添加(add)
firewall-cmd --permanent --zone=public --add-port=80/tcp
移除(remove)
firewall-cmd --permanent --zone=public --remove-port=80/tcp
重载(reload)
firewall-cmd --reload
检查是否生效
firewall-cmd --zone=public --query-port=80/tcp
列出所有的开放端口
firewall-cmd --list-all
查看防火墙状态
systemctl status firewalld.service
启动防火墙
systemctl start firewalld.service
关闭防火墙
systemctl stop firewalld.service
重新启动防火墙
systemctl restart firewalld.service