This category focuses on defending your Linux servers with Fail2ban so bots and brute force attacks do not eat your CPU. I explain how Fail2ban works, how to write custom filters and jails for SSH, Nginx, WordPress, and APIs, and how to tune ban times so you hit the sweet spot between security and convenience. Every article is based on real logs from production servers, so you will quickly recognize patterns like credential stuffing, XMLRPC abuse, and weird 404 scans.

You will also learn how to integrate Fail2ban with nftables so banned hosts are blocked quickly at the firewall level. I show safe ways to test your configuration, how to view current bans, and how to avoid locking yourself out when you are experimenting. If you manage your own VPS or EC2 instances and want a clear, step by step path to a hardened setup, the Fail2ban tutorials in this section will guide you through it.