Patent ID: 7000120
Filing Date: 2006-02-14
Classification: H04L

Abstract:
1. A method of permitting access to selected information normally included in a payload of a packet upon which encrypting security processing has been performed by a node in a packet switched network during transmission of the packet to another node, said method comprising: prior to performing encrypting security processing on a payload of a packet, storing information corresponding to selected information normally included in a payload of said packet in a field in a header of said packet where said field is not subject to said encrypting security processing, said selected information including transport level information, said transport level information being useable by at least one intermediate nodes between said node and said another node in the packet switched network to provide value added services relative to the transmission; performing said encrypting security processing on said payload of said packet; and transmitting said packet including said header and said payload upon which encrypting security processing has been performed in the packet switched network, thereby permitting access to said selected information normally included in said payload of said packet via said header of said packet by a node in the packet switched network.