Jonathan:

        Heya. Some quick thoughts:

> Yes, I can connect to the Vnc host machine through another computer
> thats on the router.  But when I try to connect to the Vnc host machine
> thats on the router through a machine thats outside the router it
> doesn't work.

        As William suggested, this is actually a feature of your
firewall/router, not a bug. :) The thing to keep in mind...is that
your firewall/router is doing "address translation" for you, on
the fly. So the IP address your PC has *inside* your network is
not the same IP address your PC appears to have *outside* the
network. This is called Network Address Translation (or NAT). If
you combine it with Port Address Translation (aka, PAT or IP
Masquerading), you can have a whole bunch of PC's on a LAN share a
single IP address given to your router by your ISP. Which, as you
can imagine, most ISP's hate.

        Anyhow. Try this: fire up a browser on the VNC server that's
behind the firewall/router. Point it to "www.GoToMyVNC.com". This
page will show you what your PC's IP address appears to be out in
the Real World. Then go to your WinXP machine, and point the VNC
Viewer to this IP address. If you got your firewall/router setup
correctly, it will connect.

        Good luck!

-Scott

PS: Anyone notice that RealVNC 3.3.4 is available now? Woo. :)
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