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You are here: MacNN Forums > Software - Troubleshooting and Discussion > Mac OS X > Back to My Mac: technical details?

Back to My Mac: technical details?
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kman42
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Join Date: Sep 2000
Location: San Francisco
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Oct 31, 2007, 09:56 AM
 
How does Back to My Mac (BMM) work from a technical standpoint? Is it creating a VPN for all of your registered .mac computers?

It has to have your router set to use NAT Port Forwarding. Say you have File Sharing (port 548) open on your home computer behind an Airport Extreme and want to access it from work. Does BMM set the Airport Extreme to forward any incoming request on port 548 to the home mac? Or does it set a rule to only allow the IP addresses of the other registered .mac computers? Or is it doing something completely different that I don't understand.

I think this is a great feature, although extremely flakey right now, but I would like to have a better understanding of how it works so that I can make some intelligent security decisions about using it.

kman
     
besson3c
Clinically Insane
Join Date: Mar 2001
Location: yes
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Oct 31, 2007, 10:15 AM
 
When people said that BtyM was a way around setting up port forwarding I was highly skeptical, and it looks like I was right to be skeptical.

All BtyM is is dyndns... Since there are many free dyndns services available, this is hardly a feature worth writing home about.
     
   
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