Ti Ip Sec Modes

This 6-page document provides a synopsis of IPSec encapsulation of secured IP packets according to the IPSec AH or ESP protocol and transport or tunnel mode. Transport mode protects only the payload, while tunnel mode protects the entire packet. The document illustrates how packets are structured under each combination of protocol and mode, including whether fields are authenticated, encrypted, or mutable. It provides visual diagrams of packet structures for IPSec transport mode with AH and ESP protocols.