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I must transfer several huge files from a remote machine A to my local computer. The problem is that I can not access A directly, but instead I must access via another remote machine B. Unfortunately, machine B has a very limited amount of space, so I can not copy the files from A to B and then from B to local. Instead, I would need to use B as a kind of proxy.

I was thinking in something as simple as possible that does not need to install or configure anything, hopefully simply using sftp, scp o ssh.

Does anyone know how to do that?

danny_met
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  • I can't access from A to local either. I have been looking at the SSH tunnel thing, but on one hand I can't find clear documentation and on another it seems I would need root privileges on B, which I haven't (on both A and B I am a simple user). – danny_met Dec 03 '20 at 16:17
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    Use B as Jumphost and then you can use sftp or scp to/from A via B. – pLumo Dec 03 '20 at 16:41

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Solved! After looking into pLumo's suggestions, I found that

sftp -o "ProxyJump userB@serverB" userA@serverA

did the trick! Thanks a lot!

danny_met
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