APPLICATION-ORIENTED NAME REGISTRATION SYSTEM AND SERVICE METHOD IN MULTI-LAYER NAT ENVIRONMENT

摘要

An application-oriented name registration system in multi-layer NAT environment is disclosed, including system terminal device and registration service unit which comprises top-layer registration service unit connected to public network and basic registration service unit connected to private network; the registration service unit is used to receive login request message from the system terminal device and record the user login information of the system terminal device, and the user login information includes at least the user identification, the user login point of the system terminal device used by the user in the network to which the registration service unit is connected, and the system terminal device access point of the system terminal device used by the user in the network to which the registration service unit is connected. The invention can locate the position through the identification in the multi-layer NAT network environment, and make the service in the private network visible to the external network and irrelevant to specific applications. A system and a method that provide more proper access route for the external network nodes are also disclosed.