1、打開防火墻
systemctl start firewalld

2、關(guān)閉防火墻
systemctl stop firewalld

systemctl stop firewalld.service

3、查看防火墻狀態(tài)
systemctl status firewalld

systemctl status firewalld.service

4、啟用防火墻
systemctl enable firewalld

5、禁用防火墻（禁止防火墻開機(jī)自啟動(dòng)）
systemctl disable firewalld

systemctl disable firewalld.service