为了解决端到端的数据安全,许多VPN(虚拟专网)方案被提出,比如PPTP、L2TP、L2F VPN以及MPLSVPN等。VPN是企业网在Internet上的拓展和延伸,VPN通过一个私有的通道来创建一个安全的私有连接。将远程用户、分支机构、业务伙伴等跟企业网连接起来,形成一个扩展的网络。基于目前的安全现状,国内的网络安全产品提供商东软推出了NetEye VPN。该产品采用了先进的IPSec In order to solve the end-to-end data security, many VPN (Virtual Private Network) solutions are proposed, such as PPTP, L2TP, L2F VPN and MPLSVPN. VPN is the expansion and extension of the enterprise network on the Internet. The VPN creates a secure private connection through a private channel. Connect remote users, branch offices, business partners, and other corporate networks to form an extended network. Based on the current security status quo, Neusoft, a domestic network security product provider, introduced NetEye VPN. The product uses advanced IPSec