There are 1 repository under linux-firewall topic.
OpenSnitch is a GNU/Linux application firewall
WireGuard Guide. Learn all about WireGuard for Networking and in the Cloud (Microsoft Azure, AWS, and Google Cloud).
List of opensource cheat sheets
Linux iptables automation tool. It manages the firewall on CERN 's DB Servers.
Using domain name on IPtables. Keep updated firewall rules from dynamic DNS (DDNS).
examples for nftables
Configuration compiler for ConfigServer Firewall & LFD