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---- __NAME__ in.fingerd - remote user information server __SYNOPSIS__ in.fingerd [[-wulf] [[-pL path] [[-t timeout] __DESCRIPTION__ Fingerd is a simple daemon based on ''RFC1196'' that provides an interface to the ``finger'' program at most network sites. The program is supposed to return a friendly, human-oriented status report on either the system at the moment or a par- ticular person in depth. If the -w option is given, remote users will get an addi- tional ``Welcome to ...'' banner which also shows some informations (e.g. uptime, operating system name and release) about the system the in.fingerd is running on. Some sites may consider this a security risk as it gives out information that may be useful to crackers. If the -u option is given, requests of the form ``finger @host'' are rejected. If the -l option is given, information about requests made is logged. This option probably violates users' privacy and should not be used on multiuser boxes. If the -f option is given, finger forwarding (user@host1@host2) is allowed. Useful behind firewalls, but probably not wise for security and resource reasons. The -p option allows specification of an alternate location for in.fingerd to find the ``finger'' program. The -L option is equivalent. The -t option specifies the time to wait for a request before closing the connection. A value of 0 waits forever. The default is 60 seconds. Options to in.fingerd should be specified in /etc/inetd.conf. The finger protocol consists mostly of specifying command arguments. The inetd(8) ``super-server'' runs in.fingerd for TCP requests received on port 79. Once connected in.fingerd reads a single command line terminated by a CRLF which is passed to finger(1). It closes its connec- tions as soon as all output is finished. If the line is empty (i.e. just a CRLF is sent) then finger returns a ``default'' report that lists all people logged into the system at that moment. This feature is blocked by the -u option. If a user name is specified (e.g. eric CRLF ) then the response lists more extended information for only that par- ticular 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. __SEE ALSO__ finger(1), inetd(8) __RESTRICTIONS__ 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. __HISTORY__ The finger daemon appeared in 4.3 BSD . Linux !NetKit (0.17) August 29, 1996 1 ----
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