Peer-to-peer AirPlay

A major feature in iOS 8 and Yosemite is the ability to connect to an Apple TV whilst not being on the same wireless network. The underlying technology for this is peer-to-peer AirPlay. Peer-to-peer AirPlay adds some great improvements to the old style AirPlay, if both the Apple TV and iOS or Mac support peer-to-peer they will connect this way even if they are both on the same wireless network. This removes the strain of video streaming from networks, and also improves the reliability of AirPlay streaming. Peer-to-peer AirPlay needs no configuration.

Peer-to-peer AirPlay requires the following:

  • Apple TV 3rd Gen (Rev A) – Model Number A1469
  • Mac from 2012 or later, running OS X Yosemite. Some unsupported models can be enabled by using the Continuity Activator.
  • iOS Device from 2012 or later, running iOS 8

Apple also recommends not using the 149 or 153 5Ghz wireless channels on your infrastructure wireless networks, not using these channels will eliminate any interference between the Apple TVs network and your wireless network.

Further information can be found in this great reference page from Apple.

Posted by Haydn Cockayne in Apple, iOS, OS X, 0 comments

Frozen Progress Bar After Yosemite Installation

During the Yosemite Installation users are prompted to turn on FileVault, this has been causing some issues with some of our Macs. After the installation is complete the user is asked to login to unlock the drive, after they have correctly inputted their password the Mac will begin to boot and display the progress bar, unfortunately on some Macs no matter how long you leave it to boot, the progress bar will not progress further than 50%.

Screen Shot 2014-10-22 at 10.04.44 AM

The easiest way to bring the Mac back to life is to reboot into Recovery Mode (using Command + R), open Disk Utility and from the File menu select Turn Off Encryption. For whatever reason while in Recovery Mode the disk will not start the decryption progress, now reboot the Mac into Target Disk Mode (hold down T when booting) and using either a Firewire or Thunderbolt cable, plug it into another Mac.

When plugging the dead Mac into the other you may be prompted for a password to Unlock the disk, use the users local password for this step. You can now check on the progress of the decryption from terminal by running the diskUtil cs list command. Once the Mac is fully decrypted you will now be able to unplug it and it should boot successfully.

Posted by Haydn Cockayne in Apple, OS X, 0 comments

802.1X Login Window Authentication with Mountain Lion

Since Lion the procedure for using 802.1X has changed, in this guide I will explain how to set this up using a Windows Server 2012 Domain Controller, the Casper Suite and a Mountain Lion Client.

This guide assumes you already have a functioning domain controller, Macs bound to this AD and 802.1X authenticated wireless network. In this guide I will be using the Casper Suite, but since OS X Profiles are pretty much the same no matter how you distribute them, most steps will be the same not matter what management suite you use.

Continue reading →

Posted by Haydn Cockayne in Apple, Networking, OS X, 0 comments

Parental Controls and Proxy Servers

Haven’t posted in a while so I thought I’d share a fix I found for Parental Controls and proxy servers.

There appears to be an issue in both Lion and Mountain Lion with Parental Controls and proxy servers, when a user has Parental Controls enabled and they try to access the Internet through a proxy server a blank page is returned, attempting to connect through cURL returns a “empty reply from server” error. Continue reading →

Posted by Haydn Cockayne in Apple, Networking, OS X, 0 comments