---
title: 'macOS 27.0: Security Configuration - cnssi-1253_moderate'
description: |-
  This guide describes the actions to take when securing a macOS 27.0 system against the cnssi-1253_moderate security benchmark.

  Information System Security Officers and benchmark creators can use this catalog of settings in order to assist them in security benchmark creation. This list is a catalog, not a checklist or benchmark, and satisfaction of every item is not likely to be possible or sensible in many operational scenarios.
authors:
  - name: Bob Gendler
    organization: National Institute of Standards and Technology
  - name: Dan Brodjieski
    organization: National Aeronautics and Space Administration
  - name: Allen Golbig
    organization: Jamf
  - name: Rob Lamb
    organization: Los Alamos National Laboratory
  - name: Ekkehard Koch
    organization: ''
parent_values: recommended
platform:
  os: macOS
  version: 27.0
profile:
  - section: Auditing
    rules:
      - audit_acls_files_configure
      - audit_acls_folders_configure
      - audit_auditd_enabled
      - audit_configure_capacity_notify
      - audit_control_acls_configure
      - audit_control_group_configure
      - audit_control_mode_configure
      - audit_control_owner_configure
      - audit_failure_halt
      - audit_files_group_configure
      - audit_files_mode_configure
      - audit_files_owner_configure
      - audit_flags_aa_configure
      - audit_flags_ad_configure
      - audit_flags_ex_configure
      - audit_flags_fd_configure
      - audit_flags_fm_configure
      - audit_flags_fm_failed_configure
      - audit_flags_fr_configure
      - audit_flags_fw_configure
      - audit_flags_lo_configure
      - audit_folder_group_configure
      - audit_folder_owner_configure
      - audit_folders_mode_configure
      - audit_retention_configure
      - audit_settings_failure_notify
  - section: Authentication
    rules:
      - auth_pam_login_smartcard_enforce
      - auth_pam_su_smartcard_enforce
      - auth_pam_sudo_smartcard_enforce
      - auth_smartcard_allow
      - auth_smartcard_certificate_trust_enforce_high
      - auth_smartcard_certificate_trust_enforce_moderate
      - auth_smartcard_enforce
      - auth_ssh_password_authentication_disable
  - section: iCloud
    rules:
      - icloud_addressbook_disable
      - icloud_appleid_system_settings_disable
      - icloud_bookmarks_disable
      - icloud_calendar_disable
      - icloud_drive_disable
      - icloud_freeform_disable
      - icloud_game_center_disable
      - icloud_keychain_disable
      - icloud_mail_disable
      - icloud_notes_disable
      - icloud_photos_disable
      - icloud_private_relay_disable
      - icloud_reminders_disable
      - icloud_sync_disable
  - section: Operating System
    rules:
      - os_account_modification_disable
      - os_airdrop_disable
      - os_appleid_prompt_disable
      - os_asl_log_files_owner_group_configure
      - os_asl_log_files_permissions_configure
      - os_authenticated_root_enable
      - os_blank_bluray_disable
      - os_blank_cd_disable
      - os_blank_dvd_disable
      - os_bluray_read_only_enforce
      - os_bonjour_disable
      - os_burn_support_disable
      - os_calendar_app_disable
      - os_cd_read_only_enforce
      - os_certificate_authority_trust
      - os_config_data_install_enforce
      - os_config_profile_ui_install_disable
      - os_dictation_disable
      - os_disk_image_disable
      - os_dvdram_disable
      - os_erase_content_and_settings_disable
      - os_external_storage_access_defined
      - os_facetime_app_disable
      - os_filevault_autologin_disable
      - os_firewall_default_deny_require
      - os_firmware_password_require
      - os_gatekeeper_enable
      - os_genmoji_disable
      - os_handoff_disable
      - os_home_folders_default
      - os_home_folders_secure
      - os_httpd_disable
      - os_icloud_storage_prompt_disable
      - os_image_playground_disable
      - os_install_log_retention_configure
      - os_iphone_mirroring_disable
      - os_ir_support_disable
      - os_loginwindow_adminhostinfo_disabled
      - os_mail_app_disable
      - os_mail_smart_reply_disable
      - os_mail_summary_disable
      - os_mdm_require
      - os_messages_app_disable
      - os_newsyslog_files_owner_group_configure
      - os_newsyslog_files_permissions_configure
      - os_nfsd_disable
      - os_notes_transcription_disable
      - os_notes_transcription_summary_disable
      - os_on_device_dictation_enforce
      - os_parental_controls_enable
      - os_password_autofill_disable
      - os_password_hint_remove
      - os_password_proximity_disable
      - os_password_sharing_disable
      - os_photos_enhanced_search_disable
      - os_policy_banner_loginwindow_enforce
      - os_policy_banner_ssh_configure
      - os_policy_banner_ssh_enforce
      - os_power_nap_disable
      - os_privacy_setup_prompt_disable
      - os_recovery_lock_enable
      - os_removable_media_disable
      - os_root_disable
      - os_safari_reader_summary_disable
      - os_screensaver_loginwindow_enforce
      - os_secure_boot_verify
      - os_setup_assistant_filevault_enforce
      - os_sip_enable
      - os_siri_prompt_disable
      - os_skip_apple_intelligence_enable
      - os_skip_screen_time_prompt_enable
      - os_skip_unlock_with_watch_enable
      - os_ssh_fips_compliant
      - os_ssh_server_alive_count_max_configure
      - os_ssh_server_alive_interval_configure
      - os_sshd_channel_timeout_configure
      - os_sshd_client_alive_count_max_configure
      - os_sshd_client_alive_interval_configure
      - os_sshd_fips_compliant
