Assessment Objective

Determine if:

• the use of the following functions is prohibited or restricted: [Assignment: functions].
• the use of the following ports is prohibited or restricted: [Assignment: ports].
• the use of the following protocols is prohibited or restricted: [Assignment: protocols].
• the use of the following connections is prohibited or restricted: [Assignment: connections].
• the use of the following services is prohibited or restricted: [Assignment: services].
• the system is reviewed [Assignment: frequency] to identify unnecessary or nonsecure functions, ports, protocols, connections, and services.
• unnecