mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-23 11:18:54 +00:00
140 lines
4.2 KiB
Groff
140 lines
4.2 KiB
Groff
.\" Copyright (c) 1980, 1991, 1993
|
|
.\" The Regents of the University of California. All rights reserved.
|
|
.\"
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
.\" modification, are permitted provided that the following conditions
|
|
.\" are met:
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer.
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
.\" 3. All advertising materials mentioning features or use of this software
|
|
.\" must display the following acknowledgement:
|
|
.\" This product includes software developed by the University of
|
|
.\" California, Berkeley and its contributors.
|
|
.\" 4. Neither the name of the University nor the names of its contributors
|
|
.\" may be used to endorse or promote products derived from this software
|
|
.\" without specific prior written permission.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
.\" SUCH DAMAGE.
|
|
.\"
|
|
.\" @(#)fingerd.8 8.1 (Berkeley) 6/4/93
|
|
.\"
|
|
.Dd June 4, 1993
|
|
.Dt FINGERD 8
|
|
.Os BSD 4.3
|
|
.Sh NAME
|
|
.Nm fingerd
|
|
.Nd remote user information server
|
|
.Sh SYNOPSIS
|
|
.Nm fingerd
|
|
.Op Fl s
|
|
.Op Fl l
|
|
.Op Fl p Ar filename
|
|
.Sh DESCRIPTION
|
|
.Nm Fingerd
|
|
is a simple protocol based on
|
|
.%T 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 required format and the
|
|
protocol consists mostly of specifying a single
|
|
.Dq command line .
|
|
.Pp
|
|
.Nm Fingerd
|
|
listens for
|
|
.Tn TCP
|
|
requests at port 79.
|
|
Once connected it reads a single command line
|
|
terminated by a
|
|
.Aq Tn CRLF
|
|
which is passed to
|
|
.Xr finger 1 .
|
|
.Nm Fingerd
|
|
closes its connections as soon as the output is finished.
|
|
.Pp
|
|
If the line is null (i.e. just a
|
|
.Aq Tn CRLF
|
|
is sent) then
|
|
.Xr finger
|
|
returns a
|
|
.Dq default
|
|
report that lists all people logged into
|
|
the system at that moment.
|
|
.Pp
|
|
If a user name is specified (e.g.
|
|
.Pf eric Aq Tn CRLF )
|
|
then the
|
|
response lists more extended information for only that particular user,
|
|
whether logged in or not.
|
|
Allowable
|
|
.Dq names
|
|
in the command line include both
|
|
.Dq login names
|
|
and
|
|
.Dq user names .
|
|
If a name is ambiguous, all possible derivations are returned.
|
|
.Pp
|
|
The following options may be passed to
|
|
.Nm fingerd
|
|
as server program arguments in
|
|
.Pa /etc/inetd.conf :
|
|
.Bl -tag -width Ds
|
|
.It Fl s
|
|
Enable secure mode.
|
|
Queries without a user name are rejected and
|
|
forwarding of queries to other remote hosts is denied.
|
|
.It Fl l
|
|
Enable logging.
|
|
The name of the host originating the query is reported via
|
|
.Xr syslog 3
|
|
at LOG_NOTICE priority.
|
|
.It Fl p
|
|
Use an alternate program as the local information provider.
|
|
The default local program
|
|
executed by
|
|
.Nm fingerd
|
|
is
|
|
.Xr 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.
|
|
.El
|
|
.Sh SEE ALSO
|
|
.Xr finger 1
|
|
.Sh BUGS
|
|
Connecting directly to the server from a
|
|
.Tn TIP
|
|
or an equally narrow-minded
|
|
.Tn TELNET Ns \-protocol
|
|
user program can result
|
|
in meaningless attempts at option negotiation being sent to the
|
|
server, which will foul up the command line interpretation.
|
|
.Nm Fingerd
|
|
should be taught to filter out
|
|
.Tn IAC Ns \'s
|
|
and perhaps even respond
|
|
negatively
|
|
.Pq Tn IAC WON'T
|
|
to all option commands received.
|
|
.Sh HISTORY
|
|
The
|
|
.Nm
|
|
command appeared in
|
|
.Bx 4.3 .
|