FTP locks up from command line

Hi

I have installed a new router, a Mikrotik RB951G in place of a Cisco ASA 5505

Now when I run an ftp session from the Windows command line
and try to put a file I don't get the normal response

With one FTP server the session times out without so much as a response to my put request

With another server I get both of the following responses, then nothing (until timeout):
200 PORT command successful
150 Opening data channel for file transfer

the file doesn't get transferred
is this a firewall port issue ?

thanks
yann
Yann ShukorOwnerAsked:
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ZabagaRCommented:
From the server that gave you the "200 PORT command successful" can you FTP using windows explorer. If that works, it's an active vs. passive FTP issue, which would be resolved at the router. It would mean port 21 was open for the initial connection but the data channel / port was being blocked.

http://slacksite.com/other/ftp.html
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