Lock down the virtual drone

In a previous video we installed a virtual drone on a cloud linux server.
In this video, we show how to set up a firewall to prevent unauthorized access to your virtual drone.
Then, we set up a VPN using ZeroTier to give you access.

See also
https://www.youtube.com/watch?v=s8Cb9oYaeFM&list=PLMdLsDgspkNRARR1_vumebgBhTmWc7t30&index=3