Complicated strict NAT problem on Xbox Live

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quintox

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I'll try to make this short.

Situation:
3 Xbox 360s
1 Belkin N150 Connect router (F7D5301), hooks up a PC, 2 360s, and the router listed below
1 Belkin Wirelss N router (F5D8236-4 V2) serving as access point, connects a 360 only.
Getting strict NAT on Call of Duty Black Ops

We all connect to Live and even get in games fine, but sitting in lobby and if we are in a game and people get kicked, they usually don't connect new players. So while it's OK and we can still play, there are some annoyances.

Anyway, I've tried opening ports (which works once I go to re-test the connection through the Live dashboard, but then about 10 minutes later it goes back to strict), upgrading to latest firmware via website, even DMZ'd one of the Xboxes to no avail. I cannot figure out how to get these to Open.

Any suggestions?

EDIT: All 360s are wired connections.
 
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You say you are using the FSD8236 as an access point, so you are not using the WAN porrect correct, just plugging into the LAN port from the incoming connection?
 

quintox

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Yeah, but what would that have to do with NAT? Both routers work..?
 
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Because if you are using the second router as a router, by have the first router plugged into its WAN port, and not an access point, then it creates a separate network and another layer of NAT.

If the second router is truly being used as an access point then all the port forwarding needs to be done from the FD75380.
 
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And what is the make and model of your modem? If it is a modem/router combo and not strictly a modem then there is another layer of NAT.
 

quintox

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Because if you are using the second router as a router, by have the first router plugged into its WAN port, and not an access point, then it creates a separate network and another layer of NAT.

If the second router is truly being used as an access point then all the port forwarding needs to be done from the FD75380.
The 1st router is incoming into the Modem port on the 2nd router. I understand how this could be strict NAT for the one Xbox that is connected to Router #2, but shouldn't the first 2 Xbox's still be Open?

(I did the port forwarding on Router #1)
 

quintox

Thread Starter
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And what is the make and model of your modem? If it is a modem/router combo and not strictly a modem then there is another layer of NAT.
I don't think it's the modem; I had an older Belkin router (G) and it was open NAT, once I switched to an N router, it went strict.
 
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Do all the XBOX's have static IP's or does the router allow you to manage devices by their MAC addresses?
 

quintox

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Dec 17, 2008
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It's a cable modem, no name, I looked everywhere. I have Charter. All I could find was this model #: U10C018

srhoades, thanks by the way, I appreciate the help
 
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Can you double check the model and version number of the N150, I can't find that model anywhere.
 
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Well the manual is somewhat lacking, so that was no help. Do you have UPnP enabled in the router?
 
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