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.



Related Articles



Protect Yourself From the Safari RSS Vulnerability

Send Article to a Friend

Programmer Brian Mastenbrook revealed on 11-Jan-09 that he has discovered a security vulnerability that could allow a malicious Web site you visit using Safari to read any file on your system. The flaw affects the latest versions of Safari when used in Mac OS X 10.5 Leopard or Windows, though not in earlier versions of Mac OS X. Mastenbrook wrote that he has reported the details to Apple.

The vulnerability apparently could reveal the contents of any file, which includes email messages, passwords stored in browser cookies, or other documents. We have strong indications that the problem is real and you should immediately protect yourself in case malicious attackers figure out the vulnerability's full details before Apple issues a patch.

The vulnerability lies in the Safari RSS reader, and according to Mastenbrook, you may be affected even if you don't use the reader, as long as Safari is set to be your default RSS reader, which it is unless you've changed the setting. This likely indicates that the problem relates to how Safari handles RSS subscription links or feeds, since browsing to those triggers Safari's RSS reader.

The good news is that it's relatively easy to protect yourself. If you are on Windows, just stop using Safari until a fix is released. If you are using Mac OS X 10.5 Leopard, follow the updated instructions on Mastenbrook's Web site, linked above. Simply changing the default RSS reader application in Safari does not provide full protection, unfortunately.

It's always a relief when there is a reasonable workaround to a potentially serious security vulnerability, and we won't be surprised if Apple patches this vulnerability fairly quickly.


Make friends and influence people by sponsoring TidBITS!
Put your company and products in front of tens of thousands of
savvy, committed Apple users who actually buy stuff.
More information: <>