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  3. CIS Microsoft Windows 10 Enterprise Release 1809 V1.6.1 L2 Bl Ng
  4. Ensure ‘Link-Layer Topology Discovery Mapper (lltdsvc)’ is set to ‘Disabled’

Ensure ‘Link-Layer Topology Discovery Mapper (lltdsvc)’ is set to ‘Disabled’

Details

Creates a Network Map, consisting of PC and device topology (connectivity) information, and metadata describing each PC and device.

The recommended state for this setting is: Disabled.

Rationale:

The feature that this service enables could potentially be used for unauthorized discovery and connection to network devices. Disabling the service helps to prevent responses to requests for network topology discovery in high security environments.

Solution

To establish the recommended configuration via GP, set the following UI path to: Disabled.

Computer ConfigurationPoliciesWindows SettingsSecurity SettingsSystem ServicesLink-Layer Topology Discovery Mapper

Impact:

The Network Map will not function properly.

Default Value:

Manual

Supportive Information

The following resource is also helpful.

This security hardening control applies to the following category of controls within NIST 800-53: System and Information Integrity.This control applies to the following type of system Windows.

References

Source

Updated on July 16, 2022
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