防火墙通用命令：sudo systemctl [ 命令] firewalld
查看防火墙状态：sudo systemctl status firewalld
关闭防护墙，开机恢复：sudo systemctl stop firewalld
关闭防护墙，开机不恢复：sudo systemctl disable firewalld
开启防火墙，开机恢复：sudo systemctl start firewalld
开启防火墙，开机恢复：sudo systemctl enable firewalld
原文：https://www.cnblogs.com/hellodaydream/p/14840890.html