HTTP proxy to block ads and customize webpages
OWASP ModSecurity Core Rule Set (CRS) Project
360-FAAR Analyze FW1 Cisco Netscreen Policy Offline Using Config/Logs
High-performance WAF built on the OpenResty stack
IOSec Addons are enhancements for web security and crawler detection
Easy to use firewall for linux beginners.
IP block list - can manage many thousands of IP addresses