ftpssh
Not sure how to phrase this exactly. I have a school web server which I have to access to sshing to one server, and then from there ssh to another. Is there anyway I can set something up to bypass the first server, so I can access the 2nd server directly?
Perhaps I should mention that I'm working from my home windows machine. I've mentioned sshing, but like the title says, I want to FTP my files using something like FileZilla, not some command-line interface (PuTTy).
There is no cross specification of HTTP and FTP which would allow the two to interact. Someone, somewhere, would have to download, and then upload it.
If you have shell access to the web server, the easiest way would be to upload it directly from the webserver to the ftp server with the ftp command (Assuming it's a *nix server.)
If you have shell access to the ftp server, then you could also use the wget command to download the file directly to the ftp server, again assuming it's a *nix server.
Use a SOCKS proxy.
The source port is now (locally) a SOCKS proxy. Configure FileZilla to use it as a SOCKS proxy (see below). It'll open a connection through that to the host you ssh to (your work machine) and then connect from there, to any IP address you give it. Works for anything with supports SOCKS and that includes FTP.
The rest of the PuTTY config just remains the same - configure the ports (as shown) and then connect that PuTTY session to your Work machine via SSH.
Here's what the FileZilla option needs to look like,
When you put in the target for the FTP connection, use the IP address not the hostname, because DNS resolution may still happen locally and you don't want that.
The whole thing is secure and invisible - it looks like a basic SSH connection to anything else on the network.
NB: If you want to do this from the command line, you can use PuTTY's plink.exe to do the following,
plink -ssh -D 9090 you@your.work.laptop.example
it achieves the same thing without having to create a PuTTY profile or use the GUI.
Best Answer
You might want to check out OpenSSH's
ProxyCommand, which allows you to specify an arbitrary command to establish a tunnel. In this case, you'd use an ssh connection to the first server, running something likenetcatto connect to the second server. This is especially handy if you use public key authentification to connect to the first server, otherwise, you need to enter two passwords.The relevant
.ssh/config-snippet looks like this: