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NetBSD 6.1.5 - man page for fingerd (netbsd section 8)

FINGERD(8)			   BSD System Manager's Manual			       FINGERD(8)

NAME
     fingerd -- remote user information server

SYNOPSIS
     fingerd [-8ghlmpSsu] [-P filename]

DESCRIPTION
     fingerd is a simple protocol based on RFC 1288 that provides an interface to the Name and
     Finger programs at several network sites.	The program is supposed to return a friendly,
     human-oriented status report on either the system at the moment or a particular person in
     depth.  There is no required format and the protocol consists mostly of specifying a single
     ``command line''.

     fingerd is started by inetd(8), which listens for TCP requests at port 79.  Once handed a
     connection, fingerd reads a single command line terminated by a <CRLF> which it then passes
     to finger(1).  fingerd closes its connections as soon as the output is finished.

     If the line is null (i.e., just a <CRLF> is sent) then finger(1) returns a ``default''
     report that lists all people logged into the system at that moment.

     If a user name is specified (e.g., eric<CRLF>) then the response lists more extended infor-
     mation for only that particular user, whether logged in or not.  Allowable ``names'' in the
     command line include both ``login names'' and ``user names''.  If a name is ambiguous, all
     possible derivations are returned.

     The following options may be passed to fingerd as server program arguments in
     /etc/inetd.conf:

     -8 	   Enable 8-bit output.

     -g 	   Do not show any gecos information besides the users' real names.

     -h 	   Display the name of the remote host in short mode, instead of the office loca-
		   tion and office phone.

     -l 	   Enable logging.  The name of the host originating the query, and the actual
		   request is reported via syslog(3) at LOG_NOTICE priority.  A request of the
		   form '/W' or '/w' will return long output.  Empty requests will return all
		   currently logged in users.  All other requests look for specific users.  See
		   RFC 1288 for details.

     -m 	   Prevent matching of user names.  User is usually a login name; however, match-
		   ing will also be done on the users' real names, unless the -m option is sup-
		   plied.

     -P filename   Use an alternate program as the local information provider.	The default local
		   program executed by fingerd is finger(1).  By specifying a customized local
		   server, this option allows a system manager to have more control over what
		   information is provided to remote sites.

     -p 	   Prevents finger(1) from displaying the contents of the ``.plan'' and
		   ``.project'' files.

     -S 	   Prints user information in short mode, one line per user.  This overrides the
		   ``Whois switch'' that may be passed in from the remote client.

     -s 	   Disable forwarding of queries to other remote hosts.

     -u 	   Queries without a user name are rejected.

SEE ALSO
     finger(1), inetd(8)

HISTORY
     The fingerd command appeared in 4.3BSD.

BUGS
     Connecting directly to the server from a TIP or an equally narrow-minded TELNET-protocol
     user program can result in meaningless attempts at option negotiation being sent to the
     server, which will foul up the command line interpretation.  fingerd should be taught to
     filter out IAC's and perhaps even respond negatively (IAC WON'T) to all option commands
     received.

BSD					September 12, 2002				      BSD


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