lists with the master browser of a Samba server that is on a remote segment.
           This option will allow you to gain browse lists for multiple workgroups across routed
           networks. This is done in a manner that does not work with any non-Samba servers.

           This is useful if you want your Samba server and all local clients to appear in a
           remote workgroup for which the normal browse propagation rules don´t work. The remote
           workgroup can be anywhere that you can send IP packets to.

           For example:

               remote browse sync = 192.168.2.255 192.168.4.255

           the above line would cause nmbd to request the master browser on the specified subnets
           or addresses to synchronize their browse lists with the local server.

           The IP addresses you choose would normally be the broadcast addresses of the remote
           networks, but can also be the IP addresses of known browse masters if your network
           config is that stable. If a machine IP address is given Samba makes NO attempt to
           validate that the remote machine is available, is listening, nor that it is in fact
           the browse master on its segment.

           The remote browse sync may be used on networks where there is no WINS server, and may
           be used on disjoint networks where each network has its own WINS server.

           Default: remote browse sync =

       rename user script (G)

           This is the full pathname to a script that will be run as root by smbd(8) under
           special circumstances described below.

           When a user with admin authority or SeAddUserPrivilege rights renames a user (e.g.:
           from the NT4 User Manager for Domains), this script will be run to rename the POSIX
           user. Two variables, %uold and %unew, will be substituted with the old and new
           usernames, respectively. The script should return 0 upon successful completion, and
           nonzero otherwise.

               Note
               The script has all responsibility to rename all the necessary data that is
               accessible in this posix method. This can mean different requirements for
               different backends. The tdbsam and smbpasswd backends will take care of the
               contents of their respective files, so the script is responsible only for changing
               the POSIX username, and other data that may required for your circumstances, such
               as home directory. Please also consider whether or not you need to rename the
               actual home directories themselves. The ldapsam backend will not make any changes,
               because of the potential issues with renaming the LDAP naming attribute. In this
               case the script is responsible for changing the attribute that samba uses (uid)
               for locating users, as well as any data that needs to change for other
               applications using the same directory.
           Default: rename user script = no

       reset on zero vc (G)

           This boolean option controls whether an incoming session setup should kill other
           connections coming from the same IP. This matches the default Windows 2003 behaviour.
           Setting this parameter to yes becomes necessary when you have a flaky network and
           windows decides to reconnect while the old connection still has files with share modes
           open. These files become inaccessible over the new connection. The client sends a zero
           VC on the new connection, and Windows 2003 kills all other connections coming from the
           same IP. This way the locked files are accessible again. Please be aware that enabling
           this option will kill connections behind a masquerading router.

           Default: reset on zero vc = no

       restrict anonymous (G)

           The setting of this parameter determines whether user and group list information is
           returned for an anonymous connection. and mirrors the effects of the

               HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
                          Control\LSA\RestrictAnonymous

           registry key in Windows 2000 and Windows NT. When set to 0, user and group list
           information is returned to anyone who asks. When set to 1, only an authenticated user
           can retrive user and group list information. For the value 2, supported by Windows
           2000/XP and Samba, no anonymous connections are allowed at all. This can break third
           party and Microsoft applications which expect to be allowed to perform operations
           anonymously.

           The security advantage of using restrict anonymous = 1 is dubious, as user and group
           list information can be obtained using other means.

               Note
               The security advantage of using restrict anonymous = 2 is removed by setting guest
               ok = yes on any share.
           Default: restrict anonymous = 0

       root

           This parameter is a synonym for root directory.

       root dir

           This parameter is a synonym for root directory.

       root directory (G)

           The server will chroot() (i.e. Change its root directory) to this directory on
           startup. This is not strictly necessary for secure operation. Even without it the
           server will deny access to files not in one of the service entries. It may also check
           for, and deny access to, soft links to other parts of the filesystem, or attempts to
           use ".." in file names to access other directories (depending on the setting of the
           wide smbconfoptions parameter).

           Adding a root directory entry other than "/" adds an extra level of security, but at a
           price. It absolutely ensures that no access is given to files not in the sub-tree
           specified in the root directory option, including some files needed for complete
           operation of the server. To maintain full operability of the server you will need to
           mirror some system files into the root directory tree. In particular you will need to
           mirror /etc/passwd (or a subset of it), and any binaries or configuration files needed
           for printing (if required). The set of files that must be mirrored is operating system
           dependent.

           Default: root directory = /

           Example: root directory = /homes/smb

       root postexec (S)

           This is the same as the postexec parameter except that the command is run as root.
           This is useful for unmounting filesystems (such as CDROMs) after a connection is
           closed.

           Default: root postexec =

       root preexec close (S)

           This is the same as the preexec close parameter except that the command is run as
           root.

           Default: root preexec close = no

       root preexec (S)

           This is the same as the preexec parameter except that the command is run as root. This
           is useful for mounting filesystems (such as CDROMs) when a connection is opened.

           Default: root preexec =

       rpc_server (G)

           Defines what kind of rpc server to use for a named pipe. The rpc_server prefix must be
           followed by the pipe name, and a value.

           Three possible values are currently supported: embedded daemon external

           The classic method is to run every pipe as an internal function embedded in smbd.

           An alternative method is to fork a daemon early on at smbd startup time. This is
           supported only for selected pipes.

           Choosing the external option allows to run a completely independent (3rd party) server
           capable of interfacing with samba via the MS-RPC interface over named pipes.

           Currently only the spoolss pipe can be configured in daemon mode like this:

                    rpc_server:spoolss = daemon

           Default: rpc_server = none

       security mask (S)

           This parameter controls what UNIX permission bits will be set when a Windows NT client
           is manipulating the UNIX permission on a file using the native NT security dialog box.

           This parameter is applied as a mask (AND´ed with) to the incoming permission bits,
           thus resetting any bits not in this mask. Make sure not to mix up this parameter with
           force security mode, which works in a manner similar to this one but uses a logical OR
           instead of an AND.

           Essentially, all bits set to zero in this mask will result in setting to zero the
           corresponding bits on the file permissions regardless of the previous status of this
           bits on the file.

           If not set explicitly this parameter is 0777, allowing a user to set all the
           user/group/world permissions on a file.

            Note that users who can access the Samba server through other means can easily bypass
           this restriction, so it is primarily useful for standalone "appliance" systems.
           Administrators of most normal systems will probably want to leave it set to 0777.

           Default: security mask = 0777

           Example: security mask = 0770

       security (G)

           This option affects how clients respond to Samba and is one of the most important
           settings in the smb.conf file.

           The option sets the "security mode bit" in replies to protocol negotiations with
           smbd(8) to turn share level security on or off. Clients decide based on this bit
           whether (and how) to transfer user and password information to the server.

           The default is security = user, as this is the most common setting needed when talking
           to Windows 98 and Windows NT.

           The alternatives are security = ads or security = domain, which support joining Samba
           to a Windows domain, along with security = share and security = server, both of which
           are deprecated.

           In versions of Samba prior to 2.0.0, the default was security = share mainly because
           that was the only option at one stage.

           You should use security = user and map to guest if you want to mainly setup shares
           without a password (guest shares). This is commonly used for a shared printer server.

           It is possible to use smbd in a
            hybrid mode where it is offers both user and share level security under different
           NetBIOS aliases.

           The different settings will now be explained.

           SECURITY = USER

           This is the default security setting in Samba. With user-level security a client must
           first "log-on" with a valid username and password (which can be mapped using the
           username map parameter). Encrypted passwords (see the encrypted passwords parameter)
           can also be used in this security mode. Parameters such as user and guest only if set
           are then applied and may change the UNIX user to use on this connection, but only
           after the user has been successfully authenticated.

           Note that the name of the resource being requested is not sent to the server until
           after the server has successfully authenticated the client. This is why guest shares
           don´t work in user level security without allowing the server to automatically map
           unknown users into the guest account. See the map to guest parameter for details on
           doing this.

           See also the section NOTE ABOUT USERNAME/PASSWORD VALIDATION.

