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Hi, I want to connect my desktop and laptop to a LinkSys hub so that I can access my high speed DSL internet on either computer, often simultaneously. However, my laptop says that there is an IP address conflict and subsequently disables the connection. How can I fix this problem -- I can't get another ISP, so I have to share this IP address.

To start with, if you're truly using a HUB and not a Router then that's 90% of the problem right there. A router of some sort is required to share a single internet address among multiple computers. It's fairly easy, and they're not terribly expensive.

The other 10% sounds like it might be configuration issue. I would double check the TCP/IP configuration to ensure that it is set to "automatically receive an IP address".

Article C1988 - June 5, 2004 « »

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Leo Leo A. Notenboom has been playing with computers since he was required to take a programming class in 1976. An 18 year career as a programmer at Microsoft soon followed. After "retiring" in 2001, Leo started Ask Leo! in 2003 as a place for answers to common computer and technical questions. More about Leo.

Not what you needed?

December 14, 2004 7:52 AM

How do I make the internet sharing for windows 2000 Advanced Server Domain to other clients computer on the network by using 4 ports switch. I assigned all the computer with static IP. They all are connecting and i can get access on files, drives on my network, but when I used the server to dial through the ISP using 56K moden I enable the internet sharing on the modem but the client computer doesn't have internet. How could I make this work for everything computer? Do i need to buy Router instead of Switch to be able to do that kind of work?


October 15, 2005 9:25 AM

Hi people
From my point of view i think router is the best. Because it has a fire wall in it and its very easy to configure. You just have to plug your computer's eithernet wire in to the router and you have to use the link which is given in their manual. Like and when configure your router using that link , then you will be able to use internet in to your computer very easily.

December 7, 2005 4:44 PM

Hello everyone,
I am using wireless internet connection in my home but the problem is that someone is already using my internet through wireless and i dont know how can i setup firewall on my connection so that they cant use my internet. i have netgear wireless router MR 814, someone has any idea how can i do that?


December 15, 2005 9:14 PM

You need to enable WEP or WPA on your wireless connection. That means a password or key will be required to be able to use your wireless.

February 25, 2006 8:27 AM

Ok...I have a similar problem....I use a dsl modem to access the internet on my I have a laptop which does not have a internet attached to it...I was thinking of connecting my laptop to the destops's that I do not have to start a new service and pay double the there a way to connect my laptop when I am in the same house with the destop's internet....wireless router?
Please help....

February 25, 2006 9:33 AM

You want this article:

May 30, 2006 2:05 AM

I was wondering how to connect both my computer on the network so that i can access both my computer on the internet. But i heard tht if you switch of one computer there will be no internet connection on the other desktop. So how can we solve t his issue. Where in if computer 1 is off i should have the access to browse the internet on computer 2 and vice wersa. do advice. Im using a cable connection at home. do we need a switch ? and then frm the switch we can connect both the computer and access the internet simuntionesly? do advice please

May 30, 2006 9:01 AM

This article has my recommendations for connecting multiple computers:

June 7, 2006 5:37 AM

hi dudes,
sharing one internet connection b/w r among computers, there is one solution provided u must have a hub.
u just download winproxy and install it on one computer and follow the instructions given by the software.
i think u cannot share internet using p2p.


December 15, 2006 9:00 AM

actually i have av internet connection and my friend also has what i wanna no is that can v both connect our computers via our ip addresses through internet witout using ny oder external device....and if yes den do tell me how can i do so.....

Tricia Scott
February 21, 2007 11:17 PM

It would be helpful if when you meantion checking the TCP/IP configuration, you included instructions.

May 12, 2007 11:33 AM

I had dsl internet, and a router on my two comps. (sharing bandwith), but i switch to Cable Internet, now one of my computers doesnt get internet, is either one of the two, IM Going Crazy because, the company says that they cannot help me because is not their problem, but im paying for a service im not getting, the only choice left is for me two Make the Cable MOdem to Let my two computers conect to the internet through my router, like with my DSL modem.

What do i have to do? tcp/protocol?

June 4, 2007 5:52 PM

should be a little more info on instructions given, so people can understand more easly

August 20, 2007 8:39 AM

nehal:my problem is that IAM USING WINDOWS XP AND i have 2pc's one dsl connection so when itry to connect the ZTE 831 Adsl router and my two pc's together via BayNet 5 port hub USING CABLES they all get disconnected and nothing happens ONLY THE lights of the hub gets blinking thanks.

September 22, 2007 10:47 AM

In my laptop, It says that there's an Ip address conflict with another system in the network? I'm wondering if you could help me fix this problem.
Thanks and looking forward for your reply.

