浅析IPSec VPN的原理与应用

Analysis of the Theory and Application of IPSec VPN

随着Intemet的大规模使用，其安全（Security）问题越来越突出。IPSec是IETF以RFC形式公布的一组安全IP协议集，为Ip业务提供保护的安全协议标准。本文主要从IPSec的协议、模式、结构、工作原理以及提供的安全服务等方面系统阐述了其基本原理。最后，结合中国电信正在向现代综合信息服务提供商的战略转型的时代需要，从技术、需求、产业链和网络等四个层面分析了向市场提供IPSec VPN增值业务的必要性。

With the massive use of the lnternet,its security（Security）and more problems.IPSec is an IETF RFC to be published in a set of secure IP protocol suite,IP services to provide protection for the security protocol standards.This article from the IPSec protocol,pattern,structure,working principle and provide security services in the system described its basic principles.Finally, with China Telecom is a modem integrated information service provider to a strategic transformation of the needs of the times,from a technical,demand,industry chain and network analysis of four levels to provide IPSec VPN to a market need for value-added services.