wipfw - IPv4 packet filter and traffic shaper for Windows based on IPFW (FreeBSD firewall).
A windows c++ program to test various libraries on various routers to forward ports on routers.
Server/client suite which provides per-user access control/firewall/QOS. Robust and high speed implementation is secure against MAC/IP spoofing, and can scale to large networks with many clients. Options for additional monitoring and captive portal.
Internet Control Firewall Intrusion Detection and Logger for Inbound and Outbound Traffic. Watches Files and Directories, Drive and Memory Protection.