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How-To Set Up with Uverse Gateway with Airport Extreme

I just spent hours figuring this out so I thought it would be helpful to someone. Maybe, maybe not. My goal was to get Back to My Mac turned on...but this should also be how you set up your wireless network if you have both an Airport Extreme and a Uverse Gateway.

As I was trying to setup BTMM, I got a "double NAT" error. To use BTMM, you have to use either Time Capsule or Airport Extreme, so that NAT has to be enabled. That meant I had to figure out how to turn off U-verse's. I looked through the settings but saw nothing about it. Several hours of research--and a useless support call to AT&T--I finally figured it out. Here's the configuration you need, in brief.

On the Airport Extreme, under Internet > Internet Connections, Connection Sharing must be set to "Share a public IP address". Then under the NAT button, Enable NAT Port Mapping Protocol must be checked.

Now, unless you doe rest of this configuration, you will get a double DHCP error. So, in the Uverse Gateway settings, you must do this:

1. Under Wireless, click the option to DISABLE wireless. Click Save.

2. Under Firewall, click the option with DMZ in the name. On this page, choose your Airport Extreme (whatever you named it). Then scroll down and choose the option that says "Allow All Applications (DMZPlus Mode)". Save that configuration. DO A HARD RESET ON THE AIRPORT EXTREME. Then that should enable a single NAT protocol and BTMM will be on its way. And your wireless network will be set up properly.

27" iMac, 3.6 GHz i5, 4 GB DDR3 RAM, 256 GB SSD, 1 TB HD, Mac OS X (10.6.4), iPhone 4, Photoshop CS3, iWork 08, Final Cut Studio 3

Posted on Oct 29, 2010 3:31 PM

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Posted on Oct 30, 2010 7:45 AM

Sorry I just realized in re-reading my post that someone might take "hard reset" wrong. I meant power cycle the Airport Extreme.
21 replies

May 4, 2011 7:27 PM in response to Bob Timmons

I appreciate the response. I think I may have a more unique set up than most btw. Will the above method work on a set up with a Verizon Modem to a DLink wireless router to a Time Capsule? I understand that this is the preferred method for most people using a modem and a router, but was wondering if a 2 router system will still work.


To answer a question you may be thinking about asking, my house is huge and my office/den is literally set approx. 175 feet around 2 major corners and hallways away from the entry point. The main entry point for Verizon cannot be relocated, so that is where the original router is set. I can't get a signal at all from the router at this end of the house, so I can't eliminate the interim router.


Weird thing is Air Video set up tells me I have a double NAT, but I've successfully VPN'ed my way to my Macbook from the internet with a simple port route, which I didn't think possible with a double NAT. Would your method be smarter than setting up a port routing situation? It's getting cumbersome now having to open up Plex, Air Video, VPN and remote access.


Thanks!

May 4, 2011 7:42 PM in response to bobbywolfe

Will the above method work on a set up with a Verizon Modem to a DLink wireless router to a Time Capsule?

I know of no reason why it would not. Whenever there is another router ahead of the Time Capsule, the Time Capsule must be configured in Briddge Mode. My network has 4 routers. The "main" router is setup to handle DHCP and NAT and the other 3 routers are setup in Bridge Mode. No problems.


Weird thing is Air Video set up tells me I have a double NAT

Double NAT occurs when you have two routers on a network both set up to handle DHCP and NAT services. Your Verizon "modem" may be a gateway....a combination modem/router on the same chassis. If that's the case, then every other router on the network must be confgured as a "Bridge".


If you have the "main" router on the network setup to handle DHCP and NAT, in theory, you can have multiple other routers on the network as long as they are all setup in Bridge Mode. In Bridge Mode, DHCP and NAT are turned off, so the other routers simply pass through the network information from the main router. It's by far the easiest way to configure multiple routers without having to go into special DMZ, port mapping, etc type of configurations.

Feb 9, 2012 7:47 PM in response to bpeacock22

I tried to do this but there is a new airport utility. I have a time capsule. I could do all the 2wire stuff, but the buttons are now different on the Airport Utility. How do I setup the time capsule side? I couldn't figure out how to share a public IP address. I kept on getting a double nat error message. The only way it would work is in bridge mode. I'm supposed to have a 12 mps download, but I'm only getting 3.5. HELP!

Oct 6, 2012 11:42 PM in response to bpeacock22

@mcshare Thanks, I was using the newer Airport Utility and didn't see some of these settings (Internet > Internet Connections...)


@bpeacock22 How is your Uverse Router set? When I try to set my Airport Extreme to use DMZplus, I get an error saying that it has a static ip and DMZplus requires devices to use DCHP. The Airport Extreme is set to receive an IP via DCHP, but the built-in 2Wire Router the Airport is connected to via ethernet is only allowing me to set it to Static.


I do have a Sprint AirRave connected directly to the 2Wire. Could this be the problem? I suppose I could put it in line between the modem and the Airport.

How-To Set Up with Uverse Gateway with Airport Extreme

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