System and method for realizing TCP reverse port mapping

The invention relates to a system and a method for realizing TCP reverse port mapping. An objective is to provide a system and a method for realizing TCP reverse port mapping. The system and the method are compatible to various TCP service protocols in a comprehensive manner. The scheme is that the system for realizing TCP reverse port mapping comprises a server module, a device-end agent module and a client-end agent module connected with the server module through the internet. The server module respectively communicates with the device-end agent module and the client-end agent module, and assists to establish an UDP channel between the client-end agent module and the device-end agent module. The client-end agent module opens at least a TCP monitoring port in local, and through the established UDP channel, initiates a reverse port mapping request to the device-end agent module, and mapping target IP addresses and TCP ports which need connection in a one-to-one correspondence manner to local TCP monitoring ports of the client-end agent module. The system and the method are used in the technical field of computer network communication.