(1)獲取活動的區域
[root@baomw-centos1 run]# firewall-cmd --get-active-zones
(2)開啓某個端口
[root@baomw-centos1 run]# firewall-cmd --zone=public --add-port=3306/tcp --permanent
(3)使用命令加載設置
[root@baomw-centos1 run]# firewall-cmd --reload
(4)查詢端口狀態
[root@baomw-centos1 run]# firewall-cmd --query-port=3306/tcp