wipfw - IPv4 packet filter and traffic shaper for Windows based on IPFW (FreeBSD firewall).
WinFail2ban scans log files/event viewer and bans IP that makes too many password failures.
Robust and flexible VPN network tunnelling
OpenVPN is a robust and highly flexible tunneling application that uses all of the encryption, authentication, and certification features of the OpenSSL library to securely tunnel IP networks over a single TCP/UDP port. Discussion forums and project wiki can be found here: https://forums.openvpn.net/ http://community.openvpn.net/openvpn
TSIC is a comprehensive solution for secure Internet connection against all kinds of threats and harmful programs for Windows platforms and ReactOS. It's features include a built-in FIREWALL,IDS,Parental and privacy Control and also antivirus.
Tunnelizer is an application suite that allows you to tunnel TCP and UDP traffic through a firewall or proxy server. Communication between the tunnel ends can be either direct or through a SOCKS or HTTP proxy server, and can be optionally encrypted.
Windows XP Firewall Web Frontend is a Web-based frontend for the Windows XP or 2003 (SP2) Firewall Service. Multi Language, easy to install and skinnable.
This is an Internet resource management system that can be used to control both internet and network access of a registered or unregistered user on all kinds of network.