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Internet Protocol Security (IPSec)

Updated: January 21, 2005

Applies To: Windows Server 2003, Windows Server 2003 R2, Windows Server 2003 with SP1, Windows Server 2003 with SP2

Internet Protocol security (IPSec)

Internet Protocol security (IPSec) is a framework of open standards for ensuring private, secure communications over Internet Protocol (IP) networks, through the use of cryptographic security services.


  • Portions of IPSec-related services were jointly developed by Microsoft® and Cisco Systems, Inc.

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