RE: detecting promiscuous 802.11x cards...

Whenever I put a prism card into promiscuous mode in Windows, it does
not allow me to use the interface.

 

> -----Original Message-----
> From: [email protected] 
> [mailto:[email protected]] On Behalf Of Jim Thompson
> Sent: Thursday, January 13, 2005 2:36 PM
> To: SeattleWireless Talk List
> Subject: Re: detecting promiscuous 802.11x cards...
> 
> David Huseby wrote:
> > Is it possible to detect 802.11x cards in promiscuous mode? 
>  In theory 
> > the answer is "no" because the cards would just be 
> "listening" to all 
> > packets on a channel.  But in reality, do any of the cards change 
> > behavior in a detectable way when in promiscuous mode?  I was just 
> > curious because I seem to recall that there is a way to 
> detect 10/100 
> > ethernet nics in promiscuous mode on a LAN.
> 
> You send the NIC an intentionally malformed ARP request.  If 
> it responds, the target IP address has the NIC in 'promiscuous' mode.
> 
> I don't see any reason off-hand this wouldn't work against 
> 802.11 NICs.
> 
> jim
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