Provided by: pure-ftpd-common_1.0.50-2.1_all bug


       pure-ftpd - simple File Transfer Protocol server


       pure-ftpd  [-0]  [-1]  [-2 cert_file[,key_file]] [-3 certd_socket] [-4] [-6] [-a gid] [-A]
       [-b] [-B] [-c clients] [-C cnx/ip] [-d [-d]] [-D] [-e] [-E]  [-f  facility]  [-F  fortunes
       file]  [-g  pidfile]  [-G]  [-H]  [-i]  [-I]  [-j]  [-J  ciphers] [-k percentage] [-K] [-l
       authentication[:config  file]]  [-L  max  files:max   depth]   [-m   maxload]   [-M]   [-n
       maxfiles:maxsize]  [-N]  [-o]  [-O format:log file] [-p first:last] [-P ip address or host
       name]  [-q  upload:download  ratio]  [-Q  upload:download  ratio]  [-r]  [-R]   [-s]   [-S
       [address,][port]]  [-t  upload bandwidth:download bandwidth] [-T upload bandwidth:download
       bandwidth] [-u uid] [-U umask files:umask dirs] [-v bonjour name]  [-V  ip  address]  [-w]
       [-W] [-x] [-X] [-y max user sessions:max anon sessions] [-Y tls behavior] [-z] [-Z]

       Alternative style:
       -0 --notruncate
       -1 --logpid
       -2 --certfile
       -3 --extcert
       -4 --ipv4only
       -6 --ipv6only
       -a --trustedgid
       -A --chrooteveryone
       -b --brokenclientscompatibility
       -B --daemonize
       -c --maxclientsnumber
       -C --maxclientsperip
       -d --verboselog
       -D --displaydotfiles
       -e --anonymousonly
       -E --noanonymous
       -f --syslogfacility
       -F --fortunesfile
       -g --pidfile
       -G --norename
       -h --help
       -H --dontresolve
       -i --anonymouscantupload
       -I --maxidletime
       -j --createhomedir
       -J --tlsciphersuite
       -k --maxdiskusagepct
       -K --keepallfiles
       -l --login
       -L --limitrecursion
       -m --maxload
       -M --anonymouscancreatedirs
       -n --quota
       -N --natmode
       -o --uploadscript
       -O --altlog
       -p --passiveportrange
       -P --forcepassiveip
       -q --anonymousratio
       -Q --userratio
       -r --autorename
       -R --nochmod
       -s --antiwarez
       -S --bind
       -t --anonymousbandwidth
       -T --userbandwidth
       -u --minuid
       -U --umask
       -v --bonjour
       -V --trustedip
       -w --allowuserfxp
       -W --allowanonymousfxp
       -x --prohibitdotfileswrite
       -X --prohibitdotfilesread
       -y --peruserlimits
       -Y --tls
       -z --allowdotfiles
       -Z --customerproof


       Pure-FTPd is a small, simple server for the old and hairy File Transfer Protocol, designed
       to use less resources than older servers, be smaller and very secure, and to never execute
       any external program.

       It  support most-used features and commands of FTP (including many modern extensions), and
       leaves out everything which is  deprecated,  meaningless,  insecure,  or  correlates  with

       IPv6 is fully supported.


       -0     When  a  file  is uploaded and there is already a previous version of the file with
              the same name, the old file will neither get removed nor  truncated.   Upload  will
              take  place  in a temporary file and once the upload is complete, the switch to the
              new version will be atomic. This option should not be used  together  with  virtual

       -1     Add the PID to the syslog output. Ignored if -f none is set.

       -2 cert_file[,key_file]
              When  using  TLS, set the path to the certificate file. The certificate and its key
              can be be bundled into a single file, or the key can be in a distinct file.

       -3 path
              Path to the pure-certd UNIX socket.

       -4     Listen only to IPv4 connections.

       -6     Listen only to IPv6 connections.

