INTER-NODE COMMUNICATION CONTROL METHOD, INTER-NODE COMMUNICATION METHOD, HOME AGENT, AND NODE COMPUTER

摘要

PROBLEM TO BE SOLVED: To achieve low cost and secure PtoP communication.;SOLUTION: The inter-node communication method includes a step, in which a first ISAKMP SA and first/second IPsec SAs are established between a first node and a Home Agent, corresponding to the protocol of a Mobile IP, and a second ISAKMP SA and third/fourth IPsec SAs are established between a second node and the HA corresponding to the protocol of the Mobile IP; an establishment step for establishing a third ISAKMP SA between the first/second nodes via the HA by using the second IPsec SA between the first node and the HA and the fourth IPsec SA between the second node and the HA; a step for performing path optimization processing on the communication between the first node and the second node via the HA, after the establishment step; a step for establishing a fifth IPsec SA between the first node and the second node by using the third ISAKMP SA; and a step for conducting secure communication by using care-of addresses of the first/second nodes between the first node and the second node by using the fifth IPsec SA.;COPYRIGHT: (C)2007,JPO&INPIT