Thoughtful, detailed coverage of the Mac, iPhone, and iPad, plus the best-selling Take Control ebooks.



Pick an apple! 
Smarter Parental Controls

If you've been using the parental controls options in Mac OS X to lock your child out of using a particular computer late at night, but would like to employ a more clever technique to limit Internet access, turn to MAC address filtering on an Apple base station.

To do this, launch AirPort Utility, select your base station, and click Manual Setup. In the Access Control view, choose Time Access to turn on MAC filtering. You'll need to enter the MAC address of the particular computer, which (in 10.5 Leopard and 10.6 Snow Leopard) you can find in the Network System Preferences pane: click AirPort in the adapter list, and click Advanced. The AirPort ID is the MAC address.


Auto Power Conflict

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Auto Power Conflict -- Pete Resnick <> writes:

I thought I'd pass along this warning: Auto Power On/Off is violently incompatible with my MacTCP-based Network Time control panel, which synchronizes the Macintosh clock with a network time server on the Internet. The problem is due to a severe violation of the Apple specs by the Auto Power On/Off control panel. Auto Power On/Off puts in a patch to the system "SetDateTime" routine, which Network Time uses. Unfortunately, this patch calls the system PPCToolBox routines synchronously, which basically means that SetDateTime is not safe to be called from interrupt, as it is documented to be. Since Network Time does almost all of its work at interrupt time, to insure that the time being set is exact, the Auto Power On/Off patch will always hang the Mac dead. Apple has been notified of this problem and is working on a response. In the meantime, don't mix this broken piece of software with Network Time. other/network-time-201.hqx


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