[RESOLVED] Only allow 1 copmuter to access internet through router

I have a wireless router and 2 computers. I want the two computers to be able to be on a network together to share data, but only one of them to be able to access the Internet. I want the other to be completely safe and protected from the Internet. (Please don't tell me to just install firewall software...) I thought that this is what DMZ was, but now I think I'm wrong. How can I achieve this?

Thanks in advance :)

BTW router is a DLink DIR-615, a laptop with WinXP Pro(can access internet), and computer with WinXP Pro(want to block from Internet, but not from LAN)

Change the default gateway on the XP PC so that it can't access the Internet.

I thought of that, but that doesn't stop hackers coming in from the Internet I don;t think...

Check your router settings, most will still allow your XP PC to get an IP address through DHCP but you can block WAN routing to and from.

http://www.support.dlink.com/emulato...ort_adv.htm#08

DMZ simply means that it forwards every port for a particular computer. It has nothing to do with preventing other computers accessing.

Thank you dbasnett - that's exactly what I was looking for - I must have skimmed over it when looking for DMZ

And Thanks Orwell, I realized that after reading a bit more about it. The description of DMZ on my own router is very poor...

yes they are. I figured it out myself reading a reference. It doesn't help that it is used to mean two different things. It is also used as a reference to a computer that gives other computers access to the internet in a network.

A demarcation zone (DMZ) is a name for a secure 'bubble' within a local area network which has specific firewall rules applied to it to severely restrict traffic which crosses the boundaries of the DMZ.

I don't like citing Wikipedia but their entry on this is a pretty good summary.
http://en.wikipedia.org/wiki/Demilit...one_(computing)