The optional TripWire RJ45 port lock physically blocks the main serial configuration port of the GRIDlink. Once installed it cannot be removed without destroying it providing a visual indication that an intrusion attempt has been made.
This device is a Military grade solution and is certified with the National Security Agency Acquisition Resource Center (NSAARC). Each one has a unique serial number which is recorded upon shipment and paired with GRIDlink’s serial number.
As a second line of defense, the RS232 port is disabled in the firmware configuration.