200 PORT command successful. Consider using PASV. Hungs.

[A.Fadyushin at it-centre.ru]

> -----Original Message-----
> From: Avi Ma'ayan
> Subject: 200 PORT command successful. Consider using PASV. Hungs.
>
> Hi,
>
> I am trying to tranfer a file from my desktop to a RedHat
> server using FTP. It used to work yesterday but today it just
> hungs after ftp>put file with this message: "200 PORT command
> successful. Consider using PASV." The file is create at the
> server but it is empty. I can do other ftp command such as
> "cd" which work fine. Any ideas? What might have broken, I
> haven't changed any setting? Could it be something with the network?
>

It is possible that the network administrator installed or reconfigured
the firewall. This message means that there is some filter between your
computer and FTP server and you are trying to use FTP in active mode.
That filter blocks the incoming connection from the server to your
computer (that connection would be user for the transmission of data
(files and listings of directories as opposed to FTP commands) from the
server. In such a situations all FTP commands except those which use
data channel (PUT, GET, DIR) will work.

You should use passive FTP mode to transfer the file through such a
firewall. That mode can usually be switched on using the PASV command on
the FTP client (different clients could have different methods for
changing the mode, you should see the manual for your FTP client).

Alexey Fadyushin
Brainbench MVP for Linux
http://www.brainbench.com