多路由校园网访问策略的选择和实现

为了提高校园网的出口带宽和安全性，探讨了在Linux服务器上运用策略路由、网络地址翻译等技术和构造Linux防火墙将校园网与教育科研网、本地ISP宽带互联网高速连接起来，有效解决网络出口瓶颈并同时降低网络费用，多出口并行，从而使用户既可以合理利用现有教育科研网资源，又可以利用本地ISP宽带互联网高速上网．

The Choice and Application(Implementation) of Multi-access Policy for Campus Network

In order to increase the speed of the campus network and its security,this article does the basic research of apply the policy routing and network address translation(NAT) technology based on Linux server and build the firewall based on Linux kernel to make campus network,the education and research network(CERNET) and the CHINANET join together with at a high speed at the same timeso that it can resolve the traffic of bandwitdth on outlet of network and reduce the cost.With the multi-outlet,the campus users not only can make full useof the resource of CERNET but also can access the CHINANET in high speed.