      - os_sshd_login_grace_time_configure
      - os_sshd_per_source_penalties_configure
      - os_sshd_permit_root_login_configure
      - os_sshd_unused_connection_timeout_configure
      - os_sudo_log_enforce
      - os_sudoers_timestamp_type_configure
      - os_system_read_only
      - os_tftpd_disable
      - os_time_server_enabled
      - os_touchid_prompt_disable
      - os_unlock_active_user_session_disable
      - os_user_app_installation_prohibit
      - os_uucp_disable
      - os_writing_tools_disable
  - section: Password Policy
    rules:
      - pwpolicy_account_inactivity_enforce
      - pwpolicy_account_lockout_enforce
      - pwpolicy_account_lockout_timeout_enforce
      - pwpolicy_alpha_numeric_enforce
      - pwpolicy_custom_regex_enforce
      - pwpolicy_history_enforce
      - pwpolicy_lower_case_character_enforce
      - pwpolicy_max_lifetime_enforce
      - pwpolicy_minimum_length_enforce
      - pwpolicy_minimum_lifetime_enforce
      - pwpolicy_simple_sequence_disable
      - pwpolicy_special_character_enforce
      - pwpolicy_temporary_or_emergency_accounts_disable
      - pwpolicy_upper_case_character_enforce
  - section: System Settings
    rules:
      - system_settings_airplay_receiver_disable
      - system_settings_apple_watch_unlock_disable
      - system_settings_automatic_login_disable
      - system_settings_automatic_logout_enforce
      - system_settings_biometric_disable
      - system_settings_bluetooth_disable
      - system_settings_bluetooth_settings_disable
      - system_settings_bluetooth_sharing_disable
      - system_settings_content_caching_disable
      - system_settings_critical_update_install_enforce
      - system_settings_diagnostics_reports_disable
      - system_settings_external_intelligence_disable
      - system_settings_external_intelligence_sign_in_disable
      - system_settings_filevault_enforce
      - system_settings_find_my_disable
      - system_settings_firewall_enable
      - system_settings_firewall_stealth_mode_enable
      - system_settings_gatekeeper_identified_developers_allowed
      - system_settings_gatekeeper_override_disallow
      - system_settings_guest_access_smb_disable
      - system_settings_guest_account_disable
      - system_settings_hot_corners_disable
      - system_settings_hot_corners_secure
      - system_settings_improve_assistive_voice_disable
      - system_settings_improve_search_disable
      - system_settings_improve_siri_dictation_disable
      - system_settings_internet_accounts_disable
      - system_settings_internet_sharing_disable
      - system_settings_location_services_disable
      - system_settings_loginwindow_prompt_username_password_enforce
      - system_settings_media_sharing_disabled
      - system_settings_password_hints_disable
      - system_settings_personalized_advertising_disable
      - system_settings_printer_sharing_disable
      - system_settings_rae_disable
      - system_settings_remote_management_disable
      - system_settings_screen_sharing_disable
      - system_settings_screensaver_ask_for_password_delay_enforce
      - system_settings_screensaver_password_enforce
      - system_settings_screensaver_timeout_enforce
      - system_settings_security_update_install
      - system_settings_siri_disable
      - system_settings_siri_settings_disable
      - system_settings_smbd_disable
      - system_settings_ssh_disable
      - system_settings_ssh_enable
      - system_settings_system_wide_preferences_configure
      - system_settings_time_server_configure
      - system_settings_time_server_enforce
      - system_settings_token_removal_enforce
      - system_settings_touch_id_settings_disable
      - system_settings_usb_restricted_mode
      - system_settings_wallet_applepay_settings_disable
      - system_settings_wifi_disable
  - section: Inherent
    rules:
      - audit_record_reduction_report_generation
      - os_allow_info_passed
      - os_application_sandboxing
      - os_change_security_attributes
      - os_enforce_access_restrictions
      - os_grant_privs
      - os_implement_cryptography
      - os_implement_memory_protection
      - os_limit_gui_sessions
      - os_logical_access
      - os_logoff_capability_and_message
      - os_malicious_code_prevention
      - os_obscure_password
      - os_predictable_behavior
      - os_prevent_priv_execution
      - os_prevent_priv_functions
      - os_prevent_unauthorized_disclosure
      - os_prohibit_remote_activation_collab_devices
      - os_provide_disconnect_remote_access
      - os_reauth_privilege
      - os_reauth_users_change_authenticators
      - os_remove_software_components_after_updates
      - os_required_crypto_module
      - os_secure_enclave
      - os_separate_functionality
      - os_store_encrypted_passwords
      - os_unique_identification
      - os_verify_remote_disconnection
      - pwpolicy_emergency_accounts_disable
      - pwpolicy_force_password_change
      - pwpolicy_temporary_accounts_disable
  - section: Permanent
    rules:
      - audit_off_load_records
      - audit_records_processing
      - os_auth_peripherals
      - os_continuous_monitoring
      - os_limit_dos_attacks
      - os_protect_dos_attacks
      - os_provide_automated_account_management
      - os_reauth_devices_change_authenticators
      - os_secure_name_resolution
      - system_settings_wifi_disable_when_connected_to_ethernet
  - section: Not Applicable
    rules:
      - os_access_control_mobile_devices
      - os_identify_non-org_users
      - os_information_validation
      - os_managed_access_control_points
      - os_non_repudiation
      - os_nonlocal_maintenance
