troubleshooting Question

Nat Problems with two xbox 360s, playing Halo 2 ... and can you change ports for xbox live ?

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activeckc asked on
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Open NAT and two xbox's.  Playing Halo 2.  Australia, ISP is Internode.

For background, if you don't know what I'm talking about when I refer to open NAT, you may want to refer to the following:

http://www.xbox.com/en-US/support/connecttolive/xbox/connectionmethods/diagnosingconnections.htm

I have an understanding it has to do with UPNP, and perhaps the degree SPI in the NAT implementation.

I Know that port forwarding and putting the client in the DMZ will solve the issue if i only have one xbox....

I have two xbox 360s.

I am using a web excel (no name) AL-2108TC modem/router - supports UPNP, turned on.

Both xbox's report open NAT - when both are connected or each separately.

When only using one xbox we seem to have no worries - what you would expect with Open NAT.

But when we are using both xbox's at the same time we have problems connecting to some users : ( with one of the xbox's - which one can vary.  (sometimes cannot hear peoples voice and vis versa in pre game lobby, some people cannot connect to game)

Is there a way around this problem?

Can you change what port the 360 uses for xbox live that i can port forward to two different ports?  (due to the nature of p2p gaming - I'm not sure that this would work anyway).
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