       -a gid Regular users will be chrooted to their home directories, unless they belong to the
              specified  gid. Note that root is always trusted, and that chroot() occurs only for
              anonymous ftp without this option.

       -A     Chroot() everyone, but root.

       -b     Be broken. Turns on some compatibility hacks for shoddy  clients,  and  for  broken
              Netfilter gateways.

       -B     Start the standalone server in background (daemonize).

       -c clients
              Allow a maximum of clients to be connected.  clients must be at least 1, and if you
              combine it with -p it will be forced down to half the number of ports specified  by
              -p.   If  more  than  clients are connected, new clients are rejected at once, even
              clients wishing to upload, or to log in as normal users. Therefore, it is advisable
              to use -m as primary overload protection. The default value is 50.

       -C max connection per ip
              Limit  the number of simultaneous connections coming from the same IP address. This
              is yet another very  effective  way  to  prevent  stupid  denial  of  services  and
              bandwidth  starvation  by a single user.  It works only when the server is launched
              in standalone mode (if you use a super-server, it is supposed to do that).  If  the
              server  is launched with -C 2 , it doesn't mean that the total number of connection
              is limited to 2.  But the same client, coming from the same machine  (or  at  least
              the  same  IP),  can't  have  more than two simultaneous connections. This features
              needs some memory to track IP addresses, but it's recommended to use it.

       -d     turns on debug logging. Every command is logged, except that the argument  to  PASS
              is changed to "<password>". If you repeat -d , responses too are logged.

       -e     Only allow anonymous users to log in.

       -E     Only allow authenticated login. Anonymous users are prohibited.

       -f facility
              makes ftpd use facility for all syslog(3) messages.  facility defaults to ftp.  The
              facility names are normally listed in /usr/include/sys/syslog.h.  Note that  if  -f
              is  not the first option on the command line, a couple of messages may be logged to
              local2 before the -f option is parsed.  Use -f none to disable logging.

       -F fortunes file
              Display a funny random message in the initial login banner. The random cookies  are
              extracted  from  a  text file, in the standard fortune format. If you installed the
              fortune package, you should have a directory  (usually  /usr/share/fortune  )  with
              binary files ( xxxx.dat ) and text files (without the .dat extension).

       -g pidfile
              In standalone mode, write the pid to that file in instead of /var/run/

       -G     When this option is enabled, people can no more change the name of already uploaded
              files, even if they own those files or their directory.

       -H     Don't   resolve   host   names   (""   will   be   logged   instead  of
              ""). It can significantly speed up connections and reduce  bandwidth
              usage on busy servers. Use it especially on public FTP sites.

       -i     Disallow  upload  for  anonymous  users,  whatever  directory permissions are. This
              option is especially useful for virtual hosting, to avoid your users  create  warez
              sites in their account.

       -I timeout
              Change the maximum idle time. The timeout is in minutes, and defaults to 15.

       -j     If  the  home directory of a user doesn't exist, automatically create it. The newly
              created home directory belongs to the user, and permissions are  set  according  to
              the  current  directory  mask.  To avoid local attacks, the parent directory should
              never belong to an untrusted user.

       -J ciphers
              Set the list of ciphers that will be accepted for TLS connections.

       -k percentage
              Disallow upload if the partition is more than percentage full. Example: -k 95  will
              ensure that your disk will never get filled more than 95% by FTP users.

       -K     Allow  users to resume and upload files, but NOT to delete them. Directories can be
              removed, but only if they are empty.

