Hi,
I needed some clarification on IPSEC functionality. This is what i Know about IPSEC.
IPSEC has two protocols
1) Authentication Header (AH)
2) Encryption security payload (ESP)
Now, in AH we only Authenticate the packet using the Hask key mechanism.
In Tunnel mode, the data is encrypted as well as authenticated and becomes a payload of a new IP packet.
IPSEC also has 2 modes of operation - Transport and Tunnel Mode.
NOw please explain me how the IP packet is encrypted or authenticated in these Transport or Tunnel modes. I mean can someone show me how the IP Packet will look like with these mechanisms(AH and ESP) and modes.
Regards
Navneet
