In this video, I cover the installation, some SSH daemon jail configuration, but I also show you how to write your own expression to match malicious HTTP requests, and then ban the corresponding host IP address.

Written version: https://charlesbeadle.tech/posts/fail2ban

Fail2Ban wiki: https://github.com/fail2ban/fail2ban/wiki

Filter security: https://fail2ban.readthedocs.io/en/latest/filters.html#filter-security