I have found a Cisco document (FAQ-Wireless-Security.pdf) with the following statement:

Q. Why does MAC authentication not work with Wi−Fi Protected Access 
(WPA) in Cisco IOS Software Release 12.3(8)JA2? 
A. The only level of security for MAC authentication is to check the MAC address of the 
client against a list of permitted MAC addresses. This is considered very weak. In earlier 
Cisco IOS Software releases, you could configure MAC authentication and WPA to encrypt 
the information. But because WPA itself has a MAC address that checks, Cisco decided not 
to allow this type of configuration in later Cisco IOS Software releases and decided only to 
improve security features. 

Regards,

John

On 5 Feb 2008, at 20:04, A.L.M.Buxey@lboro.ac.uk wrote:

Hi,

When installing FreeRadius 2.0.1, the only thing you should need is to add
this to /etc/raddb/users

username Cleartext-Password := "thepassword"

..and the clients file (and maybe even the firewall on the server! ;-) )
so that the AP acting as a NAS can talk to FR :-)

...and it should work. If it doesn't, by far the most likely explanation is
that you have the Cisco AP configured incorrectly; you will need to examine
the Cisco documentation, this is not a Cisco support list.

agreed.

alan
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