CentOS 7 FTP 服务需要开启的埠

CentOS7.x 自带 firewall 防火墙，FTP 使用需要开启 20 21 22 30000-35000 几个埠.
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
新增成功后，重启防火墙, 即可！
systemctl restart firewalld.service