METHOD FOR CONSTRUCTING CUG, METHOD FOR PREVENTING INFLOW OF CAMOUFLAGED PACKET INTO NETWORK AND NETWORK WITH CAMOUFLAGED PACKET INFLOW PREVENTIVE MECHANISM

摘要

PROBLEM TO BE SOLVED: To prevent a packet, transmitted from an unauthorised member, from arriving at an access protection object even if the source address has been forged.;SOLUTION: When a camouflaged packet using a source address within a camouflage preventive address range tries to enter a network 1 with camouflage preventive function, that packet is discarded at a forged packet inflow preventive section 11. Furthermore, in the network 1, only a user authenticated at an authentication address issuing section 12 can transmit a source address within a camouflage preventive address range. In this regard, correct use of a source address assigned to a user in authentication is recognized.;COPYRIGHT: (C)2003,JPO