安装

yuminstall-y firewalld systemctl start firewalld systemctlenablefirewalld systemctl status firewalld

查看当前已开放端口，会看到类似 ports: 8080/tcp

firewall-cmd --list-all

开放8080端口

firewall-cmd --add-port=8080/tcp --permanent firewall-cmd --reload

验证成功

firewall-cmd --list-all

*删除端口

firewall-cmd --remove-port=8080/tcp --permanent firewall-cmd --reload