转: CentOS 7.X 关闭默认防火墙

关闭默认firewall：

https://blog.csdn.net/xiangxianghehe/article/details/75034840

systemctl stop firewalld.service #停止firewall
systemctl disable firewalld.service #禁止firewall开机启动
firewall-cmd --state #查看默认防火墙状态（关闭后显示notrunning，开启后显示running）