500 syntax error command unrecognized

[vadiro]

Hi,
I configured an filezilla server on a computer runing win7. The computer is connected to a switch. Also to the switch, is connected a digital microscop. When the microscop is trying to save photos on the server I receive this error:

000005)10/01/2012 12:46:34 - (not logged in) (1xxxxxxxxxxxxxxxxx)> 220 Welcome!
(000005)10/01/2012 12:46:34 - (not logged in) (1xxxxxxxxxxxxxxxxx)> USER nikon
(000005)10/01/2012 12:46:34 - (not logged in) (1xxxxxxxxxxxxxxxxx)> 331 Password required for nikon
(000005)10/01/2012 12:46:34 - (not logged in) (1xxxxxxxxxxxxxxxxx)> PASS ***
(000005)10/01/2012 12:46:34 - nikon (1xxxxxxxxxxxxxxxxx)> 230 Logged on
(000005)10/01/2012 12:46:34 - nikon (1xxxxxxxxxxxxxxxxx)> SYS
(000005)10/01/2012 12:46:34 - nikon (1xxxxxxxxxxxxxxxxx)> 500 Syntax error, command unrecognized.
(000005)10/01/2012 12:46:34 - nikon (1xxxxxxxxxxxxxxxxx)> QUIT
(000005)10/01/2012 12:46:34 - nikon (1xxxxxxxxxxxxxxxxx)> 221 Goodbye
(000005)10/01/2012 12:46:34 - nikon (1xxxxxxxxxxxxxxxxx)> disconnected.

If i check the server with a client is working fine.

Where should be the problem?

[boco]

Looks like a bug in the microscope's FTP client. The command in question is called SYST, the device is missing a ''T''. Thus the syntax error.

Now I find it mildly amusing for such a serious bug slipping through. Obviously the thing hasn't been tested thoroughly. Unfortunately, such embedded clients are not that easy to update/fix. Look for a firmware update on the manufacturer's homepage.

From FileZilla Server's point of view, nothing can be done. The client sends an invalid FTP command, and FZS rightfully rejects it. Then the client simply aborts. Aborting the session is entirely the FTP client's decision; if it would simply carry on, you weren't here.

Only an update from the microscope vendor can fix that issue. If it can't be updated, it is a defect and you can claim your rights as a customer.