OpenSnitch is a GNU/Linux port of the Little Snitch firewall
Simple tool to configure Windows Filtering Platform (WFP)
A firewall for humans.
LuLu is the free open-source macOS firewall
Share a VPN connection with VMs or containers
An iptables IPv4 firewall and traffic shaping program
One of the most advanced DNS Proxy and DNS Firewall in one product.
OWASP ModSecurity Core Rule Set (CRS) Project
Create and delete block rules for the Windows firewall
360-FAAR Analyze FW1 Cisco Netscreen Policy Offline Using Config/Logs
High-performance WAF built on the OpenResty stack
Network Firewall Linux Kernel Module with Conflict Resolution Engine
Extract and Convert Juniper Firewall Policies to CSV
A MAC address based user authentication system for campus-wide network
flex-fw is a small and fast console frontend to iptables
Nginx and Lua Based Easy to setup Web Application Firewall
A simple captive portal