基于GRE VPN的校园网接入方式及实现

Access and Implementation of Campus Network Based on GRE VPN

校园网为学校的教学、科研、信息交流、协同工作等发挥着重要作用,在欠发达偏远地区如何能让校园网接入CERNET及发挥其应有的作用。对这一问题,首先从校园网中VPN的需求情况进行分析;其次对VPN主要技术协议进行比较,给出不同应用环境下VPN协议的选择方法;最后结合CERNET的远程接入,给出VPN的实现及典型案例,并对实现过程中的一些问题进行了分析,提出了解决方法。

Internet of campus is useful for scientific research, teaching, communicaion of information and cooperation of working. However,accessing campus internet into CERNET and making an important role in remote area is a challenge. The requirement of VPN in campus Internet is analysed. The center protocols of VPN are compared and the selecting methods for different applied conditions are given. The realizing procedure of VPN which considered the long- distance access of CERNET is proposed. For some problems in this procedure,the solutions are analysed.