Danilo Dy Wed, 12/19/2007 - 09:49
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Hi,


IPsec consists of two sub-protocols namely Encapsulated Security Payload (ESP) and Authentication Header (AH).


From point-A to point-B

Original Packet (Private IP) > Encapsulated Packet (Real/Public IP) > Encrypted Packet


IP Packet is encapsulated inside another IP Packet before encryption.


Here's a good document http://csrc.nist.gov/publications/nistpubs/800-77/sp800-77.pdf


Regards,

Dandy

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