OPNsense is an open source, easy to use firewall and routing platform
ipset set listing wrapper script
A powerful network security tool, easy, safe and totally free.
Provisions Simple Secure Network Firewall/Router
Powerfull Web Application Firewall for PHP
Prevent and Protect Your HTML5 Video, Music , Audio From Download Free
Programmable completion code (bash) for ip[6]tables (netfilter.org)
shell program to automatically configure freebsd as a firewall
PeerGuardian - a privacy oriented firewall application
upnp port opener
360-FAAR Analyze FW1 Cisco Netscreen Policy Offline Using Config/Logs
High-performance WAF built on the OpenResty stack
Simulating an IP packet traversing the Linux kernel.
Network Firewall Linux Kernel Module with Conflict Resolution Engine
A client for the MikroTik RouterOS API protocol, written in PHP.