I. Detail that the purpose of this mode is to encrypt all traffic that will traverse an unsecured network, and the receiving server decrypts the packet to be able to send the final address.
II. Stress that the benefit of this model is that the intercepted packet never reveals anything about its true destination system.
III. In tunnel mode, the entire client packet is encrypted and added as the data portion of a packet that is addressed from one tunneling server and to another. The receiving server decrypts the packet and sends it to the final address.