I only had my Mac Pro for 3 month and still figuring somethign out. I just bought today a D-Link DGL 4500 router and it has an option called "MAC Address Filter". This only works if I'm using my mac wirelessly correct? Like if im on a Mac Book on a wireless netwrok? If my Mac Pro is directly connected to the router do i still need to enable this? If any can help me underestand what it does be greatly appreciated thx.