NIST 800-172_3.4.2e

NIST 800-172



Employ automated mechanisms to detect misconfigured or unauthorized system components; after detection [Selection (one or more): remove the components; place the components in a quarantine or remediation network] to facilitate patching re-configuration or other mitigations.

Establish and enforce security configuration settings for information technology products employed in organizational systems.System components used to process store transmit or protect CUI are monitored and checked against the authoritative source (i.e. hardware and software inventory and associated baseline configurations). From an automated assessment perspective the system description provided by the authoritative source is referred to as the desired state. Using automated tools the desired state is compared to the actual state to check for compliance or deviations. Security responses to system components that are unknown or that deviate from approved configurations can include removing the components; halting system functions or processing; placing the system components in a quarantine or remediation network that facilitates patching re-configuration or other mitigations; or issuing alerts and/or notifications to personnel when there is an unauthorized modification of an organization-defined configuration item. Responses can be automated manual or procedural. Components that are removed from the system are rebuilt from the trusted configuration baseline established by the authoritative source.


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