This is what agent-forwarding does, it could be handy if it was available
for other uses too
Tim
----- Original Message -----
From: "Jon Peatfield" <J.S.Peatfield at damtp.cam.ac.uk>
To: <openssh-unix-dev at mindrot.org>
Sent: Tuesday, November 19, 2002 6:37 PM
Subject: forwarding features
> While messing with various tunnels it occured to me that there may be
> cases where some extra tunneling functionality would come in handy. I
> thought I better run it past the list before trying to implement a
> patch since the last 2 times I did this there was another way to
> get the effect I wanted with no code changes...
>
> Forwarding should not just be of AF_INET but (where available)
> AF_UNIX (ie forwarding unix-domain sockets). The syntax might be a
> little messy though.
>
> The ability to set up forwardings at any point, e.g. ssh to a host
> which runs some code to determine which ports need forwarding and it
> asks the sshd to negotiate with the client, or a user might want to
> add a new forwarded connection by typing some ~ stuff from the
> client end...
>
> The reason I've been thinking about this is that I need to be able to
> set up a -R tunnel, but I don't know the port to listen on since
> someone else may already be using that port (well I can select the
> port at random, but that isn't safe either -- perhaps port 0 should
> ask sshd to select any free port). If I could port-forward
> unix-domain sockets then the name could be guarenteed unique,
> similarly if the forwarding could be added after running code we would
> be ok too.
>
> [ Well I could do it with external code at both ends I suppose, but
> that just makes it harder to run on some platforms ... ]
>
> --
> Jon Peatfield, DAMTP, Computer Officer, University of Cambridge
> Telephone: +44 1223 3 37852 Mail: J.S.Peatfield at damtp.cam.ac.uk
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