Planet Networking & Communication MH-1000 User Manual page 97

addresses of the hosts must be public IP addresses.
IP AH/E
Transport Mode
- This mode is used to provide data security between two networks. It provides protection for the entire IP
packet and is sent by adding an outer IP header corresponding to the two tunnel end-points. Since tunnel
mode hides the original IP header, it provides security of the networks with private IP address space.
IP AH/E
A.2.3 Tunnel Mode AH
AH is typically applied to a data packet in the following manner:
Original Packet
Packet with IPSec Authentication Header
New IP Header
A.2.4 Tunnel Mode ESP
IP TC Dat
TC Dat
IP Header TCP
AH
Multi-Homing Security Gateway User's Manual
Data
TCP
Org IP Header
Authenticated
- 93 -
Data