ufw - Ufw stands for Uncomplicated Firewall, and is program for managing a netfilter firewall.
Firewall Builder - Firewall Builder is Open Source multi-platform firewall management software that supports Linux...
ferm - ferm is a tool to maintain complex firewalls, without having the trouble to rewrite the complex...
Shorewall - The Shoreline Firewall, more commonly known as “Shorewall”, is high-level tool for configuring...
Emsisoft Online Armor Firewall - Emsisoft Online Armor Firewall is a freemium online firewall protection system by the Emsisoft that is based on the own independent protection technology of the Emsisoft.
TinyWall - Lightweight and non-intrusive firewall