A packet forwarding apparatus enabling selective provider type access service in a mobile communication network, including a first group of line interfaces connected to routers deployed to service areas of a mobile network, a second group of line interfaces connected to the Internet or to routers belonging to different ISP networks, an ISP management table indicating correspondence of domain name of each ISP networks to an authentication server address, and a controller that identifies, upon receiving from a mobile terminal a request to connect to one of said ISP networks, the domain name of the ISP network from a user ID in the request, transmits an authentication request including the user ID and password specified in said request to an authentication server associated with the ISP network, based on said ISP management table, and notifies the mobile terminal of a result of authentication by said authentication server.