Vnc over two connected tunnels

[gleesonger]

Hi im trying to set up a VNC with my home computer (vnc server) which is behind a NAT router and trying to connect to it from work (vnc client) also behind a NAT router.Both routers are paid for by work the flip side is that I don't have access to either therefore I cant set up port forwarding I do however have access to my college ssh server.Work and home run XP college runs Lunix running SSH-2.0-OpenSSH_4.7p1 Debian-8ubuntu1.2.What I want to do is set up a permanent tunnel from home to college and then connect from work to college and have college route the traffic home.I'm using putty to create the tunnels.I however am find this difficult also not helped by the fact that I don't know how to use ssh.exe properly to set up the internal port forwarding on the college ssh server.Any help would be most appreciated.



Thanks Ger.

[redge]

[user=10936][/user] maybe can help you very experienced user and programmer of tools with SSH and VNC

actually, i'm beginner of SSH in the middle.

[mattice06082]

I run an SSH server on the same machine as my VNC server and documented the setup [topic=5890]Tunnel VNC through SSH[/topic].

[JDaus]

Hi im trying to set up a VNC with my home computer (vnc server) which is behind a NAT router and trying to connect to it from work (vnc client) also behind a NAT router.

Two connections required:

• *VNC Server* -------> SSH Server
  *VNC Client* ---------> SSH Server

The "Server" connection needs to create a "remote" SSH tunnel (plink.exe -R 5900:127.0.0.1:25900 server.address)
The "Client" connection needs to create a "local" SSH tunnel (plink.exe -L 25900:127.0.0.1:25900 server.address)

Connect to localhost:25900 with VNC

What I want to do is set up a permanent tunnel from home to college and then connect from work to college and have college route the traffic home.

there are a few different applications out there that will install as a service, but none that i know of that are open source ...

I don't know how to use ssh.exe properly to set up the internal port forwarding on the college ssh server.Any help would be most appreciated.

Remote ssh tunnels can often be turned off by addministrators ... this may be the case

hope this helps

[JDaus]

a script i created some time back which will create and maintain an ssh connection

http://www.autoitscript.com/forum/index ... t&p=487347

a bit of shameless self promotion ... but hopefully this might help

if you need help with this, or anything else, let me know ... my rates are reasonable ...

[gleesonger]

Thanks very much for your response I'm currently trying to get it to work by running a Lunix version of Ultra's repeater on the server, but your way looks alot simpler.As for maintaining a constant ssh tunnel Ill use MyEn Tunnel.

Thanks again Ger.

[gleesonger]

Yes it works thank you so much for a good while I tried the idea of connecting two tunnels with plink I however used "plink -L..." for both tunnels so it never worked.One letter change and it all falls into place.

Current setup:

Server Side

Code: Select all

vnc server on default settings (listening to 5900)
plink running with arguments: plink.exe -R 5800:localhost:5900 server.address

Client Side:

Code: Select all

vnc viewer pointed at localhost:5500
plink running with arguments: plink.exe -L 5500:localhost:5800 server.address

The reason my ports are not the usuall is because I have the viewer\server on same computer for testing purposes.

Thanks again for your help.

[JDaus]

Yes it works ... One letter change and it all falls into place.

It took me a while to learn the tricks i shared above, that ONE LITTLE *#$#^ LETTER .......

one comment, i would suggest you use a random(ish) port on the server to try and isolate it from being used by VNC (by someone else maybe) or having someone try to hack your VNC server.

I have used nemesis tunnel before, but have had a few troubles with stability (over a year ago now)

Please let us all know how it goes in a few months, if youv'e made improvements etc...

glad to have helped you solve your problem