id: system_settings_internet_sharing_disable
title: Disable Internet Sharing
discussion: |
  If the system does not require Internet sharing, support for it is non-essential and _MUST_ be disabled.

  The information system _MUST_ be configured to provide only essential capabilities. Disabling Internet sharing helps prevent the unauthorized connection of devices, unauthorized transfer of information, and unauthorized tunneling.
references:
  nist:
    cce:
      macos_27:
        - CCE-XXXXX-X
      macos_26:
        - CCE-95382-8
      macos_15:
        - CCE-94375-3
      macos_14:
        - CCE-92971-1
    800-53r5:
      - AC-4
      - AC-20
    800-171r3:
      - 03.01.03
      - 03.01.20
  disa:
    cci:
      - CCI-000381
    srg:
      - SRG-OS-000095-GPOS-00049
    disa_stig:
      macos_26:
        - APPL-26-002007
      macos_15:
        - APPL-15-002007
      macos_14:
        - APPL-14-002007
    cmmc:
      - AC.L1-3.1.20
      - AC.L2-3.1.3
  bzk:
    bio:
      - 8.27
      - 8.27.01
  hhs:
    hicp:
      - 2.L.A
      - 6.L.A
  cis:
    benchmark:
      macos_26:
        - 2.3.3.7 (level 1)
      macos_15:
        - 2.3.3.7 (level 1)
      macos_14:
        - 2.3.3.7 (level 1)
    controls_v8:
      - 4.1
      - 4.8
platforms:
  macOS:
    '27.0': {}
    '26.0':
      benchmarks:
        - name: cis_lvl1
        - name: cis_lvl2
        - name: disa_stig
          severity: medium
        - name: nlmapgov_plus
    '15.0':
      benchmarks:
        - name: cis_lvl1
        - name: cis_lvl2
        - name: disa_stig
          severity: medium
        - name: nlmapgov_plus
    enforcement_info:
      check:
        shell: |-
          /usr/bin/osascript -l JavaScript << EOS
          $.NSUserDefaults.alloc.initWithSuiteName('com.apple.MCX')\
          .objectForKey('forceInternetSharingOff').js
          EOS
        result:
          string: 'true'
    introduced: '-1'
tags:
  - 800-53r5_low
  - 800-53r5_moderate
  - 800-53r5_high
  - 800-171
  - cisv8
  - cnssi-1253_low
  - cnssi-1253_high
  - cmmc_lvl2
  - cmmc_lvl1
  - cnssi-1253_moderate
  - hicp_lp
mobileconfig_info:
  - PayloadType: com.apple.MCX
    PayloadContent:
      - forceInternetSharingOff: true