       -l authentication:file
              Enable a new authentication method.  It  can  be  one  of:  -l  unix  For  standard
              (/etc/passwd)  authentication.  -l pam For PAM authentication.  -l ldap:LDAP config
              file For LDAP directories.  -l mysql:MySQL config file  For  MySQL  databases.   -l
              pgsql:Postgres  config file For Postgres databases.  -l puredb:PureDB database file
              For  PureDB  databases.   -l  extauth:path  to  pure-authd  socket   For   external
              authentication handlers.
              Different authentication methods can be mixed together. For instance if you run the
              server  with  -lpuredb:/etc/pure-ftpd/pwd.pdb  -lmysql:/etc/pure-ftpd/  -lunix
              Accounts  will  first be authenticated from a PureDB database. If it fails, a MySQL
              server will be asked. If the account is still not found is the  database,  standard
              unix  accounts  will  be scanned. Authentication methods are tried in the order you
              give the -l options, if you do not give -l, then the decision comes from configure,
              if PAM is built in, it is used, if not, then UNIX (/etc/passwd) is used by default.
              See the README.LDAP and README.MySQL files for info about the built-in LDAP and SQL
              directory support.

       -L max files:max depth
              Avoid denial-of-service attacks by limiting the number of displayed files in a 'ls'
              and  the  maximum  depth  of  a  recursive  'ls'.  Defaults  are 2000:5 (2000 files
              displayed for a single 'ls' and walk through 5 subdirectories max).

       -m load
              Do not allow anonymous users to download files if the load is above load  when  the
              user  connects.  Uploads  and  file listings are still allowed, as are downloads by
              real users. The user is not told about this until he/she tries to download a file.

       -M     Allow anonymous users to create directories.

       -n maxfiles:maxsize
              Enable virtual quotas When virtual quotas are enabled, .ftpquota files are created,
              and  the number of files for a user is restricted to 'maxfiles'. The max total size
              of his directory is also restricted to 'maxsize' Megabytes. Members of the  trusted
              group aren't subject to quotas.

       -N     NAT  mode.  Force  active mode. If your FTP server is behind a NAT box that doesn't
              support applicative FTP  proxying,  or  if  you  use  port  redirection  without  a
              transparent  FTP  proxy,  use this. Well... the previous sentence isn't very clear.
              Okay: if your network looks like this:
              and if you want people coming from the internet to have access to your FTP  server,
              please  try  without this option first. If Netscape clients can connect without any
              problem, your NAT gateway rulez. If Netscape doesn't  display  directory  listings,
              your NAT gateway sucks. Use -N as a workaround.

       -o     Enable pure-uploadscript.

       -O format:log file
              Record  all  file  transfers  into  a  specific log file, in an alternative format.
              Currently, three formats are supported: CLF, Stats, W3C and xferlog.
              If you add
              -O clf:/var/log/pureftpd.log
              to your starting options, Pure-FTPd will log transfers in /var/log/pureftpd.log  in
              a format similar to the Apache web server in default configuration.
              If you add
              -O stats:/var/log/pureftpd.log
              to  your  starting  options,  Pure-FTPd will create accurate log files designed for
              traffic analys software like ftpStats.
              If you add
              -O w3c:/var/log/pureftpd.log
              to your starting options, Pure-FTPd will create W3C-conformant log files.
              For security purposes, the path must be absolute (eg.   /var/log/pureftpd.log,  not

       -p first:last
              Use  only  ports  in  the range first to last inclusive for passive-mode downloads.
              This means that clients will not try to open connections to TCP ports  outside  the
              range first - last, which makes pure-ftpd more compatible with packet filters. Note
              that the maximum number of clients (specified with -c) is forced down to (last +  1
              -  first)/2 if it is greater, as the default is. (The syntax for the port range is,
              conveniently, the same as that of iptables).

       -P ip address or host name
              Force the specified IP address in reply to a PASV/EPSV command. If  the  server  is
              behind  a  masquerading  (NAT)  box  that  doesn't  properly  handle  stateful  FTP
              masquerading, put the ip address of that  box  here.  If  you  have  a  dynamic  IP
              address,  you can use a symbolic host name (probably the one of your gateway), that
              will be resolved every time a new client will connect.

       -q upload:download
              Enable an upload/download ratio for anonymous users (ex: -q 1:5 means that 1 Mb  of
              goodies have to be uploaded to leech 5 Mb).

       -Q upload:download
              Enable ratios for anonymous and non-anonymous users. If the -a option is also used,
              users from the trusted group have no ratio.

