cnetos7 系统防火墙常见操作

启动防火墙

systemctl start firewalld

关闭防火墙

systemctl stop firewalld

查看防火墙状态

systemctl status firewalld

开启启用防火墙

systemctl enable firewalld

开机禁用防火墙

systemctl disable firewalld

开放某个端口，例如8080端口

firewall-cmd --zone=public --add-port=8080/tcp --permanent

重新加载配置

firewall-cmd --reload

查看防火墙开放的端口

firewall-cmd --zone=public --list-ports

查看某个端口的访问权限

firewall-cmd --zone=public --query-port=8080/tcp

关闭某个端口的防火墙

firewall-cmd --zone=public --remove-port=8080/tcp --permanent