Orinoco MAC address filtering

Dominick, David David.Dominick at delta.com
Fri Aug 24 05:51:44 EST 2001

if you are using orinoco access points with a radius server, it does add a
little bit because the software addressable MAC will be ignored. Orinoco
cards have 2 MAC addresses, the hardware one, and the software addressable.
You can change the hardware one, but it is not as easy and does add a little
(though MACs are always sent in clear text, so sniffing a valid one is very

-----Original Message-----
From: Jaakko Isomursu [mailto:jaakko.isomursu at kolumbus.fi]
Sent: Thursday, August 23, 2001 1:02 PM
To: Samba/Wavelan mailing list
Subject: Re: Orinoco MAC address filtering

> > Is there any known way to bypass Orinoco's MAC address filtering for
> > by duplicating WLAN-cards MAC address?
> Yes, sniff network, collect MAC addresses, set in the driver.

The problem was, I didn't know that changing the MAC address was that easy
in linux..

> > When WEP is allmost useless, would this provide some security?
> If you want security :

Yes.. I'm plannng to use VPN, but I was wondering if this MAC address
filtering is worth the trouble. Apparently not.

Jaakko Isomursu
jaakko.isomursu at kolumbus.fi

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