If you are concerned that someone is leeching your bandwidth you can definitively lock down your wireless router so that only your Mac can access it. Each wireless device (including your Airport Extreme card) has a unique MAC (=Media Access Card) code which is practically impossible to spoof (unless of course you're the NSA).
If you use an Apple base station, go into AirPort Admin Utility and click on Access Control. Click on the plus at the right hand side and then on "This Computer" in the dialogue box. You will see a description (the name of your Mac) and AirPort ID (6, 2 digit hexidecimal numbers) - this is your MAC code and unique to you. Click OK and then update at the bottom right hand side of the pane. Your base station will now update its settings.
From now on, no other wireless device except your Mac can access your base station as the router will only accept your MAC code.
|