摘要
VPN(虚拟专用网)是在公共网的基础上建立的适合用户需求的虚拟网络,它可以节省费用,同时又具有高度安全性。介绍了VPN的相关技术,尤其是隧道技术,并分析了基于各层协议(第2层隧道协议PPTP/L2TF和第3层隧道协议IPSec)建立隧道的过程、方法和优缺点。
The concepts and correlative technologies , especially about the tunneling technology of VPN are introduced. The procedures of building tunnels by using different protocols such as PPTP/L2TF (layer two) and IPSec (layer three) are analyzed and compared.
出处
《计算机工程与设计》
CSCD
2003年第12期82-85,共4页
Computer Engineering and Design
