Patent ID: 6167513
Filing Date: 2000-12-26
Classification: H04L,H04W

Abstract:
A mobile computer for carrying out communications while moving within a communication system in which a plurality of networks are inter-connected, said plurality of networks including one network at which a packet processing device is provided, said packet processing device having a function for applying an encryption and authentication processing to a packet transmitted by a computer inside said one network toward another computer outside said one network, the mobile computer comprising:a first recognition unit for recognizing whether said mobile computer is located inside a home network or outside the home network, the home network being one of said plurality of networks at which a mobile computer management device is provided, the mobile computer management device having a function for managing a mobile location information of said mobile computer and transferring a packet destined to said mobile computer to a current location of said mobile computer;a second recognition unit for recognizing whether or not there exists a packet processing device which has a packet transmitted by at least one of said mobile computer and a correspondent computer of said mobile computer as an encryption and authentication processing target; anda communication unit for carrying out a prescribed communication processing including an encryption and authentication processing of a packet to be transmitted from said mobile computer, according to recognition results obtained by the first recognition unit and the second recognition unit.