Apple AirPort
- Open "Applications" folder.
- Open the "Utilities" folder within "Applications" menu.
- Click "AirPort Admin Utility".
- Select your base station from the list, then click "Configure".
- Enter your AirPort password.
- Click the "Internet" button.
- Type in Safe From Sites DNS addresses in "DNS servers" fields, then click "Update" button.
Visit http://test.SafeFromSites.com/ to test your new settings.
You should see the Blocked Page from Safe From Sites DNS.