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
CentOS7防火墙操作
原文：https://www.cnblogs.com/mingfan/p/12715778.html
