I have tried the above, it was shown offline all day, but it it still transmitting data which is captured online…
The unit, switch and router are all on a UPS so it was not a power interruption that caused it. There has been no changes to the firewall, and it did go online for a short period after I cycled the power to the unit yesterday and then when I later looked it was offline again.
What port is this using to connect or is there a heartbeat inbound?