Re: Want telnetd to execute different program than default (/bin/login)
From: Robert Heller (heller_at_deepsoft.com)
Date: 10/23/04
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Date: Sat, 23 Oct 2004 21:50:54 +0200
wb0gaz@hotmail.com (wb0gaz),
In a message on 23 Oct 2004 11:00:24 -0700, wrote :
w> I would like my fedora core 1 system to execute a program other than
w> /bin/login when accepting an incoming session.
w>
w> When I change the entry in /etc/xinetd.d/telnet to furnish the command
w> line parameter I believe is needed to execute a program other than
w> /bin/login (based on telnetd manpage), I get an error message in
w> /var/log/messages telling me that the parameter can only have one
w> entry.
w>
w> Current entry in /etc/xinetd.d/telnet is as follows:
w>
w> server = /usr/sbin/in.telnetd
w>
w> When I tried changing it to
w>
w> server = /usr/sbin/in.telnetd -L /someotherprogram
server = /usr/sbin/in.telnetd
server_args = -L /someotherprogram
I don't something else with my /etc/xinetd.d/telnet:
sauron.deepsoft.com% less -X /etc/xinetd.d/telnet
# default: on
# description: The telnet server serves telnet sessions; it uses \
# unencrypted username/password pairs for authentication. \
# (On this machine, however, telnet has been coopted by ssh.)
service telnet
# have to call it telnet to get the port, or change /etc/services)
{
flags = REUSE
socket_type = stream
wait = no
instances = 3 # prevent excessive multiple usage
user = root
# we use this as an emergency SSH entrance
# server = /usr/sbin/in.telnetd
server = /usr/sbin/sshd
server_args = -g 1200 -i -d -d -d
log_on_failure += HOST USERID
log_on_success += HOST USERID DURATION
disable = no
only_from = 192.168.10.{5,6,7}
}
This is an 'emergency' (SSH) entrance to my desktop from my laptop or
printserver via my LAN, should something bad happen to my video card
and/or keyboard (my video card was being flakey and did finally die --
I have since replaced it).
w>
w> I got this error message:
w>
w> xinetd[15352]: attribute server expects 1 values and 3 values were
w> specified [file=/etc/xinetd.d/telnet] [line=10]
w>
w> I tried enclosing the server argument in quotes:
w>
w> server = "/usr/sbin/in.telnetd -L /someotherprogram"
w>
w> and that did not succeed.
w>
w> It appears that telnetd behavior cannot be controlled by a ".rc" file
w> or environment variables, only command line parameters.
w>
w> I would appreciate a pointer in the right direction.
w>
w> Tks,
w>
w> wb0gaz@hotmail.com
w>
\/
Robert Heller ||InterNet: heller@cs.umass.edu
http://vis-www.cs.umass.edu/~heller || heller@deepsoft.com
http://www.deepsoft.com /\FidoNet: 1:321/153
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