The method is composed of communication terminal, access server, and forwarding server. The communication terminal and the access server can be deployed inside private network, or deployed on public network. The forwarding server is deployed on public network. Each communication terminal possesses a unique decimal digit communication number. Based on communication number, intercommunication is carried out among communication terminals. Access server realizes addressing for communication. Forwarding server realizes addressing step by step. MAC address of communication terminal as id information is bound to communication number. In communication process, encryption is carried out for communication message based on id information of communication terminal and id information of communication message. Thus, private safety communication channel is built, and legal authentication is carried out for id of communication terminal and id of communication message. |