開啟指定端口：
firewall-cmd --zone=public --add-port=端口號/tcp --permanent
開啟指定端口后必須重啟防火墻浦译，重啟命令
systemctl restart firewalld.service
查看防火墻狀態(tài)
systemctl status firewalld.service
開啟防火墻
systemctl start firewalld.service
禁止開機(jī)啟動
systemctl disable firewalld.service
開啟開機(jī)啟動
systemctl enable firewalld.service
查看已開放端口
firewall-cmd --list-ports
轉(zhuǎn)載自centos 7 開放指定端口.
