It should also be noted the connection type used is '''Tunnel''' and not '''Transport'''. The tunnel protects the internal routing information by encrypting the IP header of the original packet. The original packet is encapsulated by another set of IP headers. | It should also be noted the connection type used is '''Tunnel''' and not '''Transport'''. The tunnel protects the internal routing information by encrypting the IP header of the original packet. The original packet is encapsulated by another set of IP headers. |