Using Cyberduck SFTP with Proxy

When trying to access an FTP server that is behind a corporate firewall or proxy, using an SFTP client like Cyberduck can be a challenge. However, with the right setup and configuration, you can successfully use Cyberduck to connect to the target machine through an intermediary SSH tunnel.

The solution involves creating an SSH tunnel to the intermediary machine, which allows you to access the target machine as if it were on your local network. The process is quite straightforward, but does require some technical knowledge of SSH tunnels and proxy configuration.

To start, you will need to have SSH access to the intermediary machine, which can be a computer on the same network as the target machine that you want to connect to. Once you have access to the intermediary machine, you can create an SSH tunnel using the `ssh` command. The basic syntax for this is `ssh -qTnN -D 4040 -C `.

This will establish a tunnel on your local machine at port 4040, which will be available for use as a SOCKS proxy. You can then configure Cyberduck to use this proxy by setting the SOCKS proxy address to `localhost:4040`.

Once you have set up the tunnel and configured Cyberduck to use it, you can enter the login credentials of the target machine in your FTP application, and voila! The connection should work.

It's worth noting that Cyberduck does not support SSH tunneling by itself, but there are ways to make it work. By creating an SSH tunnel to the intermediary machine and setting it up as a proxy through which Cyberduck will be able to connect to the target machine, you can successfully use the SFTP client to access the target machine.

In summary, using Cyberduck with a proxy requires some technical setup, but is possible by creating an SSH tunnel to an intermediary machine and configuring Cyberduck to use it as a SOCKS proxy. With this setup, you will be able to access the target machine through the proxy and connect to it using your SFTP client of choice.

Cyberduck sftp using proxy