RE: [MLUG - DISCUSSION] Crack'n WEP

["Spurling, Shannon" <EMAIL:PROTECTED>]

A Faraday cage would be the best solution. Grounded wire mesh,
electrically connected and completely surrounding you. The holes only
have to be smaller than... 1/2 your wave length I think, or something
like that. That's why microwave ovens have a wire mesh in the window.
Ever see Enemy of the State? Gene Hackman's character worked in one. 



Shannon Spurling
WAN Engineer -Specialist

MOREnet, Network Services, Core Network
3212 LeMone Industrial Blvd.
Columbia, MO 65201

Main:(573) 884-7200   Fax:(573)884-6673

EMAIL:PROTECTED
EMAIL:PROTECTED


-----Original Message-----
From: EMAIL:PROTECTED
[mailto:EMAIL:PROTECTED] On Behalf Of Jason
Youngquist
Sent: Tuesday, April 05, 2005 4:22 PM
To: MLUG Off-Topic Discussion
Subject: Re: [MLUG - DISCUSSION] Crack'n WEP

> I don't want to start a fight about it - but to clarify:  Wireless
signals 
> are physically limited in that they don't travel all that far.  For us
on the 
> 4th floor of a building, I'm not sure they can see our network out
side the 
> building at ground level.  This does limit somewhat who can access
your 
> network.
 	The wireless signals may not travel that far, but with a high 
power antenna someone could pick up those weak wireless signals.

So for example, "average user" with a "Joe Blow" (TM) wireless card in
his 
laptop couldn't pick up your wireless network, but "mr. haxor" with his 
"super-duper-WEP-key-crackin-laptop with a 400millamp leet wireless card

with gazillion db gain directional antenna" can pick up your wireless 
network from his dorm room window.

So thus, you are partly correct that wireless signals are physically 
limited, but even the weak signals that escape can be picked up if you 
have a powerful enough "detector".

The ideal solution would be a room with lead walls (or something like 
that) so the wireless signal is contained just to that specific room,
but 
then you have to look at practicality.

--Jason



> I'm not trying to say that this makes it secure.  I don't know squat!
>
> Mike
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