firewall 防火墙

firewall-cmd --zone=public --add-port=80/tcp --permanent #开启80端口
firewall-cmd --zone=public --add-port=443/tcp --permanent #开启443端口
firewall-cmd --query-port=80/tcp #查看80 端口是否开通
firewall-cmd --reload #重启防火墙
firewall-cmd --list-all #查看端口开启情况
firewall-cmd --list-port #之查看端口开启情况
systemctl stop firewall.service #停止firewall
systemctl start firewall.service #开启firewall
systemctl disable firewall.service #禁止firewall开机启动