concurent users ssh conection's

[yon2004]

is there a way with the ssh server in debian to limit each user to only one concurent login each.
thanks in advance Yon

[Zelmo]

From this article, it looks like it can be done through PAM by editing the /etc/security/limits.conf file. Be sure to test it first; the man page isn't very specific about whether that limits concurrent logins or total logins (i.e., you can only log in so many times, after which you can never log in again), and some discussions that turned up on Google had disagreements about exactly what was meant. If you find that it does what you want, be sure to post back here so we can all learn the truth.