how-to freeradius + aes

[A.L.M.Buxey at lboro.ac.uk]

Hi,
> I was thinking that freeradius provide the wap2 encryption. I have a pci
> card with atheros chipset working in AP mode. But i still have a question, I
> made a simple configuration with freeradius that worked with radtest, but
> how can I block the access to the wireless lan for users who does not have a
> username?

FreeRADIUS is a RADIUS server. it doesnt 'provide' encryption. 
an 802.1X supplicant does that. 

how to block access?  simply return an Access Deny to any user
who attempts connection with incorrect/null name/password

alan