---
#### **防火墻**
查看防火墻狀態
```
systemctl status firewalld
```
開啟防火墻
```
systemctl start firewalld
```
關閉防火墻
```
systemctl stop firewalld
```
查看當前firewall狀態
```
systemctl status firewalld
firewall-cmd --state
```
重啟firewall
```
firewall-cmd --reload
```
禁止開機啟動
```
systemctl disable firewalld.service
```
查看已經開放的端口
```
firewall-cmd --list-ports
```
開啟端口
```
firewall-cmd --zone=public --add-port=80/tcp --permanent
```
