[Gllug] WEP security experiences

Juergen.Schinker ba1020 at homie.homelinux.net
Tue Jun 19 09:47:27 UTC 2007

Dylan schrieb:
> Hello List
> Well, I was asked recently how secure a friend's network was so I set about 
> learning to use kismet and aircrack just to find out ...
> I broke his WEP key in 11 seconds - the only thing was, I needed to harvest 
> over 2 million packets with varying contents to do so. I set up a network 
> with three wireless machines + AP and set off various file transfers up to 
> the saturation point (managed to get over 50Mb/s throughput which I thought 
> was quite good) and after nearly an hour and a half I had gathered enough 
> packets on a separate machine to crack the encryption. I tried several 
> times - increasing the amount of bandwidth used and the number of packets 
> captured as I went and 2 million seems to be a cut off point for 128bit wep. 
> I also found that if there was only one wifi attached device, even 2 million 
> packets was not enough to crack the key.
> So - is it reasonable to think that your average criminal is going to go to 
> that effort - waiting for two million packets to fly thru the ether (bearing 
> in mind that I've tried just collecting packets from neighbours (for purely 
> research purposes, of course) and can't even get a hundred thousand per hour 
> even when I know they are heavy web users.

well this tools are ment to crack your neighbours WEP -key
so you got plenty of time..

<james bond mode on>
the secret service sits in a van near your house
<james bond mode off>
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