How to restart your Mac remotely

Reader G. Murray desires to restart his Mac at instances whilst it’s no longer within arm’s reach—or even with strolling legs’ attain. He’s questioning what options are to be had with cutting-edge Macs. His Mac is positioned on a community created via a Time Machine, so it has a privately assigned IP deal with using NAT (Network Address Translation).

Two forms of options apply right here: for whilst the Mac is still ticking away but isn’t doing what you need, so that you want to restart it if handiest you can connect remotely to it; or whilst the Mac is unreachable and ostensibly crashed or experiencing other troubles, and you need to electricity cycle it.

Remotely hook up with a running Mac

Screen sharing and far off terminal get entry to can each allow you to control a Mac remotely but reaching that Mac over the Internet is often the fly in the ointment.

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While macOS includes Back to My Mac, which pairs with iCloud to permit far off get entry to a Mac through the Screen Sharing app, it simplest works in its regular configuration from every other Mac signed into the same iCloud account. Apple offers no visitor get right of entry to from different Macs—even though you may set up an account on every other Mac briefly—nor does it have an iOS app.

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Instead of Back to My Mac and the Screen Sharing app, you can use the regularly occurring screen-sharing protocol VNC. (Just to be greater puzzling, Apple’s Screen Sharing app is based on VNC, but no longer equal.) VNC can paintings over Back to My Mac, but doesn’t continually, because it’s now not a supported characteristic. Third-celebration macOS and iOS apps will let you access any VNC-capable gadget.

Enable display sharing in the Sharing gadget choice pane, and click on the Computer Settings buttons to show on VNC. Warning! Always set a robust password for VNC, because it’s clean for attackers to experiment for VNC and discover yours if it’s handy from the Internet.

Back to My Mac fails with “double NAT” conditions, which I regrettably have and which aren’t totally rare. A double NAT happens usually while an ISP gives a modem that also acts as a router, and which has features you couldn’t reflect or flip off. If you connect, say, an AirPort Extreme with DHCP and NAT enabled to a LAN port on the ISP’s modem, you’re developing an NAT-interior a NAT. All outbound connections work pleasant, however, inbound ones can be a mess. (In my case, the furnished model has a few difficult to understand networking features used by CenturyLink’s fiber-optic network.)

Instead of counting on macOS, you could flip to third-party remote get right of entry to software, even though my favorites have dwindled away and left active improvement, while ones that used to have loose or lower priced flavors have gone commercial and expensive.

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TeamViewer remains the exception, being nonetheless continuously evolved and unfastened for private, non-commercial use. It can punch thru a double NAT, and it’s my desired tool as though works on practically every platform, consisting of macOS and iOS. The agency prices a pretty hefty fee if you’re using it for commercial enterprise functions, starting at $850 for a perpetual license for remotely gaining access to up to a few gadgets. For enterprise customers without large budgets, I advise LogMeIn, that is $250 a yr for two devices.

Chris Breen’s 2012 directions on the use of SSH to reboot or shutdown a Mac through a Terminal consultation continue to be accurate, so I refer you there. But growing a far-flung Terminal session via SSH, a secure protocol that’s sincere over the Internet, calls for putting in place port mapping on a router or Wi-Fi base station the usage of DHCP reservation (so your Mac has the identical private IP address all of the time) and NAT port forwarding (so an Internet-accessible network cubbyhole maps to the Mac you want it to).

Unfortunately, Apple not offers a detailed manual to AirPort configuration because it did years in the past. I’m reluctant to toot my very own horn, but in case you actually need to set up this form of far-flung get admission to for SSH or different services, you’ll discover whole instructions on this topic in my E-book, Take Control of Your Apple Wi-Fi Network.



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