查看防火墙命令：systemctl status firewalld.service
执行关闭命令： systemctl stop firewalld.service
开机禁用防火墙自启命令 ： systemctl disable firewalld.service
启动：systemctl start firewalld.service
防火墙随系统开启启动 ： systemctl enable firewalld.service
开启防火墙
参考博客:
https://blog.csdn.net/shubingzhuoxue/article/details/84578749