Networking
-
Linux Iptables quick reference
iptables in 5 Minutes: a quick cheat-sheet for quick rule edits, safe testing, and making changes stick, without tripping over firewalld, UFW, or nftables.
-
SSH Tunneling and Port-Forwarding guide
A brief SSH tunneling & proxy methods guide - Dynamic, Remote & Local port-forwarding. Tunneling and Hardening resources.