FTP upload troubles

Can connect, can download, but uploads fail

[Sylver]

I am running into a very strange problem:

I can connect on my FTP server (so no login issues), I can download files from my server, but I can't upload anything. The connection dies within a couple seconds.I have the required permissions to upload.

I have tried with other computers and it works fine (using the exact same settings), so there is definitely something on my computer preventing me from uploading.

There is no firewall and no router.

Uploads fail without specific error message: The thread stops, and the client logs back in, open the folder, tries to upload, fails, and starts again.

I am using Filezilla, but I have tried a handful of other programs as well, with the same (lack of) results. Besides, I can connect from other computers using Filezilla.

Any idea what could be the source of the problem?

[Receptional Andy]

Microsoft update to IE 7 causes FTP Failures [webmasterworld.com]?

[mjwalshe]

have you tried going back to first pricipals and used the command line ftp?

[Sylver]

Thanks for the suggestion. I have never used FTP from a command line, so I am not too sure about what can be done through the command line which can not be done using the GUI but I don't see how it would help in this case.

I can connect and upload files from other computers through FTP using the exact same programs and FTP settings, so the problem is most likely not with the FTP software, but with other settings on my computer or conflicts at port level.

Could command line FTP be used to see what is happening on that?

[PaulMHill]

How long has this been happening? Is FTP the only protocol suffering this issue? Do you use a symmetric link? If not, the up link may be suffering timeout issues.