       -r     Never overwrite existing files. Uploading a file whose name already exists cause an
              automatic rename. Files are called xyz.1, xyz.2, xyz.3, etc.

       -R     Disallow  users  (even  non-anonymous  ones) usage of the CHMOD command. On hosting
              services, it may prevent newbies from doing mistakes, like setting bad  permissions
              on their home directory. Only root can use CHMOD when this switch is enabled.

       -s     Don't  allow  anonymous  users  to  retrieve files owned by "ftp" (generally, files
              uploaded by other anonymous users).

       -S [{ip address|hostname}] [,{port|service name}]
              This option is only effective when the server is launched as a  standalone  server.
              Connections are accepted on the specified IP and port. IPv4 and IPv6 are supported.
              Numeric  and  fully-qualified  host  names  are  accepted.  A  service  name   (see
              /etc/services) can be used instead of a numeric port number.

       -t bandwidth
              or  -t  upload  bandwidth:download  bandwidth  Enable process priority lowering and
              bandwidth throttling for anonymous users. Delay should be in kilobytes/seconds.

       -T bandwidth
              or -T upload bandwidth:download bandwidth  Enable  process  priority  lowering  and
              bandwidth  throttling  for  *ALL*  users.   Pure-FTPd  should  have been explicitly
              compiled with throttling support to have these flags work.  It is possible to  have
              different  bandwidth limits for uploads and for downloads. '-t' and '-T' can indeed
              be followed by two numbers delimited by a column (':'). The  first  number  is  the
              upload  bandwidth  and  the  next one applies only to downloads. One of them can be
              left blank which means infinity.  A single number without any column means that the
              same limit applies to upload and download.

       -u uid Do  not  allow  uids below uid to log in (typically, low-numbered uids are used for
              administrative  accounts).   -u  100  is  sufficient  to   deny   access   to   all
              administrative  accounts  on  many linux boxes, where 99 is the last administrative
              account. Anonymous FTP is allowed even if the uid of the ftp user is  smaller  than
              uid.   -u 1 denies access only to root accounts. The default is to allow FTP access
              to all accounts.

       -U umask files:umask dirs
              Change the mask for creation of new files and  directories.  The  default  are  133
              (files  are  readable  -but  not  writable- by other users) and 022 (same thing for
              directory, with the execute bit on).  If new files should only be readable  by  the
              user,  use 177:077. If you want uploaded files to be executable, use 022:022 (files
              will be readable by other people) or 077:077 (files will only be readable by  their

       -v bonjour name
              Set the Bonjour name of the service (only available on MacOS X when Bonjour support
              is compiled in).

       -V ip address
              Allow non-anonymous FTP access only on this specific local IP address. All other IP
              addresses  are only anonymous. With that option, you can have routed IPs for public
              access, and a local IP (like 10.x.x.x) for administration.  You  can  also  have  a
              routable  trusted  IP  protected by firewall rules, and only that IP can be used to
              login as a non-anonymous user.

       -w     Enable support for the FXP protocol, for non-anonymous users only.

       -W     Enable the FXP protocol for everyone.  FXP IS AN UNSECURE PROTOCOL. NEVER ENABLE IT

       -x     In normal operation mode, authenticated users can read/write files beginning with a
              dot ('.'). Anonymous users can't, for security reasons (like changing banners or  a
              forgotten  .rhosts). When '-x' is used, authenticated users can download dot-files,
              but not overwrite/create them, even if they own them. That  way,  you  can  prevent
              hosted users from messing .qmail files.

       -X     This  flag  is identical to the previous one (writing dot-files is prohibited), but
              in addition, users can't even *read* files and directories  beginning  with  a  dot
              (like "cd .ssh").

       -y per user max sessions:max anonymous sessions
              This  switch  enables  per-user  concurrency  limits. Two values are separated by a
              column. The first one is the max number of concurrent sessions for a single  login.
              The second one is the maximum number of anonoymous sessions.

