1:查看防火状态
**systemctl status firewalld**
**service iptables status**
2:暂时关闭防火墙
systemctl stop firewalld
service iptables stop
3:永久关闭防火墙
systemctl disable firewalld
chkconfig iptables off
4:重启防火墙
systemctl enable firewalld
service iptables restart
5:永久关闭后重启
//暂时还没有试过chkconfig iptables on