VPN隧道消息序列的建立和关闭

VPN tunnel message sequence establishment and teardown

Virtual Private Network(VPN)是近年来网络研究的一个热点,其中隧道是VPN的核心技术,建立好了隧道就建立好了VPN,隧道消息序列是VPN的信息传送方式,从客户端请求到服务器端的接收,建立消息序列的传送连接,消息传送完毕后,关闭消息序列,消息序列的关闭和开启过程复杂,掌握好这一过程,通晓各个步骤的含意,能够使VPN更快捷地在工程中得以应用。

Virtual private network （VPN） is discussed favorably as a new technology extending from Intemet. Tunnel establishment is kernel technology of VPN. Tunnel message sequence is the main method of sending message in VPN. Client sends a request to server, Server checks it and establish a link to client. Teardown message sequence when all message is sent. How to establish and teardown message sequence is a complicated work, and predominating them can make VPN implement promptly.