### 1. 查看防火墙状态

```bash
 systemctl status firewalld.service
```

### 2. 关闭防火墙

```bash
 systemctl stop firewalld.service
```

### 3. 禁用防火墙

```bash
 systemctl disable firewalld.service
```

### 4. 启用防火墙

```bash
 systemctl enable firewalld.service
```

### 5. 开启防火墙

```bash
 systemctl start firewalld.service
```



