一個不錯的視頻—Understanding IPSEC

一直不是太明白IPSec的工作模式,youTube上的一個視頻講解的很清楚

IPSec provides an automated solution for three areas:

. authentication

. integrity

. confidentiality

IPSec is application independent  這句話最重要

IPsec Tunnel Mode packet---Using IPsec with virtual priviate networking
(IP Header (IPSec Header (IP Header( TCP Header(Data)))))

參考 http://www.youtube.com/watch?v=DH1zI8QYi4A