Port forwarding
https://community.wd.com/t/how-to-troubleshooting-remote-connectivity-issues/90877
https://community.wd.com/t/port-forwarding/92403/3
http://www.whatsmyip.org/port-scanner/server/
https://www.youtube.com/watch?v=i8iJ1Qrh3mE
https://www.youtube.com/watch?v=1hBiFK5hLfk