           SECURITY = DOMAIN

           This mode will only work correctly if net(8) has been used to add this machine into a
           Windows NT Domain. It expects the encrypted passwords parameter to be set to yes. In
           this mode Samba will try to validate the username/password by passing it to a Windows
           NT Primary or Backup Domain Controller, in exactly the same way that a Windows NT
           Server would do.

           Note that a valid UNIX user must still exist as well as the account on the Domain
           Controller to allow Samba to have a valid UNIX account to map file access to.

           Note that from the client´s point of view security = domain is the same as security =
           user. It only affects how the server deals with the authentication, it does not in any
           way affect what the client sees.

           Note that the name of the resource being requested is not sent to the server until
           after the server has successfully authenticated the client. This is why guest shares
           don´t work in user level security without allowing the server to automatically map
           unknown users into the guest account. See the map to guest parameter for details on
           doing this.

           See also the section NOTE ABOUT USERNAME/PASSWORD VALIDATION.

           See also the password server parameter and the encrypted passwords parameter.

           SECURITY = SHARE

               Note
               This option is deprecated as it is incompatible with SMB2
           When clients connect to a share level security server, they need not log onto the
           server with a valid username and password before attempting to connect to a shared
           resource (although modern clients such as Windows 95/98 and Windows NT will send a
           logon request with a username but no password when talking to a security = share
           server). Instead, the clients send authentication information (passwords) on a
           per-share basis, at the time they attempt to connect to that share.

           Note that smbd ALWAYS uses a valid UNIX user to act on behalf of the client, even in
           security = share level security.

           As clients are not required to send a username to the server in share level security,
           smbd uses several techniques to determine the correct UNIX user to use on behalf of
           the client.

           A list of possible UNIX usernames to match with the given client password is
           constructed using the following methods :

           ·   If the guest only parameter is set, then all the other stages are missed and only
               the guest account username is checked.

           ·   Is a username is sent with the share connection request, then this username (after
               mapping - see username map), is added as a potential username.

           ·   If the client did a previous logon request (the SessionSetup SMB call) then the
               username sent in this SMB will be added as a potential username.

           ·   The name of the service the client requested is added as a potential username.

           ·   The NetBIOS name of the client is added to the list as a potential username.

           ·   Any users on the user list are added as potential usernames.

       If the guest only parameter is not set, then this list is then tried with the supplied
       password. The first user for whom the password matches will be used as the UNIX user.

       If the guest only parameter is set, or no username can be determined then if the share is
       marked as available to the guest account, then this guest user will be used, otherwise
       access is denied.

       Note that it can be very confusing in share-level security as to which UNIX username will
       eventually be used in granting access.

       See also the section NOTE ABOUT USERNAME/PASSWORD VALIDATION.

       SECURITY = SERVER

       In this depicted mode Samba will try to validate the username/password by passing it to
       another SMB server, such as an NT box. If this fails it will revert to security = user. It
       expects the encrypted passwords parameter to be set to yes, unless the remote server does
       not support them. However note that if encrypted passwords have been negotiated then Samba
       cannot revert back to checking the UNIX password file, it must have a valid smbpasswd file
       to check users against. See the chapter about the User Database in the Samba HOWTO
       Collection for details on how to set this up.

           Note
           This mode of operation has significant pitfalls since it is more vulnerable to
           man-in-the-middle attacks and server impersonation. In particular, this mode of
           operation can cause significant resource consumption on the PDC, as it must maintain
           an active connection for the duration of the user´s session. Furthermore, if this
           connection is lost, there is no way to reestablish it, and further authentications to
           the Samba server may fail (from a single client, till it disconnects).

           Note
           If the client selects NTLMv2 authentication, then this mode of operation will fail

           Note
           From the client´s point of view, security = server is the same as security = user. It
           only affects how the server deals with the authentication, it does not in any way
           affect what the client sees.

           Note
           This option is deprecated, and may be removed in future
       Note that the name of the resource being requested is not sent to the server until after
       the server has successfully authenticated the client. This is why guest shares don´t work
       in user level security without allowing the server to automatically map unknown users into
       the guest account. See the map to guest parameter for details on doing this.

       See also the section NOTE ABOUT USERNAME/PASSWORD VALIDATION.

       See also the password server parameter and the encrypted passwords parameter.

       SECURITY = ADS

       In this mode, Samba will act as a domain member in an ADS realm. To operate in this mode,
       the machine running Samba will need to have Kerberos installed and configured and Samba
       will need to be joined to the ADS realm using the net utility.

       Note that this mode does NOT make Samba operate as a Active Directory Domain Controller.

       Read the chapter about Domain Membership in the HOWTO for details.

       Default: security = USER

       Example: security = DOMAIN

       send spnego principal (G)

           This parameter determines whether or not smbd(8) will send the server-supplied
           principal sometimes given in the SPNEGO exchange.

           If enabled, Samba can attempt to help clients to use Kerberos to contact it, even when
           known only by IP address or a name not registered with our KDC as a service principal
           name. Kerberos relies on names, so ordinarily cannot function in this situation.

           If disabled, Samba will send the string not_defined_in_RFC4178@please_ignore as the
           ´rfc4178 hint´, following the updated RFC and Windows 2008 behaviour in this area.

           Note that Windows XP SP2 and later versions already ignored this value in all
           circumstances.

           Default: send spnego principal = no

       server schannel (G)

           This controls whether the server offers or even demands the use of the netlogon
           schannel.  server schannel = no does not offer the schannel, server schannel = auto
           offers the schannel but does not enforce it, and server schannel = yes denies access
           if the client is not able to speak netlogon schannel. This is only the case for
           Windows NT4 before SP4.

           Please note that with this set to no, you will have to apply the WindowsXP
           WinXP_SignOrSeal.reg registry patch found in the docs/registry subdirectory of the
           Samba distribution tarball.

           Default: server schannel = auto

           Example: server schannel = yes

       server signing (G)

           This controls whether the client is allowed or required to use SMB signing. Possible
           values are auto, mandatory and disabled.

           When set to auto, SMB signing is offered, but not enforced. When set to mandatory, SMB
           signing is required and if set to disabled, SMB signing is not offered either.

           Default: server signing = Disabled

       server string (G)

           This controls what string will show up in the printer comment box in print manager and
           next to the IPC connection in net view. It can be any string that you wish to show to
           your users.

           It also sets what will appear in browse lists next to the machine name.

           A %v will be replaced with the Samba version number.

           A %h will be replaced with the hostname.

           Default: server string = Samba %v

           Example: server string = University of GNUs Samba Server

       set directory (S)

           If set directory = no, then users of the service may not use the setdir command to
           change directory.

           The setdir command is only implemented in the Digital Pathworks client. See the
           Pathworks documentation for details.

           Default: set directory = no

       set primary group script (G)

           Thanks to the Posix subsystem in NT a Windows User has a primary group in addition to
           the auxiliary groups. This script sets the primary group in the unix userdatase when
           an administrator sets the primary group from the windows user manager or when fetching
           a SAM with net rpc vampire.  %u will be replaced with the user whose primary group is
           to be set.  %g will be replaced with the group to set.

           Default: set primary group script =

           Example: set primary group script = /usr/sbin/usermod -g ´%g´ ´%u´

       set quota command (G)

           The set quota command should only be used whenever there is no operating system API
           available from the OS that samba can use.

           This option is only available if Samba was configured with the argument
           --with-sys-quotas or on linux when ./configure --with-quotas was used and a working
           quota api was found in the system. Most packages are configured with these options
           already.

           This parameter should specify the path to a script that can set quota for the
           specified arguments.

           The specified script should take the following arguments:

           ·   1 - quota type

               ·   1 - user quotas

               ·   2 - user default quotas (uid = -1)

               ·   3 - group quotas

               ·   4 - group default quotas (gid = -1)

       ·   2 - id (uid for user, gid for group, -1 if N/A)

       ·   3 - quota state (0 = disable, 1 = enable, 2 = enable and enforce)

       ·   4 - block softlimit

       ·   5 - block hardlimit

       ·   6 - inode softlimit

       ·   7 - inode hardlimit

       ·   8(optional) - block size, defaults to 1024

       The script should output at least one line of data on success. And nothing on failure.

