No they do not. On the router (if they are home users), you need only forward port 5900 to the client! 😀
Then you may use their external ip to access their computer through screen sharing, but setup this way, you must use another mac to control the client. If you wish to enable normal vnc access, under screen sharing, there is a Computer Settings… button. You enable vnc and type in a vnc password to use.
But no, you don’t need .mac, thank goodness!
Hope this helps,
Robert
Comments are closed