Network firewall difficulty:

The network interface controller (NIC) in the HOBO RX3000 and U30-ETH and WIF will attempt to make a connection to the URL every "Readout Interval." Your firewall must allow the logger to connect to this URL, and must also allow the MAC address of the logger NIC.

Your "network firewall" must allow (not filter/deny) the RX3000 or U30 all of the following:

  • Must Allow Access to URL
  • Port 54328 must be open
  • MAC Address (printed on the door of the RX3000 or U30 logger) must be white-listed, allowed, and not blocked

For an Ethernet connection you may need to demonstrate to your IT department that a network firewall is blocking the U30 from making a connection to HOBOlink.


Tech Note