环境如下： A机器两块网卡eth0(192.168.0.173)、eth1(192.168.100.1)，eth0可以上外网，eth1仅仅是内部网络，B机器只有eth1（192.168.100.3），和A机器eth1可以通信互联。需求让B机器可以连接外网，端口转发，通过A:1122连接B:22 iptables实现：注意：如果不能成功需要清空iptables规则，重新添加命令： iptab....

文章 2022-02-16 来自：开发者社区

IPtables之四：NAT原理和配置

NAT一般情况下分为SNAT，DNAT和PNAT 此篇主要讲述的是使用iptables配置NAT，所以这3种NAT的区别和应用场景就简单的说明一下 SNAT：源地址转换目标地址不变，重新改写源地址，并在本机建立NAT表项，当数据返回时，根据NAT表将目的地址数据改写为数据发送出去时候的源地址，并发送给主机目前大多都是解决内网用户用同一个公网地址上网的情况 DNAT：...

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更新时间 2024-06-27 09:37:00

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