centos防火墙常用命令

systemctl start firewalld;#启动
systemctl stop firewalld;#停止
systemctl status firewalld;#查看状态
systemctl disable firewalld;#开机禁用
systemctl enable firewalld;#开启启动
firewall-cmd --zone=public --add-port=80/tcp --permanent #开放80/tcp端口  （--permanent永久生效，没有此参数重启后失效）;
firewall-cmd --reload;#
firewall-cmd --zone= public --query-port=80/tcp;#查看80/tcp端口
firewall-cmd --zone= public --remove-port=80/tcp --permanent;#删除该端口开放