Issue
Unable to ping the MNB-1000 (Plant Controller) using firmware Revision 1.50E until 1.532
Product Line
TAC IA Series
Environment
I/A Series MNB-1000 (Plant Controller), firmware Revision 1.50E, until 1.532.
Cause
Common IP (Internet Protocol) ports echo (7), daytime (13) and time (37) are open. Having any of these IP ports open may be a cause of concern for customers that are sensitive to network security issues; these customers include defense installations, financial institutions, and government buildings.
Resolution
The services using the echo, daytime, and time protocols have been disabled which prevents IP ports 7, 13, and 37 from being open. These services and protocols have no purpose during the normal operation of the MNB-1000.
Disabling the echo protocol and closing of port (7) has the side effect that the MNB-1000 cannot be “pinged”. Using the command line program Ping will not detect an MNB-1000 that has firmware v1.50E installed. Use WPCT instead of Ping to verify communications with the MNB-1000.
Click here to see the Release Notes for firmware Revision 1.50E.
Update; In firmware 1.532, the ping function was re-initiated as the default. Please see the TPA-IA-19-0004.00 Firmware 1.532 Release Notes. It is always recommended the highest firmware version available for the MNB-1000 be used. Many issues have been addressed for better functionality.
