Details

Approved time servers _MUST_ be the only servers configured for use.

This rule ensures the uniformity of time stamps for information systems with multiple system clocks and systems connected over a network.

Solution

This is implemented by a Configuration Profile.

mobileconfig profile info:

com.apple.MCX:
timeServer:
time-a.nist.gov,time-b.nist.gov

Supportive Information

The following resource is also helpful.

• https://github.com/usnistgov/macos_security

This security hardening control applies to the following category of controls within NIST 800-53: Audit and Accountability, System and Communications Protection.This control applies to the following type of system Unix.

References

• 800-53|AU-8(1)
• 800-53|AU-8(1)(a)
• 800-53|AU-8(1)(b)
• 800-53|AU-12(1)
• 800-53|SC-45(1)
• CCE|CCE-85448-9, CCI|CCI-001891
• CCI|CCI-002046
• STIG-ID|APPL-11-000014

Source

• Tenable.com/audits