Big Sur - Disable Bonjour Multicast

Information

Bonjour multicast advertising _MUST_ be disabled to prevent the system from broadcasting its presence and available services over network interfaces.

Solution

This is implemented by a Configuration Profile.

mobileconfig profile info:

com.apple.mDNSResponder:
NoMulticastAdvertisements:
True

See Also

https://github.com/usnistgov/macos_security

Item Details

Audit Name: NIST macOS Big Sur v1.4.0 - 800-53r4 Moderate

Category: CONFIGURATION MANAGEMENT

References: 800-53|CM-7, 800-53|CM-7(1), 800-53|CM-7a., CCE|CCE-85299-6, CCI|CCI-000381, STIG-ID|APPL-11-002005

Plugin: Unix

Control ID: a07ac705f6c8cd32bffddb592b4558fda7a077ba2ac7ab771e4285561c07a0c0