Centos8关闭防火墙
systemctl status firewalld.service(查看防火墙状态)
active表示当前防火墙处于开启状态 inactive表示关闭状态
systemctl stop firewalld.service (关闭防火墙)
systemctl start firewalld.service (开启防火墙)
systemctl disable firewalld.service (禁止防火墙自启动)
systemctl enable firewalld.service (防火墙随系统开启启动)