https://thepi.io/how-to-set-up-a-raspberry-pi-plex-server/
http://allynh.com/blog/connecting-a-raspberry-pi-to-a-western-digital-my-cloud/
sudo arp-scan --interface=wlan0 --localnet
https://www.blackmoreops.com/2015/12/31/use-arp-scan-to-find-hidden-devices-in-your-network/