Wow. I didn't even know Crapintoshes could do NAT... But more to the
point, can't you just block all outsiders from ports 5800-5999? Those
are the ports VNC uses. Oh, and if you're on a Mac you can only use
display 0 which would only use ports 5800(for the web service) and
5900(for the meat & potatoes)

On 25 Nov 2001 23:12:16 -0800, Isaac Wingfield wrote:
> I'm running ChromiVNC on a Mac which is serving as a dual-NIC firewall --
> cable modem on one NIC, local network on the other, with IPNetRouter in
> between.
> 
> It is necessary for the "external" IP to be on the built-in NIC, and the
> internal LAN on the other. Open Transport and IPNR require it that way.
> 
> VNC persists in finding the internal NIC, and so the exposed IP and using
> it. While that works alright, I do not want to risk the exposure of VNC to
> the internet, but I cannot figure out how to tell it to use the "inside"
> IP, which is in the 192.168.x.x space.
> 
> thanks, Isaac
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