1、查看当前的防火墙状态 systemctl status firewalld 2、临时手动关闭防火墙 systemctl stop firewalld 3、手动重启防火墙 systemclt restart firewalld 4、永久关闭防火墙 systemctl disable firewalld 5、关闭防火墙后重新开启防火墙 systemctl enable firewalld