systemctl start firewalld.service # 启动firewall
systemctl stop firewalld.service # 停止firewall
systemctl disable firewalld.service  # 禁止firewall开机启动

systemctl start iptables.service # 启动iptables

systemctl stop iptables.service # 停止iptables

systemctl disable iptables.service # 禁止iptables开机启动