       Default: set quota command =

       Example: set quota command = /usr/local/sbin/set_quota

       share:fake_fscaps (G)

           This is needed to support some special application that makes QFSINFO calls to check
           whether we set the SPARSE_FILES bit (0x40). If this bit is not set that particular
           application refuses to work against Samba. With share:fake_fscaps = 64 the
           SPARSE_FILES file system capability flag is set. Use other decimal values to specify
           the bitmask you need to fake.

           Default: share:fake_fscaps = 0

       share modes (S)

           This enables or disables the honoring of the share modes during a file open. These
           modes are used by clients to gain exclusive read or write access to a file.

           This is a deprecated option from old versions of Samba, and will be removed in the
           next major release.

           These open modes are not directly supported by UNIX, so they are simulated using
           shared memory.

           The share modes that are enabled by this option are the standard Windows share modes.

           This option gives full share compatibility and is enabled by default.

           You should NEVER turn this parameter off as many Windows applications will break if
           you do so.

           Default: share modes = yes

       short preserve case (S)

           This boolean parameter controls if new files which conform to 8.3 syntax, that is all
           in upper case and of suitable length, are created upper case, or if they are forced to
           be the default case. This option can be use with preserve case = yes to permit long
           filenames to retain their case, while short names are lowered.

           See the section on NAME MANGLING.

           Default: short preserve case = yes

       show add printer wizard (G)

           With the introduction of MS-RPC based printing support for Windows NT/2000 client in
           Samba 2.2, a "Printers..." folder will appear on Samba hosts in the share listing.
           Normally this folder will contain an icon for the MS Add Printer Wizard (APW).
           However, it is possible to disable this feature regardless of the level of privilege
           of the connected user.

           Under normal circumstances, the Windows NT/2000 client will open a handle on the
           printer server with OpenPrinterEx() asking for Administrator privileges. If the user
           does not have administrative access on the print server (i.e is not root or a member
           of the printer admin group), the OpenPrinterEx() call fails and the client makes
           another open call with a request for a lower privilege level. This should succeed,
           however the APW icon will not be displayed.

           Disabling the show add printer wizard parameter will always cause the OpenPrinterEx()
           on the server to fail. Thus the APW icon will never be displayed.

               Note
               This does not prevent the same user from having administrative privilege on an
               individual printer.
           Default: show add printer wizard = yes

       shutdown script (G)

           This a full path name to a script called by smbd(8) that should start a shutdown
           procedure.

           If the connected user posseses the SeRemoteShutdownPrivilege, right, this command will
           be run as root.

           The %z %t %r %f variables are expanded as follows:

           ·   %z will be substituted with the shutdown message sent to the server.

           ·   %t will be substituted with the number of seconds to wait before effectively
               starting the shutdown procedure.

           ·   %r will be substituted with the switch -r. It means reboot after shutdown for NT.

           ·   %f will be substituted with the switch -f. It means force the shutdown even if
               applications do not respond for NT.

       Shutdown script example:

           #!/bin/bash

           time=$2
           let time="${time} / 60"
           let time="${time} + 1"

           /sbin/shutdown $3 $4 +$time $1 &

       Shutdown does not return so we need to launch it in background.

       Default: shutdown script =

       Example: shutdown script = /usr/local/samba/sbin/shutdown %m %t %r %f

       smb2 max credits (G)

           This option controls the maximum number of outstanding simultaneous SMB2 operations
           that Samba tells the client it will allow. This is similar to the max mux parameter
           for SMB1. You should never need to set this parameter.

           The default is 8192 credits, which is the same as a Windows 2008R2 SMB2 server.

           Default: smb2 max credits = 8192

       smb2 max read (G)

           This option specifies the protocol value that smbd(8) will return to a client,
           informing the client of the largest size that may be returned by a single SMB2 read
           call.

           The maximum is 65536 bytes (64KB), which is the same as a Windows Vista SMB2 server.

           Default: smb2 max read = 65536

       smb2 max trans (G)

           This option specifies the protocol value that smbd(8) will return to a client,
           informing the client of the largest size of buffer that may be used in querying file
           meta-data via QUERY_INFO and related SMB2 calls.

           The maximum is 65536 bytes (64KB), which is the same as a Windows Vista SMB2 server.

           Default: smb2 max trans = 65536

       smb2 max write (G)

           This option specifies the protocol value that smbd(8) will return to a client,
           informing the client of the largest size that may be sent to the server by a single
           SMB2 write call.

           The maximum is 65536 bytes (64KB), which is the same as a Windows Vista SMB2 server.

           Default: smb2 max write = 65536

       smb encrypt (S)

           This is a new feature introduced with Samba 3.2 and above. It is an extension to the
           SMB/CIFS protocol negotiated as part of the UNIX extensions. SMB encryption uses the
           GSSAPI (SSPI on Windows) ability to encrypt and sign every request/response in a SMB
           protocol stream. When enabled it provides a secure method of SMB/CIFS communication,
           similar to an ssh protected session, but using SMB/CIFS authentication to negotiate
           encryption and signing keys. Currently this is only supported by Samba 3.2 smbclient,
           and hopefully soon Linux CIFSFS and MacOS/X clients. Windows clients do not support
           this feature.

           This controls whether the remote client is allowed or required to use SMB encryption.
           Possible values are auto, mandatory and disabled. This may be set on a per-share
           basis, but clients may chose to encrypt the entire session, not just traffic to a
           specific share. If this is set to mandatory then all traffic to a share must must be
           encrypted once the connection has been made to the share. The server would return
           "access denied" to all non-encrypted requests on such a share. Selecting encrypted
           traffic reduces throughput as smaller packet sizes must be used (no huge UNIX style
           read/writes allowed) as well as the overhead of encrypting and signing all the data.

           If SMB encryption is selected, Windows style SMB signing (see the server signing
           option) is no longer necessary, as the GSSAPI flags use select both signing and
           sealing of the data.

           When set to auto, SMB encryption is offered, but not enforced. When set to mandatory,
           SMB encryption is required and if set to disabled, SMB encryption can not be
           negotiated.

           Default: smb encrypt = auto

       smb passwd file (G)

           This option sets the path to the encrypted smbpasswd file. By default the path to the
           smbpasswd file is compiled into Samba.

           An example of use is:

               smb passwd file = /etc/samba/smbpasswd

           Default: smb passwd file = ${prefix}/private/smbpasswd

       smb ports (G)

           Specifies which ports the server should listen on for SMB traffic.

           Default: smb ports = 445 139

       socket address (G)

           This option allows you to control what address Samba will listen for connections on.
           This is used to support multiple virtual interfaces on the one server, each with a
           different configuration.

           Setting this option should never be necessary on usual Samba servers running only one
           nmbd.

           By default Samba will accept connections on any address.

           Default: socket address =

           Example: socket address = 192.168.2.20

       socket options (G)

           This option allows you to set socket options to be used when talking with the client.

           Socket options are controls on the networking layer of the operating systems which
           allow the connection to be tuned.

           This option will typically be used to tune your Samba server for optimal performance
           for your local network. There is no way that Samba can know what the optimal
           parameters are for your net, so you must experiment and choose them yourself. We
           strongly suggest you read the appropriate documentation for your operating system
           first (perhaps man setsockopt will help).

           You may find that on some systems Samba will say "Unknown socket option" when you
           supply an option. This means you either incorrectly typed it or you need to add an
           include file to includes.h for your OS. If the latter is the case please send the
           patch to samba-technical@samba.org.

           Any of the supported socket options may be combined in any way you like, as long as
           your OS allows it.

