基于Packet Tracer实现GRE VPN

Implementation of GRE VPN Based on the Packet Tracer

在网络工程中,经常遇到分布在不同地理位置的总部与分部通过ISP网络连接起来,实现公司内部资源共享的情况,可以在ISP公共网络中建立一条隧道,实现总部与分部路由信息交换,达到相互通信的目的。本文利用Packet Tracer模拟器模拟公司总部与分部实现GRE VPN,达到两台电脑主机通过私有地址互相通信。

In the network project, it is common that the headquarter and branches located in different places are connected through the ISP net, sharing the company inner resources. A tunnel can be built in the ISP public network to conduct information exchange between the headquarter and the branches. The Packet Tracer simulator is adopted to simulate the GRE VPN process between the headquarter and branches to achieve the goal of mutual communication through private addresses of the two computers.