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What Is IPSec?: Security Policy; Security Services April 25, 2012

Posted by John Ruby in Microsoft KBs, Troubleshooting & Knowledge Bases.
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Internet Protocol security (IPSec) is a framework of open standards for helping to ensure private, secure communications over Internet Protocol (IP) networks through the use of cryptographic security services. IPSec supports network-level data integrity, data confidentiality, data origin authentication, and replay protection. Because IPSec is integrated at the Internet layer (layer 3), it provides security for almost all protocols in the TCP/IP suite, and because IPSec is applied transparently to applications, there is no need to configure separate security for each application that uses TCP/IP.

IPSec helps provide defense-in-depth against:

  • Network-based attacks from untrusted computers, attacks that can result in the denial-of-service of applications, services, or the network
  • Data corruption
  • Data theft
  • User-credential theft
  • Administrative control of servers, other computers, and the network.

What Is IPSec?: Security Policy; Security Services

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