       -Y tls behavior
              -Y 0 (default) disables TLS security mechanisms.
              -Y 1 Accept both normal sessions and TLS ones.
              -Y  2  refuses  connections  that  aren't  using TLS security mechanisms, including
              anonymous ones.
              -Y 3 refuses connections that aren't using  TLS  security  mechanisms,  and  refuse
              cleartext data channels as well.
              The server must have been compiled with TLS support and a valid certificate must be
              in place to accept encrypted sessions.

       -z     Allow anonymous users to read files and directories starting with a dot ('.').

       -Z     Add safe guards against common customer mistakes (like chmod 0 on their own  files)


       Some of the complexities of older servers are left out.

       This  version  of  pure-ftpd can use PAM for authentication. If you want it to consult any
       files like /etc/shells or /etc/ftpd/ftpusers consult pam docs. LDAP  directories  and  SQL
       databases are also supported.

       Anonymous users are authenticated in any of three ways:

       1.  The  user logs in as "ftp" or "anonymous" and there is an account called "ftp" with an
       existing home directory. This server does not ask anonymous users for an email address  or
       other password.

       2.  The  user  connects  to  an  IP  address  which resolves to the name of a directory in
       /etc/pure-ftpd/pure-ftpd (or a symlink in that directory to a real directory),  and  there
       is  an  account  called  "ftp"  (which  does not need to have a valid home directory). See
       Virtual Servers below.

       Ftpd does a chroot(2) to the relevant base directory when an anonymous user logs in.

       Note that ftpd allows remote users to log in as root if the password is known and  -u  not


       If  a  user's  home  directory  is  /path/to/home/./,  FTP sessions under that UID will be
       chroot()ed. In addition, if a users's  home  directory  is  /path/to/home/./directory  the
       session will be chroot()ed to /path/to/home and the FTP session will start in 'directory'.

       As  noted  above,  this  pure-ftpd  omits several features that are required by the RFC or
       might be considered useful at first. Here is a list of the most important omissions.

       On-the-fly tar is not supported, for several reasons. I feel that users who  want  to  get
       many  files  should  use  a  special  FTP  client  such  as  "mirror," which also supports
       incremental fetch. I don't want to either add several hundred lines of code to create  tar
       files or execute an external tar. Finally, on-the-fly tar distorts log files.

       On-the-fly  compression is left out too. Most files on an FTP site are compressed already,
       and if a file isn't, there presumably is a reason why. (As for  decompression:  Don't  FTP
       users waste bandwidth enough without help from on-the-fly decompression?)


       Shortcuts  for  the  "cd"  command  can be set up if the server has been compiled with the
       --with-diraliases feature.

       To enable directory aliases, create a file called /etc/pure-ftpd/pureftpd-dir-aliases  and
       alternate lines of alias names and associated directories.


       This  server  leaves  out some of the commands and features that have been used to subvert
       anonymous FTP servers in the past, but still you have to be a little bit careful in  order
       to support anonymous FTP without risk to the rest of your files.

       Make ~ftp and all files and directories below this directory owned by some user other than
       "ftp," and only the .../incoming directory/directories writable by "ftp." It  is  probably
       best  if all directories are writable only by a special group such as "ftpadmin" and "ftp"
       is not a member of this group.

       If you do not trust the local users, put ~ftp on a  separate  partition,  so  local  users
       can't hard-link unapproved files into the anonymous FTP area.

       Use  of  the -s option is strongly suggested. (Simply add "-s" to the end of the ftpd line
       in /etc/inetd.conf to enable it.)

       Most other FTP servers require that a number of files  such  as  ~ftp/bin/ls  exist.  This
       server does not require that any files or directories within ~/ftp whatsoever exist, and I
       recommend that all such unnecessary files are removed (for no real reason).

       It may be worth considering to run the anonymous FTP service as a virtual server,  to  get
       automatic logins and to firewall off the FTP address/port to which real users can log in.

