Question about Arris SBG1000 Wireless Cable Modem Gateway Router (493989-001-00)

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Xbox & nat

My pc is hardwired to a motorola gateway modem, my daughter uses a wireless modem, and the xbox is wireless. I set my modem to open nat my daughter can connect and the xbox works but the pc wont. what did I miss?

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Re: xbox & nat

  1. The most likely problem is that your Pc IP is on different subnet try and change your pc to dynamic i.e Obtain IP address automatically.

Posted on Dec 30, 2007

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1 Answer

I need to make my Nat type open instead of moderate. How do I do that?

I just opened my NAT type to play xbox live...using a SURFboard Motorola.
And this site helped me alot:

but watch this video first, cause it will help out allot too:

With these guides, and bit of web reading from other peoples FAQ's.. I did it.

The guide you need will depend on what modem/router you have.

Good Luck

Jan 13, 2011 | Arris SURFboard SBG900 Wireless Router...

1 Answer

My router is on, and is hooked up to my verizon modem. My xbox 360 and my computer are both hooked up to the router and all the lights are on but only my computer is working for the internet where my 360...

with verizon, you need to set the modem to full bridged mode so that the connection from your modem will be opened. This certain firewall is called NAT. Your modem and your router has this feature. To disable NAT on your modem, you need to set it to full bridged mode. To disable the NAT on your router, you need to open ports on your router.

You need to open this port on the router for Xbox live to work
TCP: 80, 3074, 53

UDP: 88, 3074

forward it to the ip of your Xbox.

this should set the NAT on your xbox to open, not moderate.

Sep 18, 2010 | Dell TrueMobile 2300 Wireless Broadband...

1 Answer

I have a 3347 motorola modem and I have two

If you have a Private IP address from the Modem like,, etc.... the the NAT will be an issue, for games like Dawn of Death 2 which need more Bandwidth when joining the Game Server the WAN IP address which is from your Modem need to Public like,, etc... if you have a WAN IP address then check the Firmware of your router and if possible get the specific port number from the Game Administrator and open it on your router so that you wont have NAT issues.

Mar 23, 2010 | Netopia 3347W-KIT ADSL Wireless Gateway,...

1 Answer

How to open NAT on router

To open NAT
On the Windows Desktop, click Start.
2 Select Run. The Run window is displayed.
3 Type cmd /or/ command and click OK.
4 On Command prompt window (black screen) type ipconfig
5 Check the Default Gateway (192.168.?.?)
6 Open IE - on the address bar type http://192.168.?.? enter

It will open the router page
Gateway > LAN — nat config Page
Check Page No 47 on the Manual
Check the Manual
SBG1000 Wireless Cable Modem Gateway User Guide

Enable NAT If enabled, the single HFC IP Address (public IP address) assigned by the cable service
provider is mapped to many private IP addresses on the SBG LAN.

Jan 04, 2010 | Arris SBG1000 Wireless Cable Modem Gateway...

1 Answer

I can't connect to x-box live. It says my NAT settings are "moderate". How do I change that setting?

You'll just need to do open ports for xbox live. Go to for more information on how to do it.

Jun 22, 2009 | Arris SBG1000 Wireless Cable Modem Gateway...

1 Answer

Need to make NAT settings to open for xbox live.

Open up your internet explorer then go to tools then internet options then make the changes nessessary i would recommend you go to google on what to change specificly

Mar 23, 2009 | Arris SBG1000 Wireless Cable Modem Gateway...

1 Answer

Open NAT with Thomson (Speedtouch) TG585 v7 Router

First, try adding a wireless card to the Xbox, run the wireless off of the router OR if you have multiple connections (broadband, should be an "In" port, and several "Out" ports) Try connecting your PC and you Xbox through the "Out" ports, with the cable modem cord hooked into the "In" port...

Feb 02, 2009 | Gateway Belkin 54g Wireless DSL/Cable...

1 Answer

Change NAT to open

You need to call xbox live tech support. From there they will give you a code. This code will need to be entered in the settings for you wireless interenet product under "Port range forwarding."

Dec 28, 2008 | Arris SURFboard SBG900 Wireless Router...

2 Answers

How do i open my NAT w/ my xbox 360 with this router?

You can either disable your NAT (not recommended) or you can port forward. Here is a link that describes the port forward process.


Dec 02, 2008 | Arris SURFboard SBG900 Wireless Router...

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