centos7防火墙启动关闭

1. 查看防火墙状态

systemctl status firewalld.service

2. 查看对外开放的端口号

firewall-cmd --list-ports

3. 添加端口号

firewall-cmd --zone=public --add-port=8888/tcp --permanent

4. 重启防火墙

firewall-cmd --reload

5. 关闭防火墙

systemctl stop firewalld.service

6. 开机关闭防火墙(永久关闭)

systemctl disable firewalld.service

7. 开机启动防火墙

systemctl enable firewalld.servbice