       If  your  server  is  a  public FTP site, you may want to allow only 'ftp' and 'anonymous'
       users to log in. Use the -e option for this. Real accounts will be ignored  and  you  will
       get a secure, anonymous-only FTP server.


       The files <ftproot>/.banner and .message are magical.

       If  there  is a file called .banner in the root directory of the anonymous FTP area, or in
       the root directory of a virtual host, and it is shorter than 1024  bytes,  it  is  printed
       upon  login. (If the client does not log in explicitly, and an implicit login is triggered
       by a CWD or CDUP command, the banner is not printed.  This  is  regrettable  but  hard  to

       If  there  is  a  file called .message in any directory and it is shorter than 1024 bytes,
       that file is printed whenever a user enters that directory using CWD or CDUP.


       You can run several different anonymous FTP servers  on  one  host,  by  giving  the  host
       several IP addresses with different DNS names.

       Here  are  the  steps  needed  to create an extra server using an IP alias on linux 2.4.x,
       called "" on address on the IP alias eth0.

       1. Create an "ftp" account if you do not have one. It it best if the account does not have
       a  valid  home  directory  and  shell.  I  prefer to make /dev/null the ftp account's home
       directory and shell.  Ftpd uses this account to set the anonymous users' uid.

       2. Create a directory as described in Anonymous FTP and make a symlink  called  /etc/pure-
       ftpd/pure-ftpd/ which points to this directory.

       3. Make sure your kernel has support for IP aliases.

       4. Make sure that the following commands are run at boot:

         /sbin/ifconfig eth0:1

       That should be all. If you have problems, here are some things to try.

       First,   symlink   /etc/pure-ftpd/pure-ftpd/  to  some  directory  and  say  "ftp
       localhost". If that doesn't log you in, the problem is with ftpd.

       If not, "ping -v" and/or "ping -v" from the same host. If this
       does not work, the problem is with the IP alias.

       Next,  try  "ping  -v"  from  a  host  on  the local ethernet, and afterwards
       "/sbin/arp -a". If is listed among the ARP entries with the  correct  hardware
       address,  the  problem  is  probably  with the IP alias. If is listed, but has
       hardware address 0:0:0:0:0:0, then proxy-ARP isn't working.

       If none of that helps, I'm stumped. Good luck.

       Warning: If you setup a virtual hosts, normal users will not be able  to  login  via  this
       name,  so  don't  create  link/directory  in  /etc/pure-ftpd/pure-ftpd  for  your  regular


       /etc/passwd is used via libc (and PAM is this case), to get the uid and home directory  of
       normal  users,  the uid and home directory of "ftp" for normal anonymous ftp, and just the
       uid of "ftp" for virtual ftp hosts.

       /etc/shadow is used like /etc/passwd if shadow support is enabled.

       /etc/group is used via libc, to get the group membership of normal users.

       /proc/net/tcp is used to count existing FTP connections, if the -c or -p options are used

       /etc/pure-ftpd/pure-ftpd/<ip address> is the base directory for the <ip  address>  virtual
       ftp  server,  or  a  symbolic link to its base directory.  Ftpd does a chroot(2) into this
       directory when a user logs in to <ip address>, thus symlinks outside this  directory  will
       not work.

       ~ftp  is  the  base directory for "normal" anonymous FTP.  Ftpd does a chroot(2) into this
       directory when an anonymous user logs in, thus symlinks outside this  directory  will  not


       The behaviour of LIST and NLST is a tricky issue. Few servers send RFC-compliant responses
       to LIST, and some clients depend on non-compliant responses.

       This server uses glob(3) to do filename globbing.

       The response to NLST is by default similar to that of  ls(1),  and  that  to  LIST  is  by
       default  similar  to that of ls -l or ls -lg on most Unix systems, except that the "total"
       count is meaningless.  Only regular  files,  directories  and  symlinks  are  shown.  Only
       important ls options are supported:

       -1     Undoes -l and -C.

       -a     lists even files/directories whose names begin with ".".

