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VPN是一种快速建立广域联接的互联和访问工具,也是一种强化网络安全和管理的工具。VPN建立在用户的物理网络之上、融入在用户的网络应用系统之中。是企业网在Internet等公共网络上的延伸,通过私有的通道在公共网络上创建一个安全的私有连接,通过可靠的加密技术方法保证其安全性,并且是作为一个公共网络的一部存在。VPN本质上是一个虚信道,用来连接两个专用网,对传送数据的安全性要求非常高。如何来保证vpnd在公网中传输的数据安全性,这是一个非常值得我们探讨的问题。
VPN is a fast means of establishing a wide area connection of the Internet and access tools, but also to strengthen network security and management tools. VPN built on the user’s physical network, integrated into the user’s network application system. Is an extension of the corporate network over public networks such as the Internet, creating a secure, private connection over the public network through a private channel, securing it through secure encryption techniques, and being part of a public network. VPN is essentially a virtual channel, used to connect two private networks, the security requirements of the transmission of data is very high. How to ensure vpnd data transmission in the public network security, which is a very worthwhile discussion of the issue.