CentOS关闭防火墙

查看状态：

systemctl status firewalld

开启：

systemctl start firewalld

临时关闭：

systemctl stop firewalld

永久关闭：

systemctl stop firewalld
systemctl disable firewalld

仅执行systemctl disable firewalld只能保证以后不开启，但不能关闭目前开启的防火墙

Reference

https://cloud.tencent.com/developer/article/1869020