VPN中数据传输探讨

Research on VPN Data Transmission

虚拟专用网(VPN)指的是在公用网络上建立专用网络的技术,它成本低、安全性高且扩展性强.基于隧道协议的隧道技术是构建VPN的核心技术.VPN可以通过隧道技术、加解密技术、密钥管理技术、使用者与设备身份认证技术等技术保证数据传输的安全性.VPN的成本低、安全性高的特点必然会促使它不断的发展.

Virtual Private Network（VPN） refers to the technique which uses the public network to establish appropriation network,with cheap,safe and extending characteristics. Tunneling technology which based on the tunneling protocol is the nuclear technology of constructing VPN. VPN can make it security during data transmission by four kinds of technologies. They are tunneling teehnoh）gy, encryption ＆ decryption technology, Key management technology and user ＆ facility identity authentieation technology. The lower cost,high security prompt VPN to eontinue its development.