Sharing an ADSL connection

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Hi, I have a lan with two computers and an adsl modem.
The modem is connected through a second lan adapter on one of the computers.
(I read that this was the best way to do it – even though i have been able to share it through a hub)
On the computer with the two lan adapters there are three networks listed in “network and dial up connections”.
1. NTS Enternet P.P.P.o.E Adapter
2. The lan adapter for the modem
3. The lan adapter for the LAN
Have you any idea which one out of 1 & 2 I should share?

I am getting a problem when i try to share the PPP one, when i click ok after checking the “share with other connections” box, the properties dialogue box freezes (Not Responding). This seems to make the LAN drop out, giving the message:

An error occured while reconnecting to G:…
Microsoft Windows Network: The local device name is already in use.
This connection has not been restored.

The network will work again a few minutes after turning off the internet sharing.
Also, When i look at the net sharing tab, there is no network specified to share with (probably a result of the freeze.)

Any suggestions? If there’s external software which simplifies the proccess id be interested.

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Let me try to be clear on what you’ve got set up, and what the end result is. You have:

1. An incoming ADSL line, whose output (the ADSL modem) is connected to a network card on a PC.
2. On the same PC, you have a second NIC installed, and this NIC is to facilitate communication with a second PC.

If this is correct, two network adapters in system “A” and one network adapter in system “B”, then I have a few more questions.

How are the two computers connected to each other? Via CAT-5 or higher cable? If so, is the cable “cross” wired?
What exactly are you sharing – the network adapter in your network connections folder?

In order to make this work without a DSL router or hub in place, you will need to enable routing and remote access services on the workstation with two network cards. You would then have to configure the IP addressing scheme so that each computer could share the data connection. Correct me if I’m wrong about what I think you have set up here!

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Yeah, you are pretty right, I omitted a few details.
There is a switch in the mix as well. (sorry i might not be using the correct terminology to describe the situation)
Ive just drawn up a diagram in an effort to clarify what the situation is.

“An incoming ADSL line, whose output (the ADSL modem) is connected to a network card on a PC.” Yes

“On the same PC, you have a second NIC installed, and this NIC is to facilitate communication with a second PC.” Yes.
“If this is correct, two network adapters in system “A” and one network adapter in system “B”, ” Yes

The computers are connected to a switch (cat 5 yes). The network works as far as file sharing etc goes and they are both visible on the workgroup.
The internet connection fully works on the computer it is connected to.

I can get it to the same working level with both computers and the ASDL modem going through the switch (ie one adapter in each computer)
But i cant successfully share the Adsl connection either way.

One thing im not sure about is how 3 connections show up on computer A. there are 2 for the asdl modem (aswell as one for the other computer), and i dont know which one should be shared (using the ics tab). Neither seems to work.
With the settings shown in the picture I have been able to turn on sharing without the dialoge box freezing and without the “filesharing/workgroup or whatever” dropping out. But still the second computer doesnt get the ASDL.
I am quite sure the second computer is set up fine.

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I can’t for the life of me understand why the modem isnt connected directly into the switch and the second NIC and ICS removed altogether. They only complicate the issue and simple is good don’t you think?

I have 2 computers, a switch and ADSL into the switch. Works a charm!!

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Thanks for your help… due to time consraints i bit the bullet and bought a router.
It works like a charm too. As i hoped it would, for 325 clams. Since it all worked first go, i thought id try my luck and plug in the mac we have here and whala, it worked instantly as well!
I will print your advice though incase it comes up in the future.

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Wow! Sounds to me like somebody saw you coming!

http://www.buy.com/retail/computers/category.asp?loc=413%5B/url%5D

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Or that the price was in AUD, would be a more broadminded assumption

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Ah so, as someone once said! I had checked your profile to see what part of “The World” you’re in and it don’t say. You used an expression (clams) that I thought was pretty localized. Anyways, no offense was intended and I hope you didn’t take any. Hope you like “routing!”

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Another question the “routing and remote access ” tools you spoke of only seem to be on the 2000 server cd. i have 2000 pro.
Any ideas?

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Ah, yes, you’re correct – the service itself is only on Server. Sorry about that. However, 2000 Pro does support routing, but you’ll have to edit the registry to enable it. After enabling it you will need to configure your IP addresses correctly on both machines.

To enable IP routing, do the following on the machine that has two network cards in it:

1. Click on Start, then click Run.
2. Type regedit.exe, and then click OK.
3. Drill down to HKEY_LOCAL_MACHINE SYSTEMCurrentControlSetServicesTcpip Parameters
4. Select or create the key IPEnableRouter
5. Set the value to “1” to enable routing for all network traffic.

There is an extensive yet somewhat technical explanation at http://www.microsoft.com/windows2000/techi…bd_trb_vcxf.asp%5B/url%5D which you may want to look at. On PC #2, you need to set up the Gateway in your IP configuration to be the IP address of the NIC that is not attached to the DSL line. Keep all the subnet addresses the same, usually you would choose 255.255.255.0.

Hope that gets you on the road….if not, post back!

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I think that the one you need to share is your number 1.

How does Computer 2 get its IP address. If you enable Internet Connection Sharing on Computer 1 then you will need to set up the IP on Computer 2 to use DHCP to get an address, gateway etc. If you have set everything up to default values then it is probably set up correctly already, but since there wasn’t a DHCP server both computers will be using addresses starting 169.

After enabling ICS you may need to reboot computer 2 (or issue the following DOS commands) to get it to pick up its new address
IPCONFIG / RELEASE
IPCONFIG /RENEW

StuartR

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