OWASP Coraza WAF is a golang modsecurity compatible firewall library
Firewall log analyzer
Next Generation Open Source Firewall
Anti Spam SMTP Gateway
Powerfull Web Application Firewall for PHP
Open source voucher management / hotspot system
Jateway is a general purpose TCP/IP connection proxy
A MAC address based user authentication system for campus-wide network
Easy to use firewall for linux beginners.
Solução de proxy
Lomalarga is a VPN-like service based on SSH and Linux.