Centos7-firewall<防火墙设置>

1、查看防火墙状态   systemctl status firewalld.service2、启动防火墙   systemctl start firewalld.service3、关闭防火墙   systemctl stop firewalld.service4、重新启动防火墙   systemctl restart firewalld.service5、列出所有的开放端口   firewall-cmd --list-all6、添加开放端口    firewall-cmd --permanent --zone=public --add-port=80/tcp7、移除端口    firewall-cmd --permanent --zone=public --remove-port=80/tcp 8、配置生效重载    firewall-cmd --reload9、查询    firewall-cmd --zone=public --query-port=80/tcp