Server unexpectedly closed network connection

[BillS]

I'm able to send files to and retrieve files from an IBM (now Toshiba) 4690 OS server quite successfully. But now and then, the server (or intermediate network hardware?) goes into a state where it will only allow some data to be retrieved from the server before the connection is closed. FileZilla tries over and over again but it doesn't get very far before it logs that the connection is closed.

When this happens, I'm able to use SecureNetTerm to retrieve the same file from the same server with no problem! And if I then try to use FileZilla ... it still has problems. I wonder what SecureNetTerm is doing differently from FileZilla?

[BillS]

FileZilla version info plus debug at level 4.

[Tim Kosse]

Trace: Server version: SSH-2.0-OpenSSH_3.8.1p1-OS4690

Oh my, that's old. There's a good possibility that this is the cause of the problem you are experiencing.

You want to upgrade to a more recent (pronounce: the most recent) version of OpenSSH, also since there are several security vulnerabilities in this old version of OpenSSH.

Do you still experience this after updating the server to the most recent version of OpenSSH?

[BillS]

It's a proprietary operating system. May take me a little while to update the O/S to get a more recent version of OpenSSH -- which is customized for this O/S. Let's close this. If/when I update the O/S, and if I come across the problem again, I can re-open this ticket or create another ticket.