Quoting Benjamin White <[EMAIL PROTECTED]>:

> How can a user be restricted to only one login at a time?
>

How's this look?

May 18 15:45:17 sosaatm sshd[1101]: Accepted publickey for sysadmin from
::ffff:10.11.2.55 port 1543 ssh2
May 18 15:45:33 sosaatm sshd[1123]: Accepted publickey for sysadmin from
::ffff:10.11.2.55 port 1544 ssh2
May 18 15:45:33 sosaatm pam_limits[1125]: Too many logins (max 1) for sysadmin
May 18 15:45:33 sosaatm login[1125]: Permission denied

This is on SLES9.  What I had to do to set it up is verify that...

session  required       pam_limits.so

..was in /etc/pam.d/sshd.

Then I changed /etc/security/limits.conf to include:

sysadmin         hard    maxlogins       1

And finally I changed /etc/ssh/sshd_config to include:

UseLogin yes

Leland

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