Firewall Builder - Firewall Builder is Open Source multi-platform firewall management software that supports Linux...
ufw - Ufw stands for Uncomplicated Firewall, and is program for managing a netfilter firewall.
Shorewall - The Shoreline Firewall, more commonly known as “Shorewall”, is high-level tool for configuring...
ferm - ferm is a tool to maintain complex firewalls, without having the trouble to rewrite the complex...
pfSense - pfSense is a free and open source firewall and router that also features unified threat management, load balancing, multi WAN, and more
TinyWall - Lightweight and non-intrusive firewall