# iptables-save

备份iptables的表配置

## 补充说明

**iptables-save命令** 用于将linux内核中的iptables表导出到标准输出设备商，通常，使用shell中I/O重定向功能将其输出保存到指定文件中。

### 语法

```
iptables-save(选项)
```

### 选项

```
-c：指定要保存的iptables表时，保存当权的数据包计算器和字节计数器的值；
-t：指定要保存的表的名称。
```

### 实例

```
[root@localhost ~]# iptables-save -t filter > iptables.bak
[root@localhost ~]# cat iptables.bak
# Generated by iptables-save v1.3.5 on Thu Dec 26 21:25:15 2013
*filter
:INPUT DROP [48113:2690676]
:FORWARD accept [0:0]
:OUTPUT ACCEPT [3381959:1818595115]
-A INPUT -i lo -j ACCEPT
-A INPUT -p tcp -m tcp --dport 22 -j ACCEPT
-A INPUT -p tcp -m tcp --dport 80 -j ACCEPT
-A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
-A INPUT -p icmp -j ACCEPT
-A OUTPUT -o lo -j ACCEPT
COMMIT
```


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