Dynamic proxy distribution method and system for mobile VPN

[[abstract]]The invention relates to arrangement method of dynamic proxy of mobile VPN and its system, which can build the virtual private network between at least one external network and one internal network and can reach the safe roam of at least one mobile node in said external network. The invention uses the external local proxy which can be dynamically arranged near the mobile node in said roaming external network as the register proxy of said mobile node, to make the mobile node only need to register at said external local proxy when it is roaming in the same external network, without the registering at the internal local proxy of said internal network-the Internet Engineering Task Force method. So the handoff delay and the end to end delay between proxies when in roam can be reduced most while the invention can fully combine the VPN of internet communication security protocol safe control.[[fileno]]2030228060010[[department]]資工