Re: SSH Connection Issue: No configured security type

[John S. <John_Serink@Trimble.com>]

Hi brendan:

I assume you are using freesshd but even if you aren't the setup is the same.

You MUST instruct the ssh server to:
1. Enable tunneling,
2. Enable tunneling to local host.

You must also tell tvnc to accept connections from localhost since this is where the tunnel will come from, assuming the ssh server is also on the tvnc server.

Assuming you ssh/tvnc computer is 192.168.1.3, you need to tell putty that it must creat a tunnel from 192.168.1.3:5900 to say localhost:12000. Once you ssh is up, doing a netstat -a -p tcp -n -o should show you a service waiting for connection on 127.0.0.1:12000. Now, use the tvnc viewer and open. Session to locahost:12000.

That should work.

If you computer is behind a NAT wall with public IP 1.2.3.4, you need to put a PAT entry in from say 1.2.3.4:10022 to 192.168.1.3:22. Now, in putty create a new session to ssh to 1.2.3.4:10022 and also tell putting to open up a tunnel between 192.168.1.3:5900 to localhost:12000. You connect as above.

You might find that you NAT wall router support ssh tunneling on its own. If its unix based it should. Cisco IOS does not but many other routers do. You can the ssh tunnel via thius nat router to you windows box.

Give that a go and tell us how you get on.

Cheers,
John

________________________________

From: Brendan Ratter 
To: vnc...@li... 
Sent: Wed Mar 02 20:38:10 2011
Subject: SSH Connection Issue: No configured security type 


Hi All,

I have set up TightVNC Server on a Win7 64-bit platform. I can connect with no problems using TightVNC viewer through port 5900 directly.
I have also set up an SSH server on the same computer, which is working through PuTTY. I have also set up a tunnel in PuTTY to localhost:5900

When I try to connect with TightVNC Viewer to the server through the SSH (using localhost:0) as the server, I get the following error message: "No configured security type is supported by 3.3 viewer", and the connection fails

I have not been able to find a solution to this, but it looks like I am missing something fairly straightforward, so any help is appreciated.

Regards,
Brendan