Re: [JSch-users] problem with tightvnc over SSH (Jsch) (SOLVED)

[Andre C. <and...@nr...>]

Greetings,

After trying out some different things with my code and looking at other
people's code, I found that the problem was cause by my call to

session.setPortForwardingL(localPort, remoteHost, remotePort);

I had the remote system's hostname as the 2nd argument.  I changed this
to '127.0.0.1' and it seems like it is working fine now.

Thanks,
	Andre

Andre Charbonneau wrote:
> Hello,
> 
> I've been using tightvnc over SSH for a while now and lately I wanted to
> add more security by using the -localhost switch on the vncserver
> command.  Since that change my clients can't connect anymore.
> 
> One thing I noticed in the vnc log files (before I added the -localhost
> switch) is that for the line that says:
> 
> 	Got connection from client aaa.bbb.ccc.ddd
> 
> I get the full IP address of the system running the tightvnc server, as
> opposed to 127.0.0.1, which makes me think that maybe this is why it
> does not work when I enable the -localhost switch.  The IP address is
> the right one, since tunneling is used, but I don't understand why it is
> the system's IP address instead of '127.0.0.1'.  Is this something
> related to the way I do the SSH tunneling?
> 
> With the -localhost switch, in the vnc logfile I simply get:
> 
> 	X connection to :2.0 broken (explicit kill or server shutdown).
> 
> 
> The SSH tunnel is created using the Jsch SSH libraries (local port
> forwarding), and the VNC viewer on the client's system is the tightvnc
> Java viewer.
> 
> Any information about this would be much appreciated.
> 
> 
> Regards,
> 	Andre
> 
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-- 
Andre Charbonneau
100 Sussex Drive, Rm 2025
Research Computing Support, IMSB
National Research Council Canada
Ottawa, ON, Canada K1A 0R6