Documentation & Guides
Wiki search
NAT and Port Forwarding — A Beginner's Guide to Router Networking
Understand SNAT, DNAT (Port Forwarding), Hairpin NAT loopback, avoiding CGNAT traps, and safely hosting services from a home or office network.
Fail2ban — Protect SSH and Web Services from Brute Force
Install, configure, and operate fail2ban to automatically block malicious IP addresses attempting brute-force logins.
UFW Basics — Default-Deny Firewall on Ubuntu & Debian
Step-by-step beginner guide to configuring Ubuntu's Uncomplicated Firewall (UFW), command breakdown, rules, port syntax, and avoiding SSH lockout.