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详解iptables防火墙SNAT、DNAT地址转换工作原理及使用-人生得一名师足矣、
source link: http://blog.51cto.com/11905606/2155909
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NAT简介NAT是将私有IP地址通过边界路由转换成外网IP地址，在边界路由的NAT地址转换表中记录下这个转换，当数据返回时，路由使用NAT技术查询NAT转换表，再将目标地址替换成内网用户IP地址。SNAT策略局域网主机共享单个公网IP地址接入Internet（内网的地址改成公网）DNAT策略目标地址转换SNAT、DNAT工作原理SNAT局域网PC封装源、目ip（源地址：192.168.100.77
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