OWASP Coraza WAF is a golang modsecurity compatible firewall library
OpenBSD based firewall distribution
A firewall for humans.
A simple, portable port scanner
This Tool blocks a Mass of IP's via the Windows Firewall - IP Blocker
OPNsense is an open source, easy to use firewall and routing platform
A powerful network security tool, easy, safe and totally free.
Provisions Simple Secure Network Firewall/Router
Powerfull Web Application Firewall for PHP
shell program to automatically configure freebsd as a firewall
360-FAAR Analyze FW1 Cisco Netscreen Policy Offline Using Config/Logs
A client for the MikroTik RouterOS API protocol, written in PHP.
Open source voucher management / hotspot system
Linux firewall distribution geared towards home and SOHO users.
High interaction honeypot solution for Linux based systems
Firewall Management Script
A MAC address based user authentication system for campus-wide network
flex-fw is a small and fast console frontend to iptables
KnockIt! is a port Knocking tool for MAC OSX
Nginx and Lua Based Easy to setup Web Application Firewall