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os_time_offset_limit_configure Ensure Time Offset Within Limits

NIST macOS Security Compliance Project Sequoia Guidance, Revision 4.0 (be5491f)
All changes in this version
first version loaded macOS

Title

Ensure Time Offset Within Limits

Control

/usr/bin/sntp $(/usr/sbin/systemsetup -getnetworktimeserver | /usr/bin/awk '{print $4}') | /usr/bin/awk -F'.' '/\+\/\-/{if (substr($1,2) >= 270) {print "No"} else {print "Yes"}}'

Discussion

The macOS system time _MUST_ be monitored to not drift more than four minutes and thirty seconds.

Fix

[source,bash]
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/usr/bin/sntp -Ss $(/usr/sbin/systemsetup -getnetworktimeserver | /usr/bin/awk '{print $4}')
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