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Networking with Motorola SBG 900 Gateway

Hi I have a Motorola SBG 900 Gateway in my Bigpond wifi cable connection. I have six computers to connect. Do I need a router to do this? Originally I had only 3 computers: two desktops and a laptop, but now I have 3 desktops and 3 laptops. I can generate the WEP number for the the four computers. And the computer attached to the ethernet connection seems to disable the rest of the computers. Do you think the router with 6 ethernet slots will help, and do away with the network cards (wireless and PC based, and USB wireless adaptor)? Someone suggested a router, but I dont want to spend unnecessarily. I'd appreciate your help.

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Re: Networking with Motorola SBG 900 Gateway

With my knowledge in theory of networking I have never heard of that inless there is something else working at 2.4Ghz on the computer that is disabling the wireless inless it is a hub or a dumb device that requires little or no power. I recommend linksys vs cisco. contact me at for advice from someone studying mcse and ccnp

Posted on Apr 07, 2009

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Re: Networking with Motorola SBG 900 Gateway

No, you don't need a router... that gateway supports up to 253 devices on your private network segment. That being said, you only have one ethernet port, so if your desktops have LAN cards rather than wireless, you'll need a hub to split off enough ports. If you add a router, it'll give you a whole new level of complexity. A gateway is a router/modem combo. It converts the Cable Internet signal from your ISP to ethernet and isolates all of the computers behind it into your own private network. A hub is basically an ethernet splitter... it won't isolate a new network segment, it'll just add more ports. Get a hub, they are cheaper and won't add a new level of complexity.

Posted on Sep 09, 2007

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I want to password protect my sbg 1000 . i have never do it before but i have more stuff running thru now

You want to secure the wireless network.
Is there any computer connected to the router with the Ethernet cable?
If not then you will need to connect the computer to the router with the cable.
Check the IP address on the computer. Open the router set up page.
Once you open the set up page, you will find the option to make it secured

Click Here
for step by step instructions

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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

My Motorola SBG 900 will not access the current time

Your isp may not use the TOD (time of day) in the activation file they send your modem. What is the importance of your modem having the current time?

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1 Answer

My laptop is asking for the security key in order to connect to the wireless network. I am sitting right in front of the router, but I do not know which numbers/letters it is wanting

The SBG 1000 only supports wired equivalent protection (WEP) encryption. Did you set up the router yourself or your ISP. If the ISP set it up they will have the WEP key, if you set it up and don't remember, you can either log into your router and find the WEP key, or reset it to the factory defaults via the reset button on the back of the router

Jun 18, 2009 | Arris SBG1000 Wireless Cable Modem Gateway...

1 Answer

Cant lock my signal was trying to find a alternative way because i lost the disk??? i have a SBG 900 and any one can get on my internet signal

There's another option to configure the security or encryption using your SBG 900

Connect your computer to one of the LAN ports
Access the configuration of the modem (example
The if you got the configuration page open find the wireless settings and configure the WPA or WEP security using your modem.

Mar 08, 2009 | Arris SURFboard SBG900 Wireless Router...

2 Answers

Can I use my router just as a Wireless router with a DSL .

i doubt it will work. most times the cable companies give you a modem/router all in one box. the problem is there in no inbound connection to recieve an internet signal other than the cable cord connection. with the dsl modem you will need a seperate router. they cost around $40-50 on avg

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Second PC

You can't use a T connector for a network (to my knowledge there is no such thing for an ethernet cable). All computers must connect directly to the router, whether they connect wirelessly or not.

Your other option is you can purchase a network hub/switch, e.g. one of these:

You plug this it into your router. Then you can plug usually up to four computer into it, and they'll all be on the network.

Feb 03, 2008 | Arris SURFboard SBG900 Wireless Router...

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Motorola SBG1000 No Power

My SBG1000, had the same issue. I had removed the cover and saw that the solder failed at the main power supply, simply re-soldered and it resolved. I think that a weak solder joint had plagued these units.

Jan 24, 2008 | Arris SBG1000 Wireless Cable Modem Gateway...

2 Answers

Need Firewall

For what reasons do you want to install a firewall on the wireless network? There may be valid one's I just need to understand what you want to achieve.

Here is another option to complete a different task that traditional firewalling will not stop.

If it is to secure the network from use by others outside those intended then there are other means that should be considered. The SBG900 supports WEP encryption -- where a password (or passphrase) is entered into the router and into each wireless adapter (assuming the wireless adapters also support WEP) of machines to connect to the router keeping those machines without the password off the network.

Jan 03, 2008 | Arris SURFboard SBG900 Wireless Router...

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