How can I control/observe my parents' iMac screen remotely from my own Mac when I'm at home? They made the switch and now I'd like to be able to share their screen to remotely help them figure out, fix and set up things as they need it. There's Back to My Mac, but as I understand it, this is for when both computers are my own and I sign into iCloud on both machines. It looks like I can use Messages, but I'm not clear on what kind of chat account I need? I'm aware of Skype, LogMeIn, etc., but can I do this without additional software? The Sharing panel in System Preferences? Any thoughts? Thanks in advance. Both iMacs are running Mountain Lion.
How do I get my iMac to wake on demand when it's asleep and asked to do so? These instructions from Apple are pretty straightforward on how to set it up for Bonjour, but I can't get it to work when it receives a request from Apple TV to wake up. It's an iMac running Lion with a Time Capsule set up as the Base Station. The iMac supports Wake on Demand over Wi-Fi and ethernet (it's connected over Wi-Fi). Time Capsule and Lion have the latest updates. I've found recommendations on Google but nothing has worked. Any troubleshooting pointers? (Bonus question: how can I get it to wake up from outside my network?) Thanks.