Design And Research Of The Virtual Private Network

The paper research key point uses the VPN special realization security data communication.With the increasing of data exchange capacity inner/inter companies, it's in urgent demand that the safety in data transmission for enterprises. It's focused on the research of data communication in network safety engineering in this paper.It's presented the intensive study on VPN and its implement program, which is a widely used information safety technique right now. Based on the current situation, classification and strategy of safety problem, it's proposed that the basic solution for data communication. It's discussed in detail that the definition, usage, classification basis of protocol, typical characters of VPN, encryption system, modular structure graph and the method to set up a VPN for safety data communication.The main content of this paper includes:Research on VPN, which includes definition, function and characteristics of VPN, different classification for VPN and their application, comparison of some protocols for VPN implementation, detail process of establishing VPN protocols, such as PPTP, L2TP, GRE, etc, PPP protocol and its specific application.VPN design and its analysis which includes a detailed VPN module graph, several simulation, an elaborated design on safety communication under VPN technique. The synthesis nowadays business, institution's network present situation, the detailed elaboration carries on the safe correspondence design proposal with the VPN technology, had each kind of situation to the network constitution in to be supposed to conduct the dissect to the measure and to carry on the theoretical analysis.