Albert Lei
September 26, 2007 2:45 PM

How to share one internet connect with other computers using windows XP Pro..I NEED HELP OR SOME INFORMATION..


Adhir Dutta
November 19, 2007 7:07 PM

You have to configure the PC's (that have Internet connection only) "C:\WINDOWS\system32\drivers\etc\networks" file so that it will act as a DNS server.

Introuduce the both Ethernets network address in that file.

For example,
Middle Desktop-Pc have 2 Net Cards.


Step1: Now add this two networks( & the Desktop-Pc's "C:\WINDOWS\system32\drivers\etc\networks" file.

Step 2: Desktop-PC side Net card that is connected with your Notebook, go the TCP/IP configuration Properties, use ( as a DNS and gateway address also.From Advanced TCP/IP Settings make this gateway priority 1.

Step 3: Notebook net Card, go the TCP/IP configuration Properties, use ( as a DNS and gateway ( address also.

[email address removed]

February 6, 2008 3:30 AM

I want to connect my desktop to my laptop, through wireless,my laptop is using a nokia 2116 modem to connect to internet and my laptop has built in wireless LAN. How can i connect both computer on one modem.

March 8, 2008 4:10 AM

hi i am satish

i have one internet connection. i have two laptops one with windows 2003 and one with vista how can i connect both laptops using hub

May 9, 2008 4:23 AM

TELL ME IN IP (192.168.......)NOT 172.14......

June 27, 2008 11:08 AM


PLS help me out in this issue,

I have 2 laptops which is vista OS both and i have one DSL modem with 1 static IP . i got a new netgear 8 port swith in which i have connected the DSL modem thru ethernet cable. from that switch i have taken 2 connections but 1 of my laptops says IP CONFLICT . pls help me out in sharing internet in both laptops at the same time

pls dudes its quite urgent

July 1, 2008 2:35 PM

im using an internet connection but i cant connect two computers using the same internet

October 12, 2008 12:49 PM

i got pc connected wireless and got a laptop ,im wanting to connect laptop threw my wireless connection on my pc so i can b online both computers at same time ,can u help?

October 16, 2008 7:36 AM

how can i make my computer as a apache web server!?

Bryan Moore
November 6, 2008 3:33 PM

I'm traveling in my RV. I have an wifi internet conection on my lap top that I would like to share the internet connection with a desk top compute at the same time. Wife works on one computer I work on the other. How do I accomplish this.

The simplest is with an ethernet cross-over cable connected between the two machines, and turning on "Internet Connection Sharing" on the laptop.
- Leo

December 24, 2008 9:39 PM

I want to know how to access my computer data(delhi) with other computer(bombai) via internet connection.

Sounds like a job for Hamachi.
- Leo

June 1, 2009 8:09 AM

hey i have verizon wireless internet and i would like to use my laptop and my pc at the same time is this possible by using a cable to connect the both of them to the same modem? If so what are the steps that i need to take. kindof make a home network using one modem?

arjun ratheesh
September 7, 2009 11:41 AM

I want to connect my desktop to my laptop(vista),my laptop has built in wireless LAN. How can i connect both computer on one modem.

September 19, 2009 10:56 AM

I have two desktop pc, in which one is connected with brodband. i want to use brodband from second pc also, then how to connect both pc for above

January 25, 2011 8:08 AM

the answer is to ask your internet service provider to give separate ip addresses to each computer.then you can connect both onto the internet at the same time.after you connect it will show a seperate connection other then local area connection.that is your internet.the problem is your isp gives both computers the same ip address so two computers cant access the same ip address at the same time.if you do this you can connect two computers onto the internet at the same time using a modem with two ports.if you want this in English email me at {removed} and ill show you with pictures.

March 26, 2011 5:38 AM

I had reliance dsl internet connection, and i install a router to it for use net connection in two system,but net is coming alternate, if net is coming in 1st pc so its not coming secong pc, if it coming in 2nd pc its not coming 1st pc.

Offhand I'd say that the router isn't properly connected or configured.

September 7, 2011 11:35 AM

are the routers that comcast retns to you as good a quality as one you might purchase? I want to keep my desktop running as well as using a laptop and I pay for the modem anyway. They will offer me a free router since I have the modem renting from them anyway. Is the one they offer as good a quality as it shuld be or would you recommend buying your own? LIke I said, I rent the modem so there is no extra charge for the router? My friend has a router from comcast and says it doesnt always have a connection and my daughter had one from Direcct TV and she always had a connection problem. Why would this be? Thank you very much for your help.

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