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[newuser1]

I'm using an AT&T 2Wire RG as a modem, then using a DIR-655 as a router (with OpenDNS).  I'm attempting to play Age of Mythology.  I understand that the ports at issue are 2300-2400, 6073, and 28800-28805.  I want to enable two computers on my network to play a LAN/directIP game with each other.

One computer is running XP, the other is Windows 7.  

How do I go about setting this up?  I've had a miserable go at it so far, and the research I've done on the net isn't helpful.  I tried port forwarding, but from the FAQ, it looks like that would only work for one of my computers, not both.  Should I be doing something different?  

Thanks in advance.  And for what it's worth, I have zero idea what I'm doing.  Just trying different things, reading as much as I can on the net, and giving it a shot.

[FurryNutz]

Sounds like the 2wire is DSL and has a built in router?
If so, then having the 655 on the same line will probably not connect well and the modem router and the 655 is causing Translation issues.

Is there a web page for the modem? It's preferred to bridge the DSL modem and use the 655 router as the main router. I would call your ISP and ask about his for the modem. If not, see if you can put the 655 routers IP address it gets from the ISP modem into the ISP modems DMZ.

[newuser1]

Sounds like the 2wire is DSL and has a built in router?

Yes, but I've turned off the built-in router and am just using it as a modem.
Is there a web page for the modem? It's preferred to bridge the DSL modem and use the 655 router as the main router. [/quote]

I think that's what I'm doing--I took the DSL modem, turned off wireless, connected it straight to the DIR-655, and then use the DIR-655 as a wireless router for my house.

[FurryNutz]

Well need to make sure the DSL modem is fully bridged. Turning off the wireless on the modem isn't enough. If the modem supports it, there are menu options on the modems web page that has specific options for bridging. I would call the ISP and have them help you with this. Then you'll need to set the 655 router for Internet Connections to PPPoE using the DSL account information that your ISP provides for you.

[newuser1]

I followed the instructions here:  http://sbbala.com/uverse/pg2.html

So my understanding is that I'm using the RG as a modem, but not bridging.

[FurryNutz]

Does the 655 connect well in this mode for the modem?

[Hard Harry]

I think it goes Wireless Router > Wired Router > Modem > Bridge in order from most to least amount of work the 2wire RG does. As a wireless router, it does everything, and pluging the 655 into it would be like plugging a 655 into another 655. As a wired router, you can set the 655 as a wireless access point. The 2wire still does all the routing, NAT, firewall, etc, but the 655 handles the wireless part. As a modem, the only thing the 2wire does is the PPPoE handshake. It still has routing functions (since it's own LAN ports still provide 192 IP's) but the traffic to and from the 655 is outside the routing, and any misc traffic not assigned to any other computers gets dumped in the 655. In bridge mode, all it does it some basic handling of the traffic on lower layers, and leaves everything else to the 655. Which means it gets EVERYTHING coming physically through the phone wire into the 2wire. It even handles the password send. Some ISP don't work this way. Since it only accept the PPPoE handshake from the modem they have on file.

**More**
Now with all that said. Lets get back to your OP. Your trying to get a LAN game? Hell, you don't even need the 2wire. Just use the 2wire as a full wireless router, and use the 655 to just create a LAN. You don't need internet for a LAN...thats the whole point. I know for a fact. My ex played Civs 2 for months on a DGL-4300 with no internet what so ever. Just a power cord to the router, wireless to two laptops. As long as your 2wire network and 655 network have different names, you should be fine. Where I think your actually problem is the networking between XP and 7, and nothing to do with the router.