An Embedded Router for Internet Communication Among Private Networks

An IP sharing router is frequently used to connect a private network to a public domain, to compensate the deficiency of IP addresses, to distribute the loads of server, and to implement a firewall. But when both of the server and client are contained in different private networks respectively and their routers use a dynamic IP address, most of general routers do not adduce an answer. In this paper, we propose a solution to this problem and devise an embedded router by registering the IP address of server-side router to dynamic DNS, automatically retrieving it, and using port forwarding techniques. With this router, the client device simply assumes its destination as its gateway port of the client-side router. And all other processes for a client to reach its server that exists in another private network are automatically handled by the client-side and server-side routers.