On Friday 02 March 2007 21:05, Jean-Louis Dehoux wrote:
>  Here is the setup:
>
> 1 Laptop with XP Home with AVG Firewall
> 1 Desktop with XP Pro with Windows Firewall
> 1 2Wire HomePortal Modem/Router
>
> I downloaded and installed RealVNC 4.1.2 on both machines and set the
> connection port to 5901 on the laptop and 5902 on the desktop.
>
> On both machines, I opened their respective port in their firewalls and
> allowed winvnc.exe to communicate with the outside world.
>
> On the router, I forwarded incoming traffic on port 5901 to the laptop and
> port 5902 to the desktop.
>
> Using the VNC viewer, the machines see each other when using the local IPs
> such as 192.168.0.22:5901 from the desktop to view the laptop and
> 192.168.0.23:5902 from the laptop to view the desktop.
>
> Here where it gets crazy:
>
> Assume the public IP is 70.70.70.70 (as I would read it from a site such as
> WhatIsMyIP.com)
>
> I can view the laptop from the desktop using 70.70.70.70:5901
> But not the other way around. Aaargh...
>
> Any idea of what I am doing wrong???

Have you temporarily tried switching off the desktop WinXP firewall?  Have you
tried to telnet from the laptop to the desktop, port 5092?  What are you
getting?

--
Regards,
Mick

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