what operating systems? is this a residential or enterprise network?
http://support.microsoft.com/default.aspx/kb/910387

WEP is not safe, you should use WPA2 or at least WPA

On Sat, 9 Feb 2008 01:00:00 -0800, Jake
wrote:

>We have a wireless lan with an SSID and WEP security set up. We have various
>computers in the house, and while the others connect fine, on one
>workstation, the connection is de-activated after a couple of minutes working.
>The IEEE 802.1x is enabled.
>
>There must be some setting on the workstation as the other workstations work
>fine. But what is it?
--

Barb Bowman
MS-MVP
http://www.microsoft.com/windowsxp/e...ts/bowman.mspx
http://blogs.digitalmediaphile.com/barb/

Hi
Deactivate IEEE 802.1x it is not compatible with your Network.
Make sure that your Wireless Router SSID is On.
Uncheck the power saving of the Wireless Card,
http://www.ezlan.net/example/powersave.jpg
As for security.
From the weakest to the strongest, Wireless security capacity is.
No Security
MAC______(Band Aid if nothing else is available).
WEP64____(Easy, to "Brake" by knowledgeable people).
WEP128___(A little Harder, but "Hackable" too).
WPA-PSK__(Very Hard to Brake ).
WPA-AES__(Not functionally Breakable)
WPA2____ (Not functionally Breakable).
Note 1: WPA-AES the the current entry level rendition of WPA2.
Note 2: If you use WinXP and did not updated it you would have to download
the WPA2 patch from Microsoft.
The documentation of your Wireless devices (Wireless Router, and Wireless
Computer's Card) should state the type of security that is available with
your Wireless hardware.
All devices MUST be set to the same security level using the same pass
phrase.
Therefore the security must be set according what ever is the best possible
of one of the Wireless devices.
I.e. even if most of your system might be capable to be configured to the
max. with WPA2, but one device is only capable to be configured to max . of
WEP, to whole system must be configured to WEP.
If you need more good security and one device (like a Wireless card that can
do WEP only) is holding better security for the whole Network, replace the
device with a better one.
Setting Wireless Security -
Jack (MVP-Networking).



"Jake" wrote in message
news:5C9ED720-7167-4F5B-8C31-25FAC7A1F861@microsoft.com...
> We have a wireless lan with an SSID and WEP security set up. We have
> various
> computers in the house, and while the others connect fine, on one
> workstation, the connection is de-activated after a couple of minutes
> working.
> The IEEE 802.1x is enabled.
>
> There must be some setting on the workstation as the other workstations
> work
> fine. But what is it?