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How to set up a SSH reverse proxy?

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Fadel Radji

I have a project whose goal is to make a script that analyses incoming SSH traffic and redirects it to the targeted server as well as several mirror SSH servers for control and intrusion detection.

For that, I need a SSH reverse proxy that is able to decrypt incoming SSH traffic and log it in cleartext so that my script can process it.

What's the simplest way of doing that ? I've tried using ssh-mitm, it's good but only gives the traffic after authentication, I need to see in cleartext all the traffic after the key exchange.

I then tried mitmproxy. It is able to handle SSL traffic but it can't decrypt SSH messages.

I've also seen NGINX used as a reverse proxy, but I think it is not able to decrypt SSH traffic as I want to.

I hope everything was clear. I will be awaiting for your answers, thanks in advance et have a nice day :)

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