502 Command not implemented

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wartsnall
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Sydney, Australia

502 Command not implemented

Hi,

I am trying to connect to a remote FTP host (not under my control) using FTP with TLS/SSL Explicit encryption with a signed client certificate.

I get connected, certificate handshake takes place, I receive welcome message and session is started. I beleive once the PWD command is issued the host throws multiple errors retrying...

The following error is displayed..
"Error getting name of current remote directory
Command Not Implemented"

I've tried enabling and disabling Passive connectivity. I received the same errors.

My log file is attached.

Any assistance would be greatly appreciated.

Thanks
Nathan
  • VISA-EAS-FTPS.log (6.86 KB, Private file)

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martin
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Prague, Czechia

Re: 502 Command not implemented

If you server does not support the PWD command, you cannot use WinSCP to connect to ti, unfortunately.
Were you able to use any other FTP client? I believe that most GUI clients will have the same requirement.

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wartsnall
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Location:
Sydney, Australia

Re: 502 Command not implemented

I tested with CuteFTP and FileZilla today. They all error in similar fashion.

Only difference being with CuteFTP, under Global Preferences, you can tell it not to perform a PWD.
Unfortunately, it only errors again but this time on when the LIST command is used.

Can usage of the PWD and LIST commands be disabled on WINSCP? Or are these commands built in (automatically issued) as part of normal session establishment?

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