1:查看防火狀態
systemctl status firewalld
service iptables status
2:暫時關閉防火牆
systemctl stop firewalld
service iptables stop
3:永久關閉防火牆
systemctl disable firewalld
chkconfig iptables off
4:重啓防火牆
systemctl enable firewalld
service iptables restart
5:永久關閉後重啓
chkconfig iptables on