How do I "blacklist" a wireless network on my Mac? My home wifi network is password protected, as it should be. My neighbor's is not. Because I have password protected my network, my computer continually joins my neighbors instead of mine. I have moved my network to the top of the list of the "preferred" wireless networks, but if my network is down for whatever reason my computer just re-joins the neighbor's network. I don't want to join my neighbor's network, ever. Is there a way to make it so that my computer will never join a particular network, i.e. "blacklist" it?
Remove it from the list of "Preferred Networks" and it will stop auto-connecting.


Go to "System Preferences" > "Networks" prefpane.
Choose "AirPort" (or "WiFi" on Lion) on the left.
Click the "Advanced" button.
In the resulting sheet, choose the "AirPort" (or "WiFi") tab. (It should be the leftmost.)
Select your neighbor's wifi network in the list and hit the "-" (minus) button.
Live with joy at never [auto-]connecting there again!