Linux

With authbind, you can bind privileged ports with regular user privileges.

Explains advanced SSH techniques such as multi-hop SSH, port forwarding, and port knocking.

Wrote a systemd service to automatically shut down a machine if no one logs in within a certain time after boot.

When using ‘yum install’ and specifying a non-existent package name, it returns exit code 0. This article explains how to change this behavior.