Commonly required LAN port traffic

The Leviton Energy Monitoring Hub datalogger by default typically needs the following ports enabled for inbound or outbound traffic.

Port (default)	Direction	Description
80/tcp 443/tcp	inbound	Web interface for product configuration and diagnostics
80/tcp 443/tcp	outbound	Firmware update checks and downloads from host server buildingmanageronline.com . HTTP/HTTPS/XML upload of logged data.
37/tcp 123/udp	outbound	time sync (default is to sync against a pool of available internet time servers; can be user-defined)
53	outbound	DNS lookups. Default are public internet DNS servers.
2022/tcp	outbound	Leviton tech support remote access. Allows for easier troubleshooting assistance. If the feature is enabled, a Leviton tech must be provided the admin login password to gain access. Host server is buildingmanageronline.com .
21/tcp	outbound	FTP protocol data upload, command connection (active or passive mode)
1024-65535/tcp	outbound	FTP protocol data upload, data connection (passive mode) - contact whom you are sending the data to via FTP for more on this as their servers may limit the range to a smaller window
20/tcp	inbound	FTP protocol data upload, data connection (active mode)

Additional ports may be required depending on the configuration options set in the device.