8.17
Clock Synchronisation
Information processing systems used by the organization should synchronize their clocks with approved time sources.
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5.4.3.1 The organization shall implement secure configurations for all their devices unless it is impossible to do so on a specific device:
a) by turning off unnecessary features i.e., block unused ports, disable unused services, remove unused or obsolete software; and
b) by enabling all relevant security features. -
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