【摘要】 虚拟专用网VPN提供了一种通过公用网络安全地对企业内部专用网络进行远程访问的连接方式 .分析了VPN技术的原理 ,论述了VPN技术涉及到的网络协议及实现方法 .将VPN技术应用于基于公用网络构架的校园网上的选课功能中 ,采用IpSec及IKE协议 ,在网络层上封装数据 ,实现了端到端的确保基于IP通信数据安全性的机制 ,从而实现了学生网上选课的功能 .更多还原

【Abstract】 VPN is a technology which realizes the save translation of private information through the public network. This article analyzes the theory of VPN technology and introduces the involved network protocols and the realization methods. VPN is applied to the function of course selection which is carried out in campus network and based on public network framework. VPN uses the protocol of IpSec and IKE, encapsulates data on network layer,thus realizing mechanism of port to port, which ensures the security based on ip communication, thereby, realizes the function of course selection.更多还原