StealthNetWall is a Windows 2000 personal firewall for users to use when connected to the Internet. The StealthNetWall firewall will protect your computer and place your computer in stealth mode when connected to the Internet via an Ethernet card. Specifically, StealthNetWall will protect your computer from the following: malformed IP packets, IP packets that contain options, Pings, and Traceroutes; and it will also prevent any ICMP redirect requests to your computer.
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hxxp://www.stealthnet.com/newmain.html