4

Short question:

How do I connect to a local unix socket (~/test.sock) via ssh? This sockets forwards to an actual ssh server. The obvious does not work and I can't find any documentation:

public> ssh /home/username/test.sock
"ssh: Could not resolve hostname: /home/username/test.sock: Name of service not known"

Long Question:

The Problem I try to solve, is to connect from my (public) university server to my (local) PC, which is behind NAT and not visible to public.

The canonical solution is to create a ssh proxy/tunnel to local on public:

local> ssh -NR 2222:localhost:22 public

But this is not possible, as the administration prohibits creating ports. So I have thought about using UNIX socket instead, which works:

local> ssh -NR /home/username/test.sock:localhost:22 public

But now, how can I connect to it with ssh?

7

You should be able to do utilizing socat and ProxyCommand option for ssh. ProxyCommand configures ssh client to use proxy process for communicating with your server. socat establishes two-way communication between STDIN/STDOUT (socat and ssh client) and your UNIX socket.

ssh -o "ProxyCommand socat - UNIX-CLIENT:/home/username/test.sock" foo

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