Ethereal-users: [Ethereal-users] Sniff wireless on the same machine?

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From: Mike Shepet <mike@xxxxxxxx>
Date: Sun, 31 Aug 2003 14:40:12 -0400 (EDT)
I am not 100% confident that my WLAN is speaking WEP.  My setup is pretty 
simple, a laptop running Windows XP with a D-Link 802.11b card and a 
netgear wireless broadband router.  Both the AP and wireless network 
properties in XP are configured to use encryption.  This afternoon I was 
digging through the Device Manager properties of the wireless NIC and 
found a property under the Advanced tab that read "WEP Option" set to 
disabled.  Curious, I installed Ethereal and started capturing packets 
and found that all of my traffic was in clear text.  I set that property 
to enabled and rebooted, but it's still capturing in clear text.

Is it showing clear text because the packets are being decrypted before 
Ethereal has a chance to read them?  How could you find out for sure if 
WEB is enabled if all you have is an AP and one client?

Mike