CentOS7开放端口命令

运行命令

sudo firewall-cmd --get-active-zones

开启端口号为3306

sudo firewall-cmd --zone=public --add-port=3306/tcp --permanent

开启后必须重启防火墙

sudo firewall-cmd --reload

查看端口号是否开启

sudo firewall-cmd --query-port=3306/tcp

关闭端口
sudo firewall-cmd --zone=public remove-port=3306/tcp --permanent