OWASP Coraza WAF is a golang modsecurity compatible firewall library
Antivirus eCAP adapter for Squid 3.1 and above.
A java PCAP and DPI library
Blocking and monitoring of network traffic based on geography.
One of the most advanced DNS Proxy and DNS Firewall in one product.
OWASP ModSecurity Core Rule Set (CRS) Project
LumoGate is a Windows Wifi Hotspot Management Software
PeerGuardian - a privacy oriented firewall application