CacheGuard Gateway is a UTM, a WAF, and a QoS management appliance.
OpenWrt Firewall CLI management tool
Anti Spam SMTP Gateway
Programmable completion code (bash) for ip[6]tables (netfilter.org)
Block or allow connections by country address blocks
Linux firewall distribution geared towards home and SOHO users.
High interaction honeypot solution for Linux based systems
Ferramenta Web para Administração de Firewall
A web interface for various penetration testing tools
Collection of security checks for Linux
Easy to use firewall for linux beginners.