Hi james:

I uselinux to freesshd either directly or via a sarian DR6XXX router (digi 
transport) for the ssh tunnels. I had bad luck using the command line ssh 
client doing this so I compiled putty for linux and it works PERFECT!

Maybe give putty a try. Freesshd doesn't like the default ssh client from linux.

Cheers,
John

----- Original Message -----
From: James Hinchey <[email protected]>
To: John Serink; [email protected] <[email protected]>
Sent: Fri May 06 23:21:07 2011
Subject: RE: VNC Via ssh tunnel

Guest = linux  (CentOS 4)
Gateway = linux  (CentOS 4)
Target = Windows or Linux 

It seems to work most of the time if the guest is windows.

-----Original Message-----
From: John Serink [mailto:[email protected]] 
Sent: Friday, May 06, 2011 3:32 AM
To: James Hinchey; [email protected]
Subject: RE: VNC Via ssh tunnel

What OS are you running on the guest machine?
What OS are you running on the gateway machine.
What OS are you running on the target machines?

Cheers,
John



-----Original Message-----
From: [email protected] [mailto:[email protected]]
On Behalf Of James Hinchey
Sent: Thursday, May 05, 2011 10:34 PM
To: [email protected]
Subject: VNC Via ssh tunnel


Hello, 

 

  I am having difficulty establishing vnc connections via an ssh tunnel.
We have a series of independent LANs, each one has one computer with an
interface to the wider network.  I need to be able to VNC through this
gateway computer to any other computer on the internal network.  I have
been attempting to do this using an ssh tunnel, but it doesn't  always
work.  

 

  I first establish the tunnel on the gateway machine with:

 

/usr/bin/ssh -L localport:remoteIP:5900 localhost sleep 60

 

  to allow the tunnel to expose a unique port for each computer inside
the network and attempt to connect to that port with vncviewer.

 

So if I want to make a VNC connection to 192.168.103.12, I would set up
the tunnel 

 

/usr/bin/ssh -L 12345:192.168.103.12:5900 localhost sleep 60

 

  and connect to "vncviewer gateway:12345"

 

This seems to work about 50% of the time.  The rest of the time I get

 

main:        unable to connect to host: Connection refused (111)

 

It is more likely to connect when running realvnc from windows than
linux, but still not 100% of the time.

 

 Has anyone done anything similar?  Am I missing something very obvious
here?

 

 Thanks for your help

 

James

 

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