Re: Problem with Network

From: Chuck (none_at_example.net)
Date: 09/22/04 

Date: 22 Sep 2004 16:15:06 -0500

On Wed, 22 Sep 2004 20:40:28 GMT, "Neil Ginsberg" <nrg@nrgconsult.com> wrote:

<SNIP>

>Looking at the Wireless Connection Status for the wireless computer, I see
>an IP of 192.169.2.2, with a subnet mask of 255.255.255.0, and a default
>gateway of 192.168.2.1 -- which is what they've always been.
>
>On the wired computer, I see 192.168.2.3, 255.255.255.0, and 192.168.2.1 --
>which, again, is what they've always been on that computer.
>
>So if Wireless Connection Status and Local Area Connection Status dialog
>boxes are any indication, the PCs seem to be getting IPs.
>
>>
>> Is this the wireless computer reporting this problem?
>> http://www.microsoft.com/technet/community/columns/cableguy/cg0804.mspx
>
>Both computers are reporting the same problem. I upgraded to SP2 several
>weeks ago and didn't have a problem. This started all of a sudden yesterday.

Any idea what you were doing yesterday to trigger this?

>Note that the "limited or no connectivity" problem only happened when I
>connected the two PCs directly, peer-to-peer. When I have them connected
>through the router (as is the case with the IPs I noted above), I don't ge
>that error, but the dialog box says, "Windows did not detect problems with
>this connection."

You have dialup (PPPoE?) on D23.

Are you using the router to share the dialup service? Or are you sharing the
service with ICS, and using the router to just connect the two computers? If
you're using ICS, have you disabled the router functionality?

To use a router as a hub, with an ICS server, you have to:
1) Disable DHCP on the router.
2) Connect the ICS server (D23), and all ICS clients (D51 etc), as peers to the
LAN side of the router.
3) Change the LAN address of the router from 192.168.0.1 to something like
192.168.0.99 (gotta keep it on 192.168.0/24 subnet).
4) Setup the LAN interface on the ICS server as 192.168.0.1.
5) Setup any ICS clients to use DHCP for all settings (obtain IP address and
DNS servers automatically).
6) If you're going to do file sharing, either disable ICF on the ICS LAN
connection (not recommended for a wireless router), or enable the FPS exception
in WF. Or disable WF, and configure NPF properly.

>> Have you enabled the File and Printer Sharing exception in Windows
>> Firewall on
>> both computers?
>
>I believe I disabled the Windows Firewall altogether (am using Norton
>Firewall). So unless the SP2 upgrade turned it back on, it should be off
>completely. However, I can't even get into the firewall to check. When I go
>to Control Panel, I can't get into anything. Double-clicking on an item in
>Control Panel causes the hourglass to come up for a split second; then it
>disappears, and that's it. So I can't check it. That's on the wired
>(desktop) computer.
>
>On the wireless (laptop) computer, I am able to get into Control Panel
>items, and, indeed, the Windows Firewall was on. I turned it off. But I
>still can't get into the computer from the other one.

Yuck. Norton Personal Firewall is know for NOT reacting well to being disabled.
The only solution here is to either un install NPF (using religiously all
instructions from Symantec), or enable it and configure it properly.

That is #1 on my list of causes of your problem.

<SNIP>

Cheers,
Chuck
Paranoia comes from experience - and is not necessarily a bad thing.

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