把防火牆關閉
關閉: systemctl stop firewalld
啓動: systemctl start firewalld
查看所有打開的端口: firewall-cmd --zone=public --list-ports
查看當前所有tcp端口:netstat -ntlp
開放端口永久生效--permanent:firewall-cmd --zone=public --add-port=80/tcp --permanent
參考原文鏈接:https://blog.csdn.net/qq_38902769/article/details/88352609