vnc 'redirected'

[John Aldrich]

Well, you could set up a tunnel so that your machine behind the firewall
creates a tunnel to the machine with a "live" external IP and the machine
with a "live" IP routes all VNC traffic to the other machine.
	John

-----Original Message-----
From: Dario J. Cravero [mailto:dcravero "at" ciudad.com.ar]
Sent: Tuesday, February 22, 2005 11:29 AM
To: vnc-list "at" realvnc.com
Subject: vnc 'redirected'


Hi list!,
It's my first time here, but I've been using vnc for a time now and a 
question has came up to my mind. It may seem that it was already asked, 
but I don't really think it was... Here it goes:
At home I have a broadband connection which is behind a firewall put by 
the ISP. The problem is that the ISP won't allow any incoming traffic 
and the machines inside the LAN doesn't even get a unique public IP...
Graphical Situation:

box 1 --->|          |
box 2---> |LAN A| --------->         |                     |
box 3---->|           |                     |                        |
                                                    |                      |
                |LAN B| --------->         |                     |

                |..........| --------->         |       ISP          | 
------------->> internet

                |..........| --------->         |                     |

                |LAN X| ---------->        |                     |


I hope you can understand that... In other words, the ISP allows the 
users only to surf the net and they only receive what they've requested 
for. So you can't set up ANY server.
On the other part, I have another broadband connection on another city, 
where the ISP allows incoming connections.
The problem is that I want to manage the boxes inside the first ISP 
network from the second one.
As you might notice, I won't be able to set up a vnc server on the first 
side.
My question now, is the following: is there any way to make the VNC 
server work on those conditions?
Let's say I have machine A under the restricted zone which I want to 
connect from B and there's a DMZ zone named C (which will be on the same 
area than B that is running a VNC server). Is there any way that A can 
connect to C and act a server so B can connect to C and work in A?
Thanks and I hope you can understand what I was trying to say...
Any questions are welcome!
Cheers
Dario J. Cravero
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