How to Install and Configure Fail2ban on Ubuntu 22.04

Fail2ban is free and open-source IPS (Intrusion Prevention Software) that helps administrators secure Linux servers against malicious login and brute-force attacks. In this tutorial, we will show you how to install and configure Fail2ban for securing the Ubuntu 22.04 server. This guide also covers the basic command of fail2ban-client for managing Fail2ban service and jails.

Source: Howtoforge Linux Howtos und Tutorials