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# DNAT

## `-j DNAT [options]`

常用的`options`有

* `--to-destination [ipaddr[-ipaddr]][:port[-port]]`

这是一个`Terminating Target`

## 示例

* 只变IP

```
iptables -t nat -I OUTPUT -d 1.1.1.1 --to-destination 172.26.0.4
```

* 端口有变

由于只有部分协议（`TCP`、`UDP`、`DCCP`和`SCTP`）才有端口这个属性，所以在包含有端口时，必须指定协议类型；也就是说，这个包在匹配时，必须要匹配到上述四个扩展中的某一个

```
iptables -t nat -I OUTPUT -p tcp --to-destination 172.26.0.4:8080
```

上述的规则就会把从本机上所有进程发出去的TCP包，都转到`172.26.0.4:8080`去


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