5. Communications

5.1 Websites

5.1.1 Balena

Balena is an Internet of Things (IoT) deployment and device management platform. Voltera uses Balena to remotely deploy updates to NOVA’s software and firmware. The operating system on the Nano module is read-only.

5.1.2 Google Firebase

Google Firebase is a mobile and web application development platform. NOVA uses its Authentication and Cloud Firestore services for user management, user data, and analytics systems.

5.1.3 myvoltera.io

https://www.myvoltera.io is used to initially setup NOVA and connect it to the network.

5.2 Ports

Port	Service(s)	Description
53	Balena	DNS: used by devices to resolve Balena hostnames for connection to the Balena service
123	Balena	NTP: used by devices to synchronize time
443	Balena	HTTPS: used by devices to poll Balena for updates and to download releases and host OS updates
	OpenVPN	Used by devices to connect to Balena to provide real-status, control, and an interactive terminal
	www.myvoltera.io	Used by devices to communicate with user's computer for online operation
3080	Google Firebase	Cloud Firestore
9099	Google Firebase	Authentication
80	connect.myvoltera.io	Used by devices to communicate with user's computer for offline operation

5.3 Traffic

NOVA requests software updates if they are available and network information once every hour if it is sitting idle. During operation, NOVA sends the data detailed in section 7.0 to Voltera for product improvement.