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FINGERD.DOC
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1994-10-16
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NAME
in.fingerd - remote user information server
SYNOPSIS
in.fingerd file
DESCRIPTION
Fingerd is a simple protocol based on RFC742 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 when it receives a TCP connection request
at port 79. Once connected it reads a single command line terminated by
a <CRLF> which is passed to finger. 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, file given as its argument.
If a user name is specified (e.g. eric<CRLF>) then the response lists
more extended information for that particular user, whether logged in or
not. Allowable `names' in the command line include both `login names'
and `user names'.
SEE ALSO
finger
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.
Fingerd requires the APipe handler installed and mounted in the system
for correct operation.
HISTORY
The fingerd command appeared in 4.3BSD.