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os_power_nap_disable Disable Power Nap

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

Title

Disable Power Nap

Control

/usr/bin/pmset -g custom | /usr/bin/awk '/powernap/ { sum+=$2 } END {print sum}'

Discussion

Power Nap _MUST_ be disabled.

NOTE: Power Nap allows your Mac to perform actions while a Mac is asleep. This can interfere with USB power and may cause devices such as smartcards to stop functioning until a reboot and must therefore be disabled on all applicable systems.

The following Macs support Power Nap:

* MacBook (Early 2015 and later)
* MacBook Air (Late 2010 and later)
* MacBook Pro (all models with Retina display)
* Mac mini (Late 2012 and later)
* iMac (Late 2012 and later)
* Mac Pro (Late 2013 and later)

Related controls

cm-7, cm-7.1

Fix

[source,bash]
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/usr/bin/pmset -a powernap 0
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