CentOS 7 防火墙设置

打开防火墙：systemctl start firewalld.service
关闭防火墙:   systemctl stop firewalld.service
禁止防火墙开机自启动: systemctl disable firewalld.service
设置防火墙开机自启动: systemctl enable firewalld.service
查看防火墙状态: systemctl status firewalld.service