           This is the list of socket options currently settable using this option:

           ·   SO_KEEPALIVE

           ·   SO_REUSEADDR

           ·   SO_BROADCAST

           ·   TCP_NODELAY

           ·   IPTOS_LOWDELAY

           ·   IPTOS_THROUGHPUT

           ·   SO_SNDBUF *

           ·   SO_RCVBUF *

           ·   SO_SNDLOWAT *

           ·   SO_RCVLOWAT *

       Those marked with a ´*´ take an integer argument. The others can optionally take a 1 or 0
       argument to enable or disable the option, by default they will be enabled if you don´t
       specify 1 or 0.

       To specify an argument use the syntax SOME_OPTION = VALUE for example SO_SNDBUF = 8192.
       Note that you must not have any spaces before or after the = sign.

       If you are on a local network then a sensible option might be:

       socket options = IPTOS_LOWDELAY

       If you have a local network then you could try:

       socket options = IPTOS_LOWDELAY TCP_NODELAY

       If you are on a wide area network then perhaps try setting IPTOS_THROUGHPUT.

       Note that several of the options may cause your Samba server to fail completely. Use these
       options with caution!

       Default: socket options = TCP_NODELAY

       Example: socket options = IPTOS_LOWDELAY

       stat cache (G)

           This parameter determines if smbd(8) will use a cache in order to speed up case
           insensitive name mappings. You should never need to change this parameter.

           Default: stat cache = yes

       state directory (G)

           Usually, most of the TDB files are stored in the lock directory. Since Samba 3.4.0, it
           is possible to differentiate between TDB files with persistent data and TDB files with
           non-persistent data using the state directory and the cache directory options.

           This option specifies the directory where TDB files containing persistent data will be
           stored.

           Default: state directory = ${prefix}/var/locks

           Example: state directory = /var/run/samba/locks/state

       store dos attributes (S)

           If this parameter is set Samba attempts to first read DOS attributes (SYSTEM, HIDDEN,
           ARCHIVE or READ-ONLY) from a filesystem extended attribute, before mapping DOS
           attributes to UNIX permission bits (such as occurs with map hidden and map readonly).
           When set, DOS attributes will be stored onto an extended attribute in the UNIX
           filesystem, associated with the file or directory. For no other mapping to occur as a
           fall-back, the parameters map hidden, map system, map archive and map readonly must be
           set to off. This parameter writes the DOS attributes as a string into the extended
           attribute named "user.DOSATTRIB". This extended attribute is explicitly hidden from
           smbd clients requesting an EA list. On Linux the filesystem must have been mounted
           with the mount option user_xattr in order for extended attributes to work, also
           extended attributes must be compiled into the Linux kernel. In Samba 3.5.0 and above
           the "user.DOSATTRIB" extended attribute has been extended to store the create time for
           a file as well as the DOS attributes. This is done in a backwards compatible way so
           files created by Samba 3.5.0 and above can still have the DOS attribute read from this
           extended attribute by earlier versions of Samba, but they will not be able to read the
           create time stored there. Storing the create time separately from the normal
           filesystem meta-data allows Samba to faithfully reproduce NTFS semantics on top of a
           POSIX filesystem.

           Default: store dos attributes = no

       strict allocate (S)

           This is a boolean that controls the handling of disk space allocation in the server.
           When this is set to yes the server will change from UNIX behaviour of not committing
           real disk storage blocks when a file is extended to the Windows behaviour of actually
           forcing the disk system to allocate real storage blocks when a file is created or
           extended to be a given size. In UNIX terminology this means that Samba will stop
           creating sparse files.

           This option is really desgined for file systems that support fast allocation of large
           numbers of blocks such as extent-based file systems. On file systems that don´t
           support extents (most notably ext3) this can make Samba slower. When you work with
           large files over >100MB on file systems without extents you may even run into problems
           with clients running into timeouts.

           When you have an extent based filesystem it´s likely that we can make use of unwritten
           extents which allows Samba to allocate even large amounts of space very fast and you
           will not see any timeout problems caused by strict allocate. With strict allocate in
           use you will also get much better out of quota messages in case you use quotas.
           Another advantage of activating this setting is that it will help to reduce file
           fragmentation.

           To give you an idea on which filesystems this setting might currently be a good option
           for you: XFS, ext4, btrfs, ocfs2 on Linux and JFS2 on AIX support unwritten extents.
           On Filesystems that do not support it, preallocation is probably an expensive
           operation where you will see reduced performance and risk to let clients run into
           timeouts when creating large files. Examples are ext3, ZFS, HFS+ and most others, so
           be aware if you activate this setting on those filesystems.

           Default: strict allocate = no

       strict locking (S)

           This is an enumerated type that controls the handling of file locking in the server.
           When this is set to yes, the server will check every read and write access for file
           locks, and deny access if locks exist. This can be slow on some systems.

           When strict locking is set to Auto (the default), the server performs file lock checks
           only on non-oplocked files. As most Windows redirectors perform file locking checks
           locally on oplocked files this is a good trade off for improved performance.

           When strict locking is disabled, the server performs file lock checks only when the
           client explicitly asks for them.

           Well-behaved clients always ask for lock checks when it is important. So in the vast
           majority of cases, strict locking = Auto or strict locking = no is acceptable.

           Default: strict locking = Auto

       strict sync (S)

           Many Windows applications (including the Windows 98 explorer shell) seem to confuse
           flushing buffer contents to disk with doing a sync to disk. Under UNIX, a sync call
           forces the process to be suspended until the kernel has ensured that all outstanding
           data in kernel disk buffers has been safely stored onto stable storage. This is very
           slow and should only be done rarely. Setting this parameter to no (the default) means
           that smbd(8) ignores the Windows applications requests for a sync call. There is only
           a possibility of losing data if the operating system itself that Samba is running on
           crashes, so there is little danger in this default setting. In addition, this fixes
           many performance problems that people have reported with the new Windows98 explorer
           shell file copies.

           Default: strict sync = no

       svcctl list (G)

           This option defines a list of init scripts that smbd will use for starting and
           stopping Unix services via the Win32 ServiceControl API. This allows Windows
           administrators to utilize the MS Management Console plug-ins to manage a Unix server
           running Samba.

           The administrator must create a directory name svcctl in Samba´s $(libdir) and create
           symbolic links to the init scripts in /etc/init.d/. The name of the links must match
           the names given as part of the svcctl list.

           Default: svcctl list =

           Example: svcctl list = cups postfix portmap httpd

       sync always (S)

           This is a boolean parameter that controls whether writes will always be written to
           stable storage before the write call returns. If this is no then the server will be
           guided by the client´s request in each write call (clients can set a bit indicating
           that a particular write should be synchronous). If this is yes then every write will
           be followed by a fsync() call to ensure the data is written to disk. Note that the
           strict sync parameter must be set to yes in order for this parameter to have any
           effect.

           Default: sync always = no

       syslog only (G)

           If this parameter is set then Samba debug messages are logged into the system syslog
           only, and not to the debug log files. There still will be some logging to log.[sn]mbd
           even if syslog only is enabled.

           Default: syslog only = no

       syslog (G)

           This parameter maps how Samba debug messages are logged onto the system syslog logging
           levels. Samba debug level zero maps onto syslog LOG_ERR, debug level one maps onto
           LOG_WARNING, debug level two maps onto LOG_NOTICE, debug level three maps onto
           LOG_INFO. All higher levels are mapped to LOG_DEBUG.

           This parameter sets the threshold for sending messages to syslog. Only messages with
           debug level less than this value will be sent to syslog. There still will be some
           logging to log.[sn]mbd even if syslog only is enabled.

           Default: syslog = 1

       template homedir (G)

           When filling out the user information for a Windows NT user, the winbindd(8) daemon
           uses this parameter to fill in the home directory for that user. If the string %D is
           present it is substituted with the user´s Windows NT domain name. If the string %U is
           present it is substituted with the user´s Windows NT user name.

           Default: template homedir = /home/%D/%U

       template shell (G)

           When filling out the user information for a Windows NT user, the winbindd(8) daemon
           uses this parameter to fill in the login shell for that user.

           No default

       time offset (G)

           This deprecated parameter is a setting in minutes to add to the normal GMT to local
           time conversion. This is useful if you are serving a lot of PCs that have incorrect
           daylight saving time handling.

               Note
               This option is deprecated, and will be removed in the next major release
           Default: time offset = 0

           Example: time offset = 60

       time server (G)

           This parameter determines if nmbd(8) advertises itself as a time server to Windows
           clients.

           Default: time server = no

       unix charset (G)

           Specifies the charset the unix machine Samba runs on uses. Samba needs to know this in
           order to be able to convert text to the charsets other SMB clients use.

           This is also the charset Samba will use when specifying arguments to scripts that it
           invokes.

           Default: unix charset = UTF8

           Example: unix charset = ASCII

       unix extensions (G)

           This boolean parameter controls whether Samba implements the CIFS UNIX extensions, as
           defined by HP. These extensions enable Samba to better serve UNIX CIFS clients by
           supporting features such as symbolic links, hard links, etc... These extensions
           require a similarly enabled client, and are of no current use to Windows clients.

           Note if this parameter is turned on, the wide links parameter will automatically be
           disabled.

           See the parameter allow insecure wide links if you wish to change this coupling
           between the two parameters.

           Default: unix extensions = yes

       unix password sync (G)

           This boolean parameter controls whether Samba attempts to synchronize the UNIX
           password with the SMB password when the encrypted SMB password in the smbpasswd file
           is changed. If this is set to yes the program specified in the passwd program
           parameter is called AS ROOT - to allow the new UNIX password to be set without access
           to the old UNIX password (as the SMB password change code has no access to the old
           password cleartext, only the new).

           Default: unix password sync = no

       use client driver (S)

           This parameter applies only to Windows NT/2000 clients. It has no effect on Windows
           95/98/ME clients. When serving a printer to Windows NT/2000 clients without first
           installing a valid printer driver on the Samba host, the client will be required to
           install a local printer driver. From this point on, the client will treat the print as
           a local printer and not a network printer connection. This is much the same behavior
           that will occur when disable spoolss = yes.

           The differentiating factor is that under normal circumstances, the NT/2000 client will
           attempt to open the network printer using MS-RPC. The problem is that because the
           client considers the printer to be local, it will attempt to issue the OpenPrinterEx()
           call requesting access rights associated with the logged on user. If the user
           possesses local administator rights but not root privilege on the Samba host (often
           the case), the OpenPrinterEx() call will fail. The result is that the client will now
           display an "Access Denied; Unable to connect" message in the printer queue window
           (even though jobs may successfully be printed).

           If this parameter is enabled for a printer, then any attempt to open the printer with
           the PRINTER_ACCESS_ADMINISTER right is mapped to PRINTER_ACCESS_USE instead. Thus
           allowing the OpenPrinterEx() call to succeed.  This parameter MUST not be enabled on a
           print share which has valid print driver installed on the Samba server.

           Default: use client driver = no

       use mmap (G)

           This global parameter determines if the tdb internals of Samba can depend on mmap
           working correctly on the running system. Samba requires a coherent mmap/read-write
           system memory cache. Currently only HPUX does not have such a coherent cache, and so
           this parameter is set to no by default on HPUX. On all other systems this parameter
           should be left alone. This parameter is provided to help the Samba developers track
           down problems with the tdb internal code.

           Default: use mmap = yes

       username level (G)

           This option helps Samba to try and ´guess´ at the real UNIX username, as many DOS
           clients send an all-uppercase username. By default Samba tries all lowercase, followed
           by the username with the first letter capitalized, and fails if the username is not
           found on the UNIX machine.

           If this parameter is set to non-zero the behavior changes. This parameter is a number
           that specifies the number of uppercase combinations to try while trying to determine
           the UNIX user name. The higher the number the more combinations will be tried, but the
           slower the discovery of usernames will be. Use this parameter when you have strange
           usernames on your UNIX machine, such as AstrangeUser .

           This parameter is needed only on UNIX systems that have case sensitive usernames.

           Default: username level = 0

           Example: username level = 5

       username map cache time (G)

           Mapping usernames with the username map or username map script features of Samba can
           be relatively expensive. During login of a user, the mapping is done several times. In
           particular, calling the username map script can slow down logins if external databases
           have to be queried from the script being called.

           The parameter username map cache time controls a mapping cache. It specifies the
           number of seconds a mapping from the username map file or script is to be efficiently
           cached. The default of 0 means no caching is done.

           Default: username map cache time = 0

           Example: username map cache time = 60

       username map script (G)

           This script is a mutually exclusive alternative to the username map parameter. This
           parameter specifies and external program or script that must accept a single command
           line option (the username transmitted in the authentication request) and return a line
           line on standard output (the name to which the account should mapped). In this way, it
           is possible to store username map tables in an LDAP or NIS directory services.

           Default: username map script =

           Example: username map script = /etc/samba/scripts/mapusers.sh

       username map (G)

           This option allows you to specify a file containing a mapping of usernames from the
           clients to the server. This can be used for several purposes. The most common is to
           map usernames that users use on DOS or Windows machines to those that the UNIX box
           uses. The other is to map multiple users to a single username so that they can more
           easily share files.

           Please note that for user or share mode security, the username map is applied prior to
           validating the user credentials. Domain member servers (domain or ads) apply the
           username map after the user has been successfully authenticated by the domain
           controller and require fully qualified enties in the map table (e.g. biddle =
           DOMAIN\foo).

           The map file is parsed line by line. Each line should contain a single UNIX username
           on the left then a ´=´ followed by a list of usernames on the right. The list of
           usernames on the right may contain names of the form @group in which case they will
           match any UNIX username in that group. The special client name ´*´ is a wildcard and
           matches any name. Each line of the map file may be up to 1023 characters long.

           The file is processed on each line by taking the supplied username and comparing it
           with each username on the right hand side of the ´=´ signs. If the supplied name
           matches any of the names on the right hand side then it is replaced with the name on
           the left. Processing then continues with the next line.

           If any line begins with a ´#´ or a ´;´ then it is ignored.

           If any line begins with an ´!´ then the processing will stop after that line if a
           mapping was done by the line. Otherwise mapping continues with every line being
           processed. Using ´!´ is most useful when you have a wildcard mapping line later in the
           file.

           For example to map from the name admin or administrator to the UNIX name
            root you would use:

               root = admin administrator

           Or to map anyone in the UNIX group system to the UNIX name sys you would use:

               sys = @system

           You can have as many mappings as you like in a username map file.

           If your system supports the NIS NETGROUP option then the netgroup database is checked
           before the /etc/group database for matching groups.

           You can map Windows usernames that have spaces in them by using double quotes around
           the name. For example:

               tridge = "Andrew Tridgell"

           would map the windows username "Andrew Tridgell" to the unix username "tridge".

           The following example would map mary and fred to the unix user sys, and map the rest
           to guest. Note the use of the ´!´ to tell Samba to stop processing if it gets a match
           on that line:

               !sys = mary fred
               guest = *

           Note that the remapping is applied to all occurrences of usernames. Thus if you
           connect to \\server\fred and fred is remapped to mary then you will actually be
           connecting to \\server\mary and will need to supply a password suitable for mary not
           fred. The only exception to this is the username passed to the password server (if you
           have one). The password server will receive whatever username the client supplies
           without modification.

           Also note that no reverse mapping is done. The main effect this has is with printing.
           Users who have been mapped may have trouble deleting print jobs as PrintManager under
           WfWg will think they don´t own the print job.

           Samba versions prior to 3.0.8 would only support reading the fully qualified username
           (e.g.: DOMAIN\user) from the username map when performing a kerberos login from a
           client. However, when looking up a map entry for a user authenticated by NTLM[SSP],
           only the login name would be used for matches. This resulted in inconsistent behavior
           sometimes even on the same server.

           The following functionality is obeyed in version 3.0.8 and later:

           When performing local authentication, the username map is applied to the login name
           before attempting to authenticate the connection.

           When relying upon a external domain controller for validating authentication requests,
           smbd will apply the username map to the fully qualified username (i.e.  DOMAIN\user)
           only after the user has been successfully authenticated.

