Psylinux's Blog

You can configure any Linux system to automatically log users out after a period of inactivity. Simply login as the root user and create a file called /etc/profile.d/autologout.sh , enter: # vi /etc/profile.d/autologout.sh Append the following code: TMOUT=300 readonly TMOUT export TMOUT Save and close the file. Set permissions: # chmod +x /etc/profile.d/autologout.sh Above script will implement a 5 minute idle time-out for the default /bin/bash shell. You can also create tcsh version as follows: # vi /etc/profile.d/autologout.csh Append the following code: set -r autologout 5 Save and close the file. Set permissions, enter: # chmod +x /etc/profile.d/autologout.csh Dealing with ssh clients SSH allows administrators to set an idle timeout interval. After this interval has passed, the idle user will be automatically logged out. Open /etc/ssh/sshd config file, enter: # vi /etc/ssh/sshd config Find ClientAliveInterval and set to 300 (5 minutes) as follows:

“Using GnuPG for SSH authentication” may refer to two distinct things: making the GnuPG agent (which is normally used to cache the passphrase of your OpenPGP key) to also act as a SSH agent, to cache the passphrase of your SSH key; using a key pair of your OpenPGP keyring as a SSH key pair. In this note, I will explain how to do this in GnuPG 2.1 (“modern”).