Patent ID: 7512687
Filing Date: 2009-03-31
Classification: H04L,H04W

Abstract:
1. A system for providing a VPN (Virtual Private Network) service by connecting a VPN to a mobile communication network, comprising: a home agent (HA) in which location information of a mobile node (MN) and information about the VPN service for the MN are stored when the HA receives from the MN, a location registration request message for the VPN service; a foreign agent (FA) for receiving location registration information from the MN, transmitting a location registration request message to the HA, receiving information about the VPN service from the HA and transmitting data to an ISP (Internet Service Provider) router in a same network as that of the FA, when receiving a VPN service request; an ISP server positioned between the ISP router of the FA network and an ISP router of the VPN, for managing information on the ISP routers and establishing IP tunneling between the ISP routers; a router network for routing between the FA network and the VPN and for receiving and transmitting the data using an IP tunnel to a correspondence node; and a VPN server connected to the ISP router of the VPN, for providing the VPN service.