● IED functions and features are assigned to different password levels. The assignment is fixed.
● The audit trail is recorded, listing events in the order in which they occur, held in a circular buffer.
● Records contain all defined fields from the standard and record all defined function event types where
the function is supported.
● No password defeat mechanism exists. Instead a secure recovery password scheme is implemented.
● Unused ports (physical and logical) may be disabled.
Chapter 9 - Cyber-Security MiCOM P747
280 P747-TM-EN-1
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