Block all user telnet access to System, except super-user

[psyche0417]

Hi,

Is there anyway I can block all users, except for the super-user, telnet access to our UNIX system, without using firewall? We only want to block telnet access, i,e. they still have to be able to log in from the workstations on the internal network. Oh by the way, our UNIX network resides inside the corporate NT network, which already has a firewall. So can we use the NT firewall for this purpose?

Thanks!

psyche0417

 

[Annihilannic]

You could try putting something like this in /etc/profile after the export LOGNAME PATH line:

[tt]if [ "$LOGNAME" != root ]
then
PPID=`ps -o ppid -p $$ | grep -v PPID`
if [ "`ps -o comm -p $PPID | grep -v COMM`" = in.telnetd ]
then
echo telnet access disabled for non-root users.
sleep 3
exit
fi
fi[/tt] Annihilannic.