Question : Require authentication for network access ASA.

Hello Experts,

I have an internal network of about 25 computers behind an ASA 5505.  The ASA assigns DHCP to whatever connects to the network via LAN or Wireless.  I would like to restrict network access to authenticated users.  Ideally, I would like to provide a list of authenticated MAC addresses and require username and password for for any device not on the list.  My question is:  Is this possible with the ASA, and can anyone point me in the right direction to get started?  Thank you in advance for your time.

Answer : Require authentication for network access ASA.

this is a cut-through proxy configuration guide with mac list exemption http://www.cisco.com/warp/public/480/tacacs-radius-config.pdf