—-以下均为在centos7上进行的操作
—-防火墙上添加端口
firewall-cmd –zone=public –add-port=80/tcp –permanent
—-防火墙上删除端口
firewall-cmd –zone=public –remove-port=80/tcp –permanent
firewall-cmd –list-ports #查看已经开放的端口
firewall-cmd –reload #重启firewall
systemctl stop firewalld.service #停止firewall
systemctl disable firewalld.service #禁止firewall开机启动
firewall-cmd –state #查看默认防火墙状态(关闭后显示notrunning,开启后显示running)