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APPL-26-000014 The macOS system must enforce time synchronization.

DISA STIG library V1R4
All changes in this version
first version loaded CAT II

Maps to SC-45, SC-45(1) via CCI-004923, CCI-004926, CCI-004922

Title

The macOS system must enforce time synchronization.

Control

Verify the macOS system is configured to enforce time synchronization with the following command: /usr/bin/osascript -l JavaScript << EOS $.NSUserDefaults.alloc.initWithSuiteName('com.apple.timed')\ .objectForKey('TMAutomaticTimeOnlyEnabled').js EOS If the result is not "true", this is a finding.

Discussion

Time synchronization must be enforced on all networked systems. This rule ensures the uniformity of time stamps for information systems with multiple system clocks and systems connected over a network. Satisfies: SRG-OS-000355-GPOS-00143, SRG-OS-000356-GPOS-00144, SRG-OS-000785-GPOS-00250

Related controls

CCI-004922, CCI-004923, CCI-004926

Fix

Configure the macOS system to enforce time synchronization by installing the "com.apple.ManagedClient.preferences" configuration profile.