Somehow connected to my work computer....how?

[Bucharoo1]

Was looking to share a screen to with an iMac in another room in my home.
In Finder>Go>Connect to Server...Browse.
An older iMac of mine which is 25 miles from here on a completely separate network appears in the browse window. I click on it, log on, click screen sharing and ...voila. I am operating the remote machine as if it were next door. No VPNs or special preparations.. Is this normal? I share 2 or 3 computers on my home network, but never attempted to share with work computer.
Can someone explain how this occurred? I know there's a firewall, etc. at the workplace. Can anyone access it?
YIKES!!!

 

[robbieduncan]

Back To My Mac? Is your work computer logged into your Mobile Me account?

 

[Bucharoo1]

probably

 

[octatonic]

I had something similar happen tonight with a computer I sold 2 years ago suddenly popping up in my network list.

https://forums.macrumors.com/threads/1106229/

I think Apple are messing with Mobile Me.

 

[Bucharoo1]

Astonishingly simple. Never thought about it, just had the settings left from when the work computer was at home. Had no idea it could use the Internet so cavalierly. So much for the IT depts firewall, eh!

 

[octatonic]

Fwiw the other computer definitely wasn't using my mobile me login.
No idea how it happened.

 

[Bucharoo1]

As I looked up at the policeman at the entrance to Zabriskie Point, I grimaced into the raging sun and said, "How long does it take to be here?"