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IP Routing question w/ winxp

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I am using a wireless cable mdm with built in router/nat which auto assigns ips 192.168.. to my computers. I used whatismyip.com to get the real ip, let's call it "a". my computer ip is "b". Since there is no way to access the modem like a regular router to configure ip forwarding, can I use the winxp route command to route "a" to "b" so I can host internet games? Thz for any insights.

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by pwiddicombe

If you're trying to allow the internet to get at one of your computers, most of the cable routers out there provide for either a DMZ situation where ONE computer will get requests appearing on the external router interface; or forwarding a particular protocol/port to that computer on the inside. You'll have to figure out what ports the internal application (game) need so those get to your host computer.

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