MAC security (Re: Question about Wireless)

Felipe Figueiredo philsf79 at
Tue Nov 27 15:13:19 UTC 2007

Em Tuesday 27 November 2007 12:45:26 Nils Kassube escreveu:

> MAC filtering means that the AP only talks to a known set of MAC 
> addresses. It isn't secure because you can set some (maybe all?) wireless 
> cards to arbitrary MAC addresses - but there are problems doing it. 1) It 
> may be illegal. 2) If the real owner of that MAC address is active there 
> will be lots of collisions and possibly both clients can't do anything 
> usefull. 

Interesting. I assume one would have to know beforehand of a permitted MAC in 
order to use this attack vector. 

Just out of curiosity, is there any known way (not brute force) to discover 
such permitted MAC addresses that script kids can exploit?

> Anyway, if you want to have a rather secure wireless network,  
> use WPA/WPA2.

I already do, thanks.


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