Re: Port forwarding and PC listening question
From: Dave Markham (dave.markham_at_fjserv.net)
Date: 01/14/04
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To: <secureshell@securityfocus.com>, "Roy Hampton" <Roy.W.Hampton@nasa.gov> Date: Wed, 14 Jan 2004 14:29:05 -0000
With cygwin you are not running an xserver. You will need to run
startxwin,.sh
this will enable an x server on your desktop and bring up a bash window. Run
you ssh -X etc then and all should work
Dave
----- Original Message -----
From: "Roy Hampton" <Roy.W.Hampton@nasa.gov>
To: <secureshell@securityfocus.com>
Sent: Tuesday, January 13, 2004 6:20 PM
Subject: Port forwarding and PC listening question
> People:
> I hope someone can give me a boost.
> I am trying to use OpenSSH in cygwin environment to access unix machines
> from a windows 2000 PC, and to use port forwarding to obtain a license for
> operation of software using flexlm license server on the remote unix
machine.
>
> I have done this just fine in the past with TTERMPRO with ttssh, using the
> command
> DefaultForwarding=X;Lwin_port:host:host_port where win_port is the port on
> my windows machine, and host is the remote unix box, where the license is
> served on host_port. I have an environment variable on my PC machine
> "dual" which aims the licence environment variable for flexlm at
win_port@dual
>
> Now, I have to convert to use SSH version 2 to access through the
firewalls
> at NASA, and have to change to something with SSH v2.
>
> I installed cygwin with OpenSSH, and have successfully connected to the
> remote unix machine, using the ssh command:
> ssh -l username -X -v -v -v -Lwin_port:host:host_port host, where win_port
> is the port number on my PC, etc.
> ssh verbose mode tells me
>
> "debug1: Connections to local port xxxx forwarded to remote address
> host:host_port"
> "debug1: Local forwarding listening on 127.0.0.1 port win_port"
>
> [where I replaced actual port numbers, host name, etc. in above text with
> win_port, host, etc. for security reasons]
>
> When I try to start the software needing to find the flexlm license at
> win_port it does not find it.
>
> I suspect the cygwin or OpenSSH has to explicitly connect the 127.0.0.1
> localhost to the PC network somehow, but I don't know how to do it.
>
> Suggestions?
> Roy
>
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