Scenario:
Computer A ---(ssh)---> Computer B ---(ssh)---> Computer C

I'm trying to transfer files from Computer C straight to Computer A. Computer C is only reachable from Computer B. I'm trying to transfer large files straight from Computer C to Computer A without first having to send them to Computer B (as I don't have permissions to store data on Computer B). Is there a way to accomplish this? Could I setup a tunnel?

I'm using ssh for all my logins. Computer A is often running Windows (with pscp and putty), but could be running unix as well.

I've searched the forum, but come up with nothing. All help and links are appreciated!

Use ssh's tunneling capability.

Do this:

ssh -L 9876:compC:22 compB

Leave that terminal and open another on compA. Then, copy your files directly from compA to compC:

scp -P 9876 *.files localhost:

You can do this with putty as well, but I don't know how.