Swizerlan Adding to what AstroDude42 wrote, my gists explain how to allow you to make an ssh connection to your ASIAir, how to give it a fixed IP address (either public or private within the network that the ASIAIr is put in) and how to install ZeroTier as a VPN solution. I by no means am connected to ZeroTier in any way, other than being a user and that it works for me. ASIAir runs Linux and as such other VPN solutions can be used as well if you prefer. But if your friend sets up the network in his remote observatory like anyone else would, then you will need a VPN connection to be able to connect to the ASIAir using the app from a remote location.