【作者】 丛荣华；

【导师】 杨喜权；

【作者基本信息】 东北师范大学 ， 计算机应用技术， 2006， 硕士

【摘要】 近年来,随着企业对信息需求的不断提高,为增强自身的竞争力,企业逐步完善和发展自己的Intranet。由自己构建Intranet到外包Intranet即租用电信网构建VPN,以降低成本,提高效益。同时为提高跨区域办公需要,迫切需要VPDN环境,来提高全球信息通信。本文在简要介绍了VPDN第2层实现的基本原理基础之上,对VPDN关键技术进行了分析,比较了PPTP(Point to Point Tunneling Protocol)和L2TP(Layer 2 TunnelingProtocol)隧道协议封装形势以及IPSec的安全特点。提出了第3层基于MPLS(MultiProtocol Label Switch)实现VPDN的设计方法以及VPDN需要进一步研究的问题。该方案能够有效的降低封装开销,为第3层VPDN实现提供解决方案。更多还原

【Abstract】 Recently, with the improvement of requirement to the information for theenterprises, for enhance itself capability of the competition, the enterprisesis developing and completing its Intranet by and by. So, the enterprisesconstruct the Intranet to contract outwardly the Intranet, that is, renderingthe telecommunication to construct VPN. The result is reduction of the productioncosts and evaluation of the benefit. At the same time, for the reason of thedifferent area’s work, we need the VPDN environment to enhance the capabilityof global communication. VPDN(Virtual Private Dialup Network) extends VPN(Virtual Private Network)in the applications. The basic theory of VPDN is introduction to realizationlayer and some key issues are discussed. The tunnel protocols of PPTP (Pointto Point Tunneling Protocol) and L2TP (Layer 2 Tunneling Protocol) are comparedand security characteristic of IPSec (Internet Protocol Secutity) is analyzed.This paper puts forward design method of VPDN on MPLS (Multi Protocol Label Switch)in the realization of third layer and more study problems. This project caneffectively reduce encapsulation cost and offer a profitable think of designfor third layer VPDN.更多还原