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Old 11-14-2009, 05:37 PM   #16
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Hello fralacos,

I tried your instructions but I could not make them work for me. Assuming I followed your instructions correctly (and perhaps that is not a valid assumption!), I believe the reason it did not work is because I also need the data ports forwarded down the tunnel, and not just the control port.

The method I outlined above allows for the data ports to be known in advance and therefore forwarded down the tunnel.

Please let me know if I did not follow your method correctly and the data ports should have been forwarded down the tunnel as well?

Thanks and regards,
Old 10-16-2011, 07:34 AM   #17
Eeek Th£ Bear
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Location: Norwich
Distribution: Debian_AMD64
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Talking Thank you!!

Originally Posted by fralacos View Post

I got this working using putty 0.60 for setting up a dynamic tunnel, with this kind of tunnel PuTTY provides a local SOCKS 4/4A/5 proxy on a local port. Your FTP client must be set to use this local SOCKS proxy and passive mode.

Not so detailed Instructions:

  1. Open putty configuration.
  2. Set up an SSH connection to your SSH server as usual (host, port, etc.)
  3. Go to Connection > SSH > Tunnels.
  4. Fill in source port, this is the port where SOCKS proxy will listen, so you FTP client should be set to use<source port> as socks proxy.
  5. Destination: empty, not used for dynamic tunnels.
  6. Select Dynamic radio button.
  7. (optional) Go back to session and save you settings.
  8. Connect to your SSH server!

on FTP client:
  1. Configure your FTP client to use a SOCKS proxy at<source port>.
  2. Configure your FTP client to use PASSIVE mode.
  3. FTP connection must be opened to actual FTP server address and port, for example Note that your SSH server must be able to reach your FTP server at that IP address and port.


PS: I'm a frequently visitor of this forums and got lot of help from here, just now i have this chance to help back so ... hope it helps!

Legend! Long story short I'm in IT, tunnelling etc is a frequent requirement in my role, I knew I wanted to use a dynamic tunnel in PUTTY to get around FTP's damn dual port set-up but hadn't considered adding a proxy to my FTP client!! You are a star, works like a charm!


encrypted, ftp, passive, pasv, secure, ssh, tunnel

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