TCP/IP is an inherently insecure protocol. However, the Windows 2000 implementation allows you to configure its operation to counter network denial of service attacks. Some of the keys and values referred to in this How To may not exist by default. In those cases, create the key, value, and value data.
For more details about the TCP/IP network settings that the registry for Windows 2000 controls, see the white paper "Microsoft Windows 2000 TCP/IP Implementation Details," at http://www.microsoft.com/technet/treeview/default.asp?url=/technet/itsolutions/network/deploy/depovg/tcpip2k.asp .