![]() On hop1: ssh -R 6666:127.0.0.1:5555 has the effect of building a tunnel from hop1 to origin while also pulling the active tunnel with it, making hop1's port 5555 (hop2's port 22) available on origin as port 6666. Now in that opened tunnel session, you can do the same from hop1 to file_origin. On hop2: ssh -R 5555:127.0.0.1:22 has the effect of building a tunnel from hop2 to hop1, making hop2's port 22 available on hop1 as port 5555 We're thereby defining a port to open on the remote PC, which will be a redirect to the port you pulled over with you when you built the tunnel. ![]() You can build tunnels making a local port available on a remote PC. origin:~/asdf.txt -> hop1 -> hop2:~/asdf.txt The PC that is file-origin, we'll call that origin. This farthest-hop PC, we'll call this hop2. Supposing you have an ssh session opened with the machine you want to send the file to. You can also do this in reverse and is maybe easier. %h and %p are placeholders for the host and port. This allows, for example, using ssh as a Prox圜ommand to route connections via intermediate servers. " This connects stdio on the client to a single port forward on the server. Per the release notes: Īdded a 'netcat mode' to ssh(1): "ssh -W host:port. The -W option is built into new(er) versions of OpenSSH, so this will only work on machines that have the minimum version (5.4, unless your distro back-ported any features e.g., RHEL6 OpenSSH 5.3p1 includes this feature). If you use the same user credentials in both servers: scp -o Prox圜ommand="ssh -W %h:%p The other way around also works (upload file): scp -i user2-cert.pem -o Prox圜ommand="ssh -i user1-cert.pem -W %h:%p you use password authentication instead, try with scp -o Prox圜ommand="ssh -W %h:%p scp -i user2-cert.pem -o Prox圜ommand="ssh -i user1-cert.pem -W %h:%p Internally the scp request is proxied via server1. The command below will copy files from a remotePath on server2 directly into your machine at localPath. It's possible and relatively easy, even when you need to use certificates for authentication (typical in AWS environments). ![]()
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