用iptables实现NAT方式上网
Posted in Linux on 1月 10th, 2010 by 飘(piao2010) – 3 Comments在学校用了两年多的代理上网（Linux+OpenVPN+Squid），由于代理服务器（个人猜测应该是位于校园网DMZ）和寝室属于不同网络，一直没办法实现NAT方式上网。下午尝试着在VPN接入服务器的基础上进行NAT测试，但是失败了，如果在正常的网络环境中应该是比较容易实现的。以下部分开始转载：（根据自己的理解添加了中文注释）
This tutorial shows how to set up network-address-translation (NAT) on a Linux system with iptables rules so that the system can act as a gateway and provide internet access to multiple hosts on a local network using a single public IP address. This is achieved by rewriting the source and/or destination addresses of IP packets as they pass through the NAT system.
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