       -C     lists files in as many colums as will fit on the screen. Undoes -1 and -l.

       -d     lists argument directories' names rather their contents.

       -D     List  files  beginning  with a dot ('.') even when the client doesn't append the -a
              option to the list command.

       -F     appends '*' to executable regular files, '@' to symlinks and '/' to directories.

       -l     shows various details about the file, including file group. See ls(1) for  details.
              Undoes -1 and -C.

       -r     reverses  the  sorting  order  (modifies  -S  and  -t  and the default alphabetical

       -R     recursively descends into subdirectories of the argument directories.

       -S     Sorts by file size instead of by name. Undoes -t.

       -t     Sorts by file modification time instead of by name. Undoes -S.


       Here are the FTP commands supported by this server.


       Please  report  bugs  to the mailing-list (see below).  Pure-FTPd looks very stable and is
       used on production servers. However it comes with no warranty and it can have  nasty  bugs
       or security flaws.



       See the mailing-list on


       Troll-FTPd  was  written  by  Arnt  Gulbrandsen <> and copyright 1995-2002
       Troll Tech AS, Waldemar Thranes gate 98B, N-0175 Oslo, Norway, fax +47 22806380.

       Pure-FTPd is (C)opyleft 2001-2021 by Frank DENIS <j at pureftpd dot org>.

       This software is covered by the BSD license.

        Arnt Gulbrandsen,
        Troll Tech AS,
        Janos Farkas,
        August Fullford,
        Ximenes Zalteca,
        Patrick Michael Kane,
        Arkadiusz Miskiewicz,
        Michael K. Johnson,
        Kelley Lingerfelt,
        Sebastian Andersson,
        Andreas Westin,
        Jason Lunz,
        Mathias Gumz,
        Claudiu Costin,
        Paul Lasarev,
        Jean-Mathieux Schaffhauser,
        Emmanuel Hocdet,
        Sami Koskinen,
        Sami Farin,
        Luis Llorente Campo,
        Peter Pentchev,
        Darren Casey,
        The Regents of the University of California,
        Theo de Raadt (OpenBSD),
        Matthias Andree,
        Isak Lyberth,
        Steve Reid,
        RSA Data Security Inc,
        Dmtry Lebkov,
        Johan Huisman,
        Thorsten Kukuk,
        Jan van Veen,
        Roger Constantin Demetrescu,
        Stefano F.,
        Robert Varga,
        James Metcalf,
        Im Eunjea,
        Philip Gladstone,
        Kenneth Stailey,
        Brad Smith,
        Ulrik Sartipy,
        Cindy Marasco,
        Nicolas Doye,
        Thomas Briggs,
        Stanton Gallegos,
        Florin Andrei,
        Chan Wilson,
        Bjoern Metzdorf,
        Ben Gertzfield,
        Akhilesch Mritunjai,
        Dawid Szymanski,
        Kurt Inge Smadal,
        Alex Dupre,
        Gabriele Vinci,
        Andrey Ulanov,
        Fygul Hether,
        Jeffrey Lim,
        Ying-Chieh Liao,
        Johannes Erdfelt,
        Martin Sarfy,
        Clive Goodhead,
        Aristoteles Pagaltzis,
        Stefan Hornburg,
        Mehmet Cokcevik,
        Brynjar Eide,
        Torgnt Wernersson,
        Banhalmi Csaba,
        Volodin D,
        Oriol Magran,
        Jui-Nan Lin,
        Patrick Gosling,
        Marc Balmer,
        Rajat Upadhyaya / Novell,
        Christian Cier-Zniewski,
        Wilco Baan Hofman,
        Clement Chauplannaz.


       ftp(1),   pure-ftpd(8)   pure-ftpwho(8)   pure-mrtginfo(8)   pure-uploadscript(8)    pure-
       statsdecode(8) pure-pw(8) pure-quotacheck(8) pure-authd(8) pure-certd(8)

       RFC 959, RFC 2228, RFC 2389, RFC 2428 and RFC 4217.