1、停止 firewalld# systemctl stop 酆璁冻嘌firewalld# systemctl mask firewalld
2、安装 iptables-servicesyum install iptables-services
3、再查看防火墙状态service iptables status
4、开启 iptables#service iptables start
5、把 iptables 加到开机启动项中# systemctl enable iptables
6、保存防火墙规则service iptables save
7、检查状态service iptables start