OWASP Coraza WAF is a golang modsecurity compatible firewall library
Free UTM appliance: firewall, VPN, WAF and antivirus in one ISO.
Next Generation Open Source Firewall
Anti Spam SMTP Gateway
Firewall log analyzer
Prevent and Protect Your HTML5 Video, Music , Audio From Download Free
IOSec Addons are enhancements for web security and crawler detection
Detect Flooder IPs, Reduce Attack Surface against HTTP Flood Attacks