• 开启指定端口： firewall-cmd —zone=public —add-port=22380/tcp —permanent
• 开启指定端口后必须重启防火墙，重启命令: systemctl restart firewalld.service
• 查看防火墙状态 systemctl status firewalld.service
• 开启防火墙 systemctl start firewalld.service
• 查看已开放端口 firewall-cmd —list-ports
• systemctl stop firewalld # 关闭防火墙
• systemctl disable firewalld # 禁用防火墙