Ensure Bonjour Advertising Services Is Disabled

低级别 2自动化macos

说明

Bonjour is an auto-discovery mechanism for TCP/IP devices which enumerates devices and services within a local subnet. DNS on macOS is integrated with Bonjour and should not be turned off, but the Bonjour advertising service can be disabled. Bonjour can simplify device discovery from an internal rogue or compromised host. An attacker could use Bonjour's multicast DNS feature to discover a vulnerable or poorly- configured service or additional information to aid a targeted attack. Implementing this control disables the continuous broadcasting of "I'm here!" messages. Typical end-user endpoints should not have to advertise services to other computers. This setting does not stop the computer from sending out service discovery messages when looking for services on an internal subnet, if the computer is looking for a printer or server and using service discovery. To block all Bonjour traff...

检查方式

审计方法: Shell 命令

shell

/usr/bin/osascript -l JavaScript <<'EOS'
$.NSUserDefaults.alloc.initWithSuiteName('com.apple.mDNSResponder').objectForKey('NoMulticastAdvertisements').js
EOS

预期输出: true

修复方式

修复方法: 操作指南或基础设施补丁

Terminal Method: Run the following command to disable Bonjour Advertising services: % /usr/bin/sudo /usr/bin/defaults write /Library/Preferences/com.apple.mDNSResponder.plist NoMulticastAdvertisements -bool true Profile Method: Create or edit a configuration profile with the following information: 1. The PayloadType string is com.apple.mDNSResponder 2. The key to include is NoMulticastAdvertisements

属性

操作系统: macos-14
标签: macossonoma
参考: CIS Apple macOS 14.0 Sonoma Benchmark v3.1.0 - 4.1 Ensure Bonjour Advertising Services Is Disabled

检查本机

请在您有权审计的机器上运行此命令。扫描为只读操作。

shell

tmaegis scan --target macos --level 2