CentOS 7 FTP 服務需要開啟的埠

CentOS7.x 自帶 firewall 防火牆，FTP 使用需要開啟 20 21 22 30000-35000 幾個埠.
操作命令如下：
firewall-cmd –zone=public –add-port=20/tcp –permanent
firewall-cmd –zone=public –add-port=21/tcp –permanent
firewall-cmd –zone=public –add-port=22/tcp –permanent
firewall-cmd –zone=public –add-port=30000-35000/tcp –permanent
firewall-cmd –zone=public –add-port=20/udp –permanent
firewall-cmd –zone=public –add-port=21/udp –permanent
firewall-cmd –zone=public –add-port=30000-35000/udp –permanent
新增成功後，重啟防火牆, 即可！
systemctl restart firewalld.service