Hello, I own a cisco 1811 router. There's is no wi-fi built-in feature on the router and I do not use wi-fi in my network. I would like ton configure the router with a "mac filter" for all ethernet connection, like linksys router do to permit wi-fi connection. I would like to deny all, and permit specific client using their mac, there's no problems for me to allow each switch in the network + clients. I think I can accomplish this using the NAC fonction of the router but I have to use a RADUIS server but I would like to avoid that. There's only 12 clients in the network. Thanks for helping.