局域网与专线网络的互联.doc
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局域网与专线网络的互联,论文标准word格式排版目 录第一章vpn的工作原理 4第二章vpn的特点及vpn的分类 52.1vpn的特点 52.2vpn的分类 62.2.1 intranet vpn 62.2.2access vpn 72.2.3extranet vpn 8第三章ip vpn 的安全机制 83.1认证技术 93.2加密技术简介...
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此文档由会员 莎士比亚 发布
论文标准WORD格式排版
目 录
第一章vpn的工作原理 4
第二章vpn的特点及vpn的分类 5
2.1 vpn的特点 5
2.2 vpn的分类 6
2.2.1 Intranet VPN 6
2.2.2 Access VPN 7
2.2.3 Extranet VPN 8
第三章IP VPN 的安全机制 8
3.1认证技术 9
3.2 加密技术简介 9
3.3 密钥的交换与管理 10
第四章IPSec 及VPN 10
第五章隧道协议和基本隧道要求 10
5.1 令牌卡（Tokencard）支持 11
5.2 数据压缩 11
5.3 数据加密 11
5.4 密钥管理 11
5.5 多协议支持 11
第六章 典型实例 vpn拓扑图 12
第七章 VPN发展趋势 12
第八章 IP VPN市场 13
8.1 Internet成为了全球信息基础设施 14
8.2 全球经济一体化 14
8.3 IP VPN为企业和服务提供商实现了双赢 14
结论 14
致 谢 15
参考文献 16
摘要：VPN是指虚拟专用网络，英文全称是Virtual Private Network。它不是真正的专用网络，是利用公有网络（利用Internet）将多个私有网络通过一定方法连接起来。使用公用网络进行连接的好处是可以降低通信及设备的成本。
在网络中的计算机可以通过IP地址，能够直接进行通信的。但是这些计算机的网络是不能直接互联的，原因就是这些私有网络和公有网络使用了不同的协议和地址空间等等，这说明了一个问题：私有网络和公有网络是不兼容的。VPN的原理就是在私有网络和公有网络之间建立一个条专用的通道。让私有网络之间的通信经过计算机或网络设备打包然后通过公有网络的专门的通道进行传输，然后传到对端之后进行解包，还原为私有网络之后将网络信息转发到私有网络中。这样对于两个私有网络和公有网络就像普通的通信电缆，而在公有网络上的计算机或网络设备就能很好的同信了。
由上面可知vpn中要解决两个很重要的问题就是在网络传送中的安全问题还有传输之后的解包问题。而且在传送中还要解决之间的传输之间的协议问题
关键词：虚拟专用网 安全协议 VPN、IP SEC、隧道技术、加密技术、L2TP
Virtual Private Network
Abstract ：VPN is to refer to suppositional special use network , the English full name is Virtual Private Network. It is not real special use network , is to make use of the public network (make use of Internet) to will be the private network more by the fact that certain method links up. Using the public network to carry out connected benefit is to be able to reduce communication and the equipment cost.
Can pass IP address in computer in network , be able to be in progress directly communicating by letter. These computer networks have been to be able to not interconnection directly but , cause has it is these private networks and public network to have used different agreement and address space etc. , this has explained a problem: The private network and the public network are no compatible. The VPN principle it is between private network and public network to build a special-purpose passage. And then dodge the communication between private network a computer passes or network equipment packs and then transfer by the fact that network special public passage is in progress, conduct arriving at the parcel carrying out a solution on end afterwards, restore for the private network believes a network afterwards
May need to resolve very important two problems it is safe problem in delivering in the network to there are still in knowing vpn by higher authority transmission afterwards solve package of problems. And transmission between wanting to solve too in transference between agreement problem
Keywords: Suppositional special use net safety agreement VPN , IP SEC , tunnel technology, encrypt the technology , L2TP
目 录
第一章vpn的工作原理 4
第二章vpn的特点及vpn的分类 5
2.1 vpn的特点 5
2.2 vpn的分类 6
2.2.1 Intranet VPN 6
2.2.2 Access VPN 7
2.2.3 Extranet VPN 8
第三章IP VPN 的安全机制 8
3.1认证技术 9
3.2 加密技术简介 9
3.3 密钥的交换与管理 10
第四章IPSec 及VPN 10
第五章隧道协议和基本隧道要求 10
5.1 令牌卡（Tokencard）支持 11
5.2 数据压缩 11
5.3 数据加密 11
5.4 密钥管理 11
5.5 多协议支持 11
第六章 典型实例 vpn拓扑图 12
第七章 VPN发展趋势 12
第八章 IP VPN市场 13
8.1 Internet成为了全球信息基础设施 14
8.2 全球经济一体化 14
8.3 IP VPN为企业和服务提供商实现了双赢 14
结论 14
致 谢 15
参考文献 16
摘要：VPN是指虚拟专用网络，英文全称是Virtual Private Network。它不是真正的专用网络，是利用公有网络（利用Internet）将多个私有网络通过一定方法连接起来。使用公用网络进行连接的好处是可以降低通信及设备的成本。
在网络中的计算机可以通过IP地址，能够直接进行通信的。但是这些计算机的网络是不能直接互联的，原因就是这些私有网络和公有网络使用了不同的协议和地址空间等等，这说明了一个问题：私有网络和公有网络是不兼容的。VPN的原理就是在私有网络和公有网络之间建立一个条专用的通道。让私有网络之间的通信经过计算机或网络设备打包然后通过公有网络的专门的通道进行传输，然后传到对端之后进行解包，还原为私有网络之后将网络信息转发到私有网络中。这样对于两个私有网络和公有网络就像普通的通信电缆，而在公有网络上的计算机或网络设备就能很好的同信了。
由上面可知vpn中要解决两个很重要的问题就是在网络传送中的安全问题还有传输之后的解包问题。而且在传送中还要解决之间的传输之间的协议问题
关键词：虚拟专用网 安全协议 VPN、IP SEC、隧道技术、加密技术、L2TP
Virtual Private Network
Abstract ：VPN is to refer to suppositional special use network , the English full name is Virtual Private Network. It is not real special use network , is to make use of the public network (make use of Internet) to will be the private network more by the fact that certain method links up. Using the public network to carry out connected benefit is to be able to reduce communication and the equipment cost.
Can pass IP address in computer in network , be able to be in progress directly communicating by letter. These computer networks have been to be able to not interconnection directly but , cause has it is these private networks and public network to have used different agreement and address space etc. , this has explained a problem: The private network and the public network are no compatible. The VPN principle it is between private network and public network to build a special-purpose passage. And then dodge the communication between private network a computer passes or network equipment packs and then transfer by the fact that network special public passage is in progress, conduct arriving at the parcel carrying out a solution on end afterwards, restore for the private network believes a network afterwards
May need to resolve very important two problems it is safe problem in delivering in the network to there are still in knowing vpn by higher authority transmission afterwards solve package of problems. And transmission between wanting to solve too in transference between agreement problem
Keywords: Suppositional special use net safety agreement VPN , IP SEC , tunnel technology, encrypt the technology , L2TP
