METHOD FOR CONTROLLING INTERNET TELEPHONY USING VPN

摘要

A control method of an internet phone using private network preventing wiretapping is provided to packetize and compress voice and include a function of VPN(Virtual Private Network) through tunneling of virtual private network. A link is set up in both ends by exchanging the configuration packet. Before exchanging the protocol packet of the network layer, clients(120,130) perform an authentication to the PPP server(110) in order to receive its own authentication is performed. The network layer protocol supported from the NCP packet exchange is set up. By exchanging the termination packet, a PPP Link connection is terminated.