mac address filtering implementation

[Andrea]

hi all, this is my first message in ml.

I'm trying to implement a wireless access point using me2000 (busybox 
based) over a Wrap routerboard.

A thing I'm not able to implement is a MAC address filtering feature 
like some access point (DLink, for example)does.

I've tried to use ipfilter mac address filtering (using something like 
described here: 
http://www.cyberciti.biz/tips/iptables-mac-address-filtering.html ), but 
  I'm not satisfied of the result: traffic is not permitted, but the 
client is connected to the wireless network.

How do ordinary routers implement mac address filtering?


P.S. I know the issue of mac address filtering insecurity

Thanks, Andrea