Setup guide

4. Uncheck the checkbox in front of the Wake when the modem detects
a ring option to disable it.
5. Uncheck the checkbox in front of the Wake for Ethernet network
administrator access option to disable it.
6. Uncheck the checkbox in front of the Allow power button to sleep the
computer option to disable it.
7. Uncheck the checkbox in front of the Restart automatically if the
computer “freezes" option to disable it. Behavior that causes the
system to freeze should be investigated because it may be malicious.
3.5.6 Sound
The microphone setting in the Sound panel may present security risks. This is
especially important because an internal microphone is standard on many
Macintosh computers. The number and type of devices that appear for sound input
will vary depending on the hardware configuration of the machine.
To secure the input settings for the machine:

Set the input volume for each device in the Input settings section of the
System Preferences sound panel to the lowest possible setting. Some
devices, such as “Digital In,” may not have a volume control.

Make sure the device selected for sound input is NOT the internal
microphone, assuming there is another device listed in the Input
settings.

Make sure no external audio input devices are attached, especially to
the device that was chosen in the input settings. For example, if “Line
In” was selected as the input device, make sure a microphone is not
attached to the Line In of the machine.

If there is a Line In jack on the machine, a “dummy plug” should be
used to block that jack.

If there is an internal microphone in the machine, it should be
physically disabled. As explained in the section on Bluetooth above,
disabling or modifying the hardware will likely void the warranty on
the machine if not performed by an Apple Certified Technician. For
information on becoming an Apple Certified Technician, send a request
for information to the Apple Federal e-mail address:
[e-mail]
Additional instructions for disabling the microphone appear in a later section of this
chapter.
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UNCLASSIFIED