Provided by: samba-common_3.0.28a-1ubuntu4_i386 bug


       nmblookup - NetBIOS over TCP/IP client used to lookup NetBIOS names


       nmblookup   [-M]   [-R]  [-S]  [-r]  [-A]  [-h]  [-B<broadcastaddress>]
        [-U<unicastaddress>]       [-d<debuglevel>]        [-s<smbconfigfile>]
        [-i<NetBIOSscope>] [-T] [-f] {name}


       This tool is part of the samba(7) suite.

       nmblookup  is  used to query NetBIOS names and map them to IP addresses
       in a network using NetBIOS over TCP/IP queries. The options  allow  the
       name  queries  to be directed at a particular IP broadcast area or to a
       particular machine. All queries are done over UDP.


          Searches for a master browser by looking up the  NetBIOS  name  name
          with a type of 0x1d. If
           name is "-" then it does a lookup on the special name __MSBROWSE__.
          Please note that in order to use the name "-", you need to make sure
          "-" isn’t parsed as an argument, e.g. use : nmblookup -M -- -.

          Set  the  recursion  desired  bit  in  the  packet to do a recursive
          lookup. This is used when sending a name query to a machine  running
          a  WINS  server  and  the user wishes to query the names in the WINS
          server. If this bit  is  unset  the  normal  (broadcast  responding)
          NetBIOS  processing  code on a machine is used instead. See RFC1001,
          RFC1002 for details.

          Once the name query has returned an IP address then do a node status
          query  as  well.  A  node  status  query  returns  the NetBIOS names
          registered by a host.

          Try and bind to UDP port 137 to send and receive UDP datagrams.  The
          reason  for  this option is a bug in Windows 95 where it ignores the
          source port of the requesting packet and only replies  to  UDP  port
          137. Unfortunately, on most UNIX systems root privilege is needed to
          bind to this port, and in addition, if the nmbd(8) daemon is running
          on this machine it also binds to this port.

          Interpret  name  as an IP Address and do a node status query on this

       -n <primary NetBIOS name>
          This option allows you to override the NetBIOS name that Samba  uses
          for itself. This is identical to setting the

          parameter in the smb.conf file. However, a command line setting will
          take precedence over settings in smb.conf.

       -i <scope>
          This  specifies  a  NetBIOS  scope  that  nmblookup  will   use   to
          communicate  with  when generating NetBIOS names. For details on the
          use of NetBIOS scopes,  see  rfc1001.txt  and  rfc1002.txt.  NetBIOS
          scopes  are very rarely used, only set this parameter if you are the
          system administrator in  charge  of  all  the  NetBIOS  systems  you
          communicate with.

          Set  the  SMB  domain  of  the  username. This overrides the default
          domain which is the  domain  defined  in  smb.conf.  If  the  domain
          specified  is  the  same  as the servers NetBIOS name, it causes the
          client to log on using the servers local  SAM  (as  opposed  to  the
          Domain SAM).

       -O socket options
          TCP  socket  options  to  set  on  the client socket. See the socket
          options parameter in the smb.conf manual page for the list of  valid

          Print a summary of command line options.

       -B <broadcast address>
          Send  the  query to the given broadcast address. Without this option
          the default behavior of nmblookup  is  to  send  the  query  to  the
          broadcast  address of the network interfaces as either auto-detected
          or defined in the interfaces parameter of the smb.conf(5) file.

       -U <unicast address>
          Do a unicast query to the specified address or host unicast address.
          This  option  (along  with  the -R option) is needed to query a WINS

          Prints the program version number.

       -s <configuration file>
          The file specified contains the configuration  details  required  by
          the  server.  The  information in this file includes server-specific
          information  such  as  what  printcap  file  to  use,  as  well   as
          descriptions  of all the services that the server is to provide. See
          smb.conf for more information. The default configuration  file  name
          is determined at compile time.

          level  is  an  integer  from  0  to  10.  The  default value if this
          parameter is not specified is zero.

          The higher this value, the more detail will be  logged  to  the  log
          files  about the activities of the server. At level 0, only critical
          errors and serious warnings will be logged. Level 1 is a  reasonable
          level  for  day-to-day  running  -  it  generates  a small amount of
          information about operations carried out.

          Levels above 1 will generate considerable amounts of log  data,  and
          should only be used when investigating a problem. Levels above 3 are
          designed for use only by developers and generate HUGE amounts of log
          data, most of which is extremely cryptic.

          Note that specifying this parameter here will override the

          parameter in the smb.conf file.

          Base  directory  name for log/debug files. The extension ".progname"
          will be appended (e.g. log.smbclient,  log.smbd,  etc...).  The  log
          file is never removed by the client.

          This causes any IP addresses found in the lookup to be looked up via
          a reverse DNS lookup into a DNS name, and printed out before each

          IP address .... NetBIOS name

          pair that is the normal output.

          Show which flags apply to the name that has been looked up. Possible
          answers  are  zero  or  more of: Response, Authoritative, Truncated,
          Recursion_Desired, Recursion_Available, Broadcast.

          This is the NetBIOS name being queried. Depending upon the  previous
          options  this may be a NetBIOS name or IP address. If a NetBIOS name
          then  the  different  name  types  may  be  specified  by  appending
          ’#<type>’  to the name. This name may also be ’*’, which will return
          all registered names within a broadcast area.


       nmblookup can be used to query a WINS server (in the same way  nslookup
       is  used  to query DNS servers). To query a WINS server, nmblookup must
       be called like this:

       nmblookup -U server -R ’name’

       For example, running :

       nmblookup -U -R ’IRIX#1B’

       would query the WINS server for the domain master browser (1B
       name type) for the IRIX workgroup.


       This man page is correct for version 3.0 of the Samba suite.


       nmbd(8), samba(7), and smb.conf(5).


       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  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.