辣鸡--------centos7 关闭防火墙

centos7的方式：

systemctl stop firewalld.service #停止防火墙

systemctl start firewalld.service #开启防火墙

systemctl status firewalld.service #查看防火墙状态

systemctl enable firewalld.service #开机自启 “启用”

systemctl disable firewalld.service #开机自启 “禁用