Mastering Linux Security and Hardening - Second Edition

Configuring automatic logout in sshd_config

The second method only logs out users who are logged in remotely via SSH. Instead of creating the /etc/profile.d/autologout.sh file, look for these two lines in the /etc/ssh/sshd_config file:

#ClientAliveInterval 0#ClientAliveCountMax 3

Change them to the following:

ClientAliveInterval 100ClientAliveCountMax 0

Then, restart the SSH service to make the change take effect.

I've been using 100 seconds for the timeout value in both of these examples. However, you can set the timeout value to suit your own needs.

You now know how to automatically log out your users. Now, let's look at setting up security banners.