           An example of use is:

               username map = /usr/local/samba/lib/users.map

           Default: username map =  # no username map

       user

           This parameter is a synonym for username.

       users

           This parameter is a synonym for username.

       username (S)

           Multiple users may be specified in a comma-delimited list, in which case the supplied
           password will be tested against each username in turn (left to right).

           The deprecated username line is needed only when the PC is unable to supply its own
           username. This is the case for the COREPLUS protocol or where your users have
           different WfWg usernames to UNIX usernames. In both these cases you may also be better
           using the \\server\share%user syntax instead.

           The username line is not a great solution in many cases as it means Samba will try to
           validate the supplied password against each of the usernames in the username line in
           turn. This is slow and a bad idea for lots of users in case of duplicate passwords.
           You may get timeouts or security breaches using this parameter unwisely.

           Samba relies on the underlying UNIX security. This parameter does not restrict who can
           login, it just offers hints to the Samba server as to what usernames might correspond
           to the supplied password. Users can login as whoever they please and they will be able
           to do no more damage than if they started a telnet session. The daemon runs as the
           user that they log in as, so they cannot do anything that user cannot do.

           To restrict a service to a particular set of users you can use the valid users
           parameter.

           If any of the usernames begin with a ´@´ then the name will be looked up first in the
           NIS netgroups list (if Samba is compiled with netgroup support), followed by a lookup
           in the UNIX groups database and will expand to a list of all users in the group of
           that name.

           If any of the usernames begin with a ´+´ then the name will be looked up only in the
           UNIX groups database and will expand to a list of all users in the group of that name.

           If any of the usernames begin with a ´&´ then the name will be looked up only in the
           NIS netgroups database (if Samba is compiled with netgroup support) and will expand to
           a list of all users in the netgroup group of that name.

           Note that searching though a groups database can take quite some time, and some
           clients may time out during the search.

           See the section NOTE ABOUT USERNAME/PASSWORD VALIDATION for more information on how
           this parameter determines access to the services.

           Default: username =  # The guest account if a guest service, else <empty string>.

           Example: username = fred, mary, jack, jane, @users, @pcgroup

       usershare allow guests (G)

           This parameter controls whether user defined shares are allowed to be accessed by
           non-authenticated users or not. It is the equivalent of allowing people who can create
           a share the option of setting guest ok = yes in a share definition. Due to its
           security sensitive nature, the default is set to off.

           Default: usershare allow guests = no

       usershare max shares (G)

           This parameter specifies the number of user defined shares that are allowed to be
           created by users belonging to the group owning the usershare directory. If set to zero
           (the default) user defined shares are ignored.

           Default: usershare max shares = 0

       usershare owner only (G)

           This parameter controls whether the pathname exported by a user defined shares must be
           owned by the user creating the user defined share or not. If set to True (the default)
           then smbd checks that the directory path being shared is owned by the user who owns
           the usershare file defining this share and refuses to create the share if not. If set
           to False then no such check is performed and any directory path may be exported
           regardless of who owns it.

           Default: usershare owner only = True

       usershare path (G)

           This parameter specifies the absolute path of the directory on the filesystem used to
           store the user defined share definition files. This directory must be owned by root,
           and have no access for other, and be writable only by the group owner. In addition the
           "sticky" bit must also be set, restricting rename and delete to owners of a file (in
           the same way the /tmp directory is usually configured). Members of the group owner of
           this directory are the users allowed to create usershares. If this parameter is
           undefined then no user defined shares are allowed.

           For example, a valid usershare directory might be /usr/local/samba/lib/usershares, set
           up as follows.

                    ls -ld /usr/local/samba/lib/usershares/
                    drwxrwx--T  2 root power_users 4096 2006-05-05 12:27 /usr/local/samba/lib/usershares/

           In this case, only members of the group "power_users" can create user defined shares.

           Default: usershare path = NULL

       usershare prefix allow list (G)

           This parameter specifies a list of absolute pathnames the root of which are allowed to
           be exported by user defined share definitions. If the pathname to be exported doesn´t
           start with one of the strings in this list, the user defined share will not be
           allowed. This allows the Samba administrator to restrict the directories on the system
           that can be exported by user defined shares.

           If there is a "usershare prefix deny list" and also a "usershare prefix allow list"
           the deny list is processed first, followed by the allow list, thus leading to the most
           restrictive interpretation.

           Default: usershare prefix allow list = NULL

           Example: usershare prefix allow list = /home /data /space

       usershare prefix deny list (G)

           This parameter specifies a list of absolute pathnames the root of which are NOT
           allowed to be exported by user defined share definitions. If the pathname exported
           starts with one of the strings in this list the user defined share will not be
           allowed. Any pathname not starting with one of these strings will be allowed to be
           exported as a usershare. This allows the Samba administrator to restrict the
           directories on the system that can be exported by user defined shares.

           If there is a "usershare prefix deny list" and also a "usershare prefix allow list"
           the deny list is processed first, followed by the allow list, thus leading to the most
           restrictive interpretation.

           Default: usershare prefix deny list = NULL

           Example: usershare prefix deny list = /etc /dev /private

       usershare template share (G)

           User defined shares only have limited possible parameters such as path, guest ok, etc.
           This parameter allows usershares to "cloned" from an existing share. If "usershare
           template share" is set to the name of an existing share, then all usershares created
           have their defaults set from the parameters set on this share.

           The target share may be set to be invalid for real file sharing by setting the
           parameter "-valid = False" on the template share definition. This causes it not to be
           seen as a real exported share but to be able to be used as a template for usershares.

           Default: usershare template share = NULL

           Example: usershare template share = template_share

       use sendfile (S)

           If this parameter is yes, and the sendfile() system call is supported by the
           underlying operating system, then some SMB read calls (mainly ReadAndX and ReadRaw)
           will use the more efficient sendfile system call for files that are exclusively
           oplocked. This may make more efficient use of the system CPU´s and cause Samba to be
           faster. Samba automatically turns this off for clients that use protocol levels lower
           than NT LM 0.12 and when it detects a client is Windows 9x (using sendfile from Linux
           will cause these clients to fail).

           Default: use sendfile = false

       use spnego (G)

           This deprecated variable controls controls whether samba will try to use Simple and
           Protected NEGOciation (as specified by rfc2478) with WindowsXP and Windows2000 clients
           to agree upon an authentication mechanism.

           Unless further issues are discovered with our SPNEGO implementation, there is no
           reason this should ever be disabled.

           Default: use spnego = yes

       utmp directory (G)

           This parameter is only available if Samba has been configured and compiled with the
           option --with-utmp. It specifies a directory pathname that is used to store the utmp
           or utmpx files (depending on the UNIX system) that record user connections to a Samba
           server. By default this is not set, meaning the system will use whatever utmp file the
           native system is set to use (usually /var/run/utmp on Linux).

           Default: utmp directory =  # Determined automatically

           Example: utmp directory = /var/run/utmp

       utmp (G)

           This boolean parameter is only available if Samba has been configured and compiled
           with the option --with-utmp. If set to yes then Samba will attempt to add utmp or
           utmpx records (depending on the UNIX system) whenever a connection is made to a Samba
           server. Sites may use this to record the user connecting to a Samba share.

           Due to the requirements of the utmp record, we are required to create a unique
           identifier for the incoming user. Enabling this option creates an n^2 algorithm to
           find this number. This may impede performance on large installations.

           Default: utmp = no

       valid users (S)

           This is a list of users that should be allowed to login to this service. Names
           starting with ´@´, ´+´ and ´&´ are interpreted using the same rules as described in
           the invalid users parameter.

           If this is empty (the default) then any user can login. If a username is in both this
           list and the invalid users list then access is denied for that user.

           The current servicename is substituted for %S. This is useful in the [homes] section.

           Default: valid users =  # No valid users list (anyone can login)

           Example: valid users = greg, @pcusers

       -valid (S)

           This parameter indicates whether a share is valid and thus can be used. When this
           parameter is set to false, the share will be in no way visible nor accessible.

