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Old 02-05-2004, 03:15 PM   #1
hawk2xl
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Registered: Feb 2004
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Preventing multiple logins (of same userid) on RH73


Hi, does anyone know of a way to prevent users from loging into a RH73 server multiple times from different (windoze) workstations? This box is configured as a PDC through samba.
 
Old 02-11-2004, 05:45 AM   #2
iainr
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Hi hawk2xl,

If users are logging in on the command line (e.g. with ssh or telnet), an easy (though not too elegant) method would be to put a script in the profile (e.g. .bash_profile or, better, /etc/profile) that checked to see if the user was already logged on and, if so, terminated the session.

Unfortunately, I don't have access to a Linux box right now, but it should be something like :

Code:
if [ $(who | grep ^$(whoami) | wc -l) -gt 1 ]
   then
      echo "User $(whoami) is already logged on...logging off now"
      exit
fi
(The above works with AIX and korn shell, which is what I can log onto right now. You might also want to check out the trap command).

Last edited by iainr; 02-11-2004 at 05:46 AM.
 
Old 03-23-2004, 10:45 AM   #3
hawk2xl
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Sorry if I did not explain clearly. The users are not logging in on the command line (e.g. with ssh or telnet). The server is configured as a replacement for a Windoze NT4 Primary Domain Controller. Users are logging into the domain through this server.

I would like to prevent users from loging in (clients ranging from Win9x to 2k to xp) more than once with same account, while not restricting them to a fixed pc.

I know that some of my users are sharing their userid and passwords. For what reason, I do not know.
 
  


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