在 Windows Server 2008 R2 Standard 机器上，我无法连接到 Windows FTP 服务器并从其下载文件。
文件大小约为 3KB 到 6KB。很少有~100KB 到~500KB，但服务器有足够的磁盘空间。
我试过被动连接：
Response: 220-Microsoft FTP Service
Response: 220 Regal Logistics
Command: USER ********
Response: 331 Password required for ********.
Command: PASS ********
Response: 230 User ******** logged in.
Status: Connected
Status: Starting download of /********/PO/201405130227.xml
Command: CWD /********/PO
Response: 250 CWD command successful.
Command: TYPE A
Response: 200 Type set to A.
Command: PASV
Response: 227 Entering Passive Mode (***,***,***,**,19,64)
Command: RETR 201405130227.xml
Response: 125 Data …