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

     fingerd --	remote user information	server

     fingerd [-s] [-l] [-p filename]

     Fingerd is	a simple protocol based	on RFC1196 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	re-
     quired 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 connected it reads a single command line	terminated by a	<CRLF>
     which is passed 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 returns a
     "default" report that lists all people logged into	the system at that mo-

     If	a user name is specified (e.g. eric<CRLF>) then	the response lists
     more extended information 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 deriva-
     tions are returned.

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

     -s	     Enable secure mode.  Queries without a user name are rejected and
	     forwarding	of queries to other remote hosts is denied.

     -l	     Enable logging.  The name of the host originating the query is
	     reported via syslog(3) at LOG_NOTICE priority.

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

     finger(1),	inetd(8)

     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.

     The fingerd command appeared in 4.3BSD.

BSD				 June 4, 1993				   BSD


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