           This option should not be used by regular users but might be of help to developers.
           Samba uses this option internally to mark shares as deleted.

           Default: -valid = yes

       veto files (S)

           This is a list of files and directories that are neither visible nor accessible. Each
           entry in the list must be separated by a ´/´, which allows spaces to be included in
           the entry. ´*´ and ´?´ can be used to specify multiple files or directories as in DOS
           wildcards.

           Each entry must be a unix path, not a DOS path and must not include the unix directory
           separator ´/´.

           Note that the case sensitive option is applicable in vetoing files.

           One feature of the veto files parameter that it is important to be aware of is Samba´s
           behaviour when trying to delete a directory. If a directory that is to be deleted
           contains nothing but veto files this deletion will fail unless you also set the delete
           veto files parameter to yes.

           Setting this parameter will affect the performance of Samba, as it will be forced to
           check all files and directories for a match as they are scanned.

           Examples of use include:

               ; Veto any files containing the word Security,
               ; any ending in .tmp, and any directory containing the
               ; word root.
               veto files = /*Security*/*.tmp/*root*/

               ; Veto the Apple specific files that a NetAtalk server
               ; creates.
               veto files = /.AppleDouble/.bin/.AppleDesktop/Network Trash Folder/

           Default: veto files = No files or directories are vetoed.

       veto oplock files (S)

           This parameter is only valid when the oplocks parameter is turned on for a share. It
           allows the Samba administrator to selectively turn off the granting of oplocks on
           selected files that match a wildcarded list, similar to the wildcarded list used in
           the veto files parameter.

           You might want to do this on files that you know will be heavily contended for by
           clients. A good example of this is in the NetBench SMB benchmark program, which causes
           heavy client contention for files ending in .SEM. To cause Samba not to grant oplocks
           on these files you would use the line (either in the [global] section or in the
           section for the particular NetBench share.

           An example of use is:

               veto oplock files = /.*SEM/

           Default: veto oplock files =  # No files are vetoed for oplock grants

       vfs object

           This parameter is a synonym for vfs objects.

       vfs objects (S)

           This parameter specifies the backend names which are used for Samba VFS I/O
           operations. By default, normal disk I/O operations are used but these can be
           overloaded with one or more VFS objects.

           Default: vfs objects =

           Example: vfs objects = extd_audit recycle

       volume (S)

           This allows you to override the volume label returned for a share. Useful for CDROMs
           with installation programs that insist on a particular volume label.

           Default: volume =  # the name of the share

       wide links (S)

           This parameter controls whether or not links in the UNIX file system may be followed
           by the server. Links that point to areas within the directory tree exported by the
           server are always allowed; this parameter controls access only to areas that are
           outside the directory tree being exported.

           Note: Turning this parameter on when UNIX extensions are enabled will allow UNIX
           clients to create symbolic links on the share that can point to files or directories
           outside restricted path exported by the share definition. This can cause access to
           areas outside of the share. Due to this problem, this parameter will be automatically
           disabled (with a message in the log file) if the unix extensions option is on.

           See the parameter allow insecure wide links if you wish to change this coupling
           between the two parameters.

           Default: wide links = no

       winbind cache time (G)

           This parameter specifies the number of seconds the winbindd(8) daemon will cache user
           and group information before querying a Windows NT server again.

           This does not apply to authentication requests, these are always evaluated in real
           time unless the winbind offline logon option has been enabled.

           Default: winbind cache time = 300

       winbind enum groups (G)

           On large installations using winbindd(8) it may be necessary to suppress the
           enumeration of groups through the setgrent(), getgrent() and endgrent() group of
           system calls. If the winbind enum groups parameter is no, calls to the getgrent()
           system call will not return any data.

               Warning
               Turning off group enumeration may cause some programs to behave oddly.
           Default: winbind enum groups = no

       winbind enum users (G)

           On large installations using winbindd(8) it may be necessary to suppress the
           enumeration of users through the setpwent(), getpwent() and endpwent() group of system
           calls. If the winbind enum users parameter is no, calls to the getpwent system call
           will not return any data.

               Warning
               Turning off user enumeration may cause some programs to behave oddly. For example,
               the finger program relies on having access to the full user list when searching
               for matching usernames.
           Default: winbind enum users = no

       winbind expand groups (G)

           This option controls the maximum depth that winbindd will traverse when flattening
           nested group memberships of Windows domain groups. This is different from the winbind
           nested groups option which implements the Windows NT4 model of local group nesting.
           The "winbind expand groups" parameter specifically applies to the membership of domain
           groups.

           Be aware that a high value for this parameter can result in system slowdown as the
           main parent winbindd daemon must perform the group unrolling and will be unable to
           answer incoming NSS or authentication requests during this time.

           Default: winbind expand groups = 1

       winbind max clients (G)

           This parameter specifies the maximum number of clients the winbindd(8) daemon can
           connect with.

           Default: winbind max clients = 200

       winbind max domain connections (G)

           This parameter specifies the maximum number of simultaneous connections that the
           winbindd(8) daemon should open to the domain controller of one domain. Setting this
           parameter to a value greater than 1 can improve scalability with many simultaneous
           winbind requests, some of which might be slow.

           Note that if winbind offline logon is set to Yes, then only one DC connection is
           allowed per domain, regardless of this setting.

           Default: winbind max domain connections = 1

           Example: winbind max domain connections = 10

       winbind nested groups (G)

           If set to yes, this parameter activates the support for nested groups. Nested groups
           are also called local groups or aliases. They work like their counterparts in Windows:
           Nested groups are defined locally on any machine (they are shared between DC´s through
           their SAM) and can contain users and global groups from any trusted SAM. To be able to
           use nested groups, you need to run nss_winbind.

           Default: winbind nested groups = yes

       winbind normalize names (G)

           This parameter controls whether winbindd will replace whitespace in user and group
           names with an underscore (_) character. For example, whether the name "Space Kadet"
           should be replaced with the string "space_kadet". Frequently Unix shell scripts will
           have difficulty with usernames contains whitespace due to the default field separator
           in the shell. If your domain possesses names containing the underscore character, this
           option may cause problems unless the name aliasing feature is supported by your
           nss_info plugin.

           This feature also enables the name aliasing API which can be used to make domain user
           and group names to a non-qualified version. Please refer to the manpage for the
           configured idmap and nss_info plugin for the specifics on how to configure name
           aliasing for a specific configuration. Name aliasing takes precedence (and is mutually
           exclusive) over the whitespace replacement mechanism discussed previsouly.

           Default: winbind normalize names = no

           Example: winbind normalize names = yes

       winbind nss info (G)

           This parameter is designed to control how Winbind retrieves Name Service Information
           to construct a user´s home directory and login shell. Currently the following settings
           are available:

           ·   template - The default, using the parameters of template shell and template
               homedir)

           ·   <sfu | rfc2307 > - When Samba is running in security = ads and your Active
               Directory Domain Controller does support the Microsoft "Services for Unix" (SFU)
               LDAP schema, winbind can retrieve the login shell and the home directory
               attributes directly from your Directory Server. Note that retrieving UID and GID
               from your ADS-Server requires to use idmap config DOMAIN:backend = ad as well.

       Default: winbind nss info = template

       Example: winbind nss info = sfu

       winbind offline logon (G)

           This parameter is designed to control whether Winbind should allow to login with the
           pam_winbind module using Cached Credentials. If enabled, winbindd will store user
           credentials from successful logins encrypted in a local cache.

           Default: winbind offline logon = false

           Example: winbind offline logon = true

       winbind reconnect delay (G)

           This parameter specifies the number of seconds the winbindd(8) daemon will wait
           between attempts to contact a Domain controller for a domain that is determined to be
           down or not contactable.

           Default: winbind reconnect delay = 30

       winbind refresh tickets (G)

           This parameter is designed to control whether Winbind should refresh Kerberos Tickets
           retrieved using the pam_winbind module.

           Default: winbind refresh tickets = false

           Example: winbind refresh tickets = true

       winbind rpc only (G)

           Setting this parameter to yes forces winbindd to use RPC instead of LDAP to retrieve
           information from Domain Controllers.

           Default: winbind rpc only = no

       winbind separator (G)

           This parameter allows an admin to define the character used when listing a username of
           the form of DOMAIN \user. This parameter is only applicable when using the
           pam_winbind.so and nss_winbind.so modules for UNIX services.

           Please note that setting this parameter to + causes problems with group membership at
           least on glibc systems, as the character + is used as a special character for NIS in
           /etc/group.

           Default: winbind separator = ´\´

           Example: winbind separator = +

       winbind trusted domains only (G)

           This parameter is designed to allow Samba servers that are members of a Samba
           controlled domain to use UNIX accounts distributed via NIS, rsync, or LDAP as the
           uid´s for winbindd users in the hosts primary domain. Therefore, the user DOMAIN\user1
           would be mapped to the account user1 in /etc/passwd instead of allocating a new uid
           for him or her.

           This parameter is now deprecated in favor of the newer idmap_nss backend. Refer to the
           idmap_nss(8) man page for more information.

           Default: winbind trusted domains only = no

       winbind use default domain (G)

           This parameter specifies whether the winbindd(8) daemon should operate on users
           without domain component in their username. Users without a domain component are
           treated as is part of the winbindd server´s own domain. While this does not benefit
           Windows users, it makes SSH, FTP and e-mail function in a way much closer to the way
           they would in a native unix system.

           This option should be avoided if possible. It can cause confusion about
           responsibilities for a user or group. In many situations it is not clear whether
           winbind or /etc/passwd should be seen as authoritative for a user, likewise for
           groups.

           Default: winbind use default domain = no

           Example: winbind use default domain = yes

       wins hook (G)

           When Samba is running as a WINS server this allows you to call an external program for
           all changes to the WINS database. The primary use for this option is to allow the
           dynamic update of external name resolution databases such as dynamic DNS.

           The wins hook parameter specifies the name of a script or executable that will be
           called as follows:

           wins_hook operation name nametype ttl IP_list

           ·   The first argument is the operation and is one of "add", "delete", or "refresh".
               In most cases the operation can be ignored as the rest of the parameters provide
               sufficient information. Note that "refresh" may sometimes be called when the name
               has not previously been added, in that case it should be treated as an add.

           ·   The second argument is the NetBIOS name. If the name is not a legal name then the
               wins hook is not called. Legal names contain only letters, digits, hyphens,
               underscores and periods.

           ·   The third argument is the NetBIOS name type as a 2 digit hexadecimal number.

           ·   The fourth argument is the TTL (time to live) for the name in seconds.

           ·   The fifth and subsequent arguments are the IP addresses currently registered for
               that name. If this list is empty then the name should be deleted.

       An example script that calls the BIND dynamic DNS update program nsupdate is provided in
       the examples directory of the Samba source code.

       No default

       wins proxy (G)

           This is a boolean that controls if nmbd(8) will respond to broadcast name queries on
           behalf of other hosts. You may need to set this to yes for some older clients.

           Default: wins proxy = no

       wins server (G)

           This specifies the IP address (or DNS name: IP address for preference) of the WINS
           server that nmbd(8) should register with. If you have a WINS server on your network
           then you should set this to the WINS server´s IP.

           You should point this at your WINS server if you have a multi-subnetted network.

           If you want to work in multiple namespaces, you can give every wins server a ´tag´.
           For each tag, only one (working) server will be queried for a name. The tag should be
           separated from the ip address by a colon.

               Note
               You need to set up Samba to point to a WINS server if you have multiple subnets
               and wish cross-subnet browsing to work correctly.
           See the chapter in the Samba3-HOWTO on Network Browsing.

           Default: wins server =

           Example: wins server = mary:192.9.200.1 fred:192.168.3.199 mary:192.168.2.61 # For
           this example when querying a certain name, 192.19.200.1 will be asked first and if
           that doesn´t respond 192.168.2.61. If either of those doesn´t know the name
           192.168.3.199 will be queried.

           Example: wins server = 192.9.200.1 192.168.2.61

       wins support (G)

           This boolean controls if the nmbd(8) process in Samba will act as a WINS server. You
           should not set this to yes unless you have a multi-subnetted network and you wish a
           particular nmbd to be your WINS server. Note that you should NEVER set this to yes on
           more than one machine in your network.

           Default: wins support = no

       workgroup (G)

           This controls what workgroup your server will appear to be in when queried by clients.
           Note that this parameter also controls the Domain name used with the security = domain
           setting.

           Default: workgroup = WORKGROUP

           Example: workgroup = MYGROUP

       writable

           This parameter is a synonym for writeable.

       writeable (S)

           Inverted synonym for read only.

           Default: writeable = no

       write cache size (S)

           If this integer parameter is set to non-zero value, Samba will create an in-memory
           cache for each oplocked file (it does not do this for non-oplocked files). All writes
           that the client does not request to be flushed directly to disk will be stored in this
           cache if possible. The cache is flushed onto disk when a write comes in whose offset
           would not fit into the cache or when the file is closed by the client. Reads for the
           file are also served from this cache if the data is stored within it.

           This cache allows Samba to batch client writes into a more efficient write size for
           RAID disks (i.e. writes may be tuned to be the RAID stripe size) and can improve
           performance on systems where the disk subsystem is a bottleneck but there is free
           memory for userspace programs.

           The integer parameter specifies the size of this cache (per oplocked file) in bytes.

           Default: write cache size = 0

           Example: write cache size = 262144 # for a 256k cache size per file

       write list (S)

           This is a list of users that are given read-write access to a service. If the
           connecting user is in this list then they will be given write access, no matter what
           the read only option is set to. The list can include group names using the @group
           syntax.

           Note that if a user is in both the read list and the write list then they will be
           given write access.

           By design, this parameter will not work with the security = share in Samba 3.0.

           Default: write list =

           Example: write list = admin, root, @staff

       write raw (G)

           This parameter controls whether or not the server will support raw write SMB´s when
           transferring data from clients. You should never need to change this parameter.

           Default: write raw = yes

       wtmp directory (G)

           This parameter is only available if Samba has been configured and compiled with the
           option --with-utmp. It specifies a directory pathname that is used to store the wtmp
           or wtmpx files (depending on the UNIX system) that record user connections to a Samba
           server. The difference with the utmp directory is the fact that user info is kept
           after a user has logged out.

           By default this is not set, meaning the system will use whatever utmp file the native
           system is set to use (usually /var/run/wtmp on Linux).

           Default: wtmp directory =

           Example: wtmp directory = /var/log/wtmp

WARNINGS

       Although the configuration file permits service names to contain spaces, your client
       software may not. Spaces will be ignored in comparisons anyway, so it shouldn´t be a
       problem - but be aware of the possibility.

       On a similar note, many clients - especially DOS clients - limit service names to eight
       characters.  smbd(8) has no such limitation, but attempts to connect from such clients
       will fail if they truncate the service names. For this reason you should probably keep
       your service names down to eight characters in length.

       Use of the [homes] and [printers] special sections make life for an administrator easy,
       but the various combinations of default attributes can be tricky. Take extreme care when
       designing these sections. In particular, ensure that the permissions on spool directories
       are correct.

VERSION

       This man page is correct for version 3 of the Samba suite.

SEE ALSO

       samba(7), smbpasswd(8), swat(8), smbd(8), nmbd(8), smbclient(1), nmblookup(1),
       testparm(1).

AUTHOR

       The original Samba software and related utilities were created by Andrew Tridgell. Samba
       is now developed by the Samba Team as an Open Source project similar to the way the Linux
       kernel is developed.

       The original Samba man pages were written by Karl Auer. The man page sources were
       converted to YODL format (another excellent piece of Open Source software, available at
       ftp://ftp.icce.rug.nl/pub/unix/) and updated for the Samba 2.0 release by Jeremy Allison.
       The conversion to DocBook for Samba 2.2 was done by Gerald Carter. The conversion to
       DocBook XML 4.2 for Samba 3.0 was done by Alexander Bokovoy.