CentOS7防火墙操作

如题：

临时关闭防火墙
systemctl stop firewalld
永久防火墙开机自关闭
systemctl disable firewalld
临时打开防火墙
systemctl start firewalld
防火墙开机启动
systemctl enable firewalld
查看防火墙状态
systemctl status firewalld