One of the weaknesses of the original Internet Protocol is that it lacks any sort of general purpose mechanism for ensuring the authenticity and privacy of data as it is passed over the internetwork.
Since IP datagrams must usually be routed between two devices over unknown networks, any information in them is subject to being intercepted and even possibly changed.
With the increased use of the Internet for critical applications, security...
preview:
http://www.tcpipguide.com/free/t_IPSecurityIPSecProtocols.htm
10/9/2008
