The Next Generation TCP/IP stack in Windows Vista and Windows Server "Longhorn" is a complete redesign of TCP/IP functionality for both Internet Protocol version 4 (IPv4) and Internet Protocol version 6 (IPv6) that meets the connectivity and performance needs of today's varied networking environments and technologies.
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• Improved resistance against all known TCP/IP-based denial of service and other types of network attacks.
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http://www.microsoft.com/techn...y/columns/cableguy/cg0905.mspx
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