关闭防火墙
AS7 关闭防火墙 systemctl stop firewalld.service
AS7 禁止防火墙开机启动 systemctl disable firewalld.service
AS6 关闭防火墙 service iptables stop
AS6 禁止防火墙开机启动 chkconfig iptables offAS7 关闭防火墙 systemctl stop 
