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APPL-15-002007 The macOS system must disable Internet Sharing.

DISA STIG library V1R8
All changes in this version
first version loaded CAT II

Maps to CM-7 via CCI-000381

Title

The macOS system must disable Internet Sharing.

Control

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

Discussion

If the system does not require Internet Sharing, support for it is nonessential and must be disabled. The information system must be configured to provide only essential capabilities. Disabling Internet Sharing helps prevent unauthorized connection of devices, transfer of information, and tunneling.

Related controls

CCI-000381

Fix

Configure the macOS system to disable Internet Sharing by installing the "com.apple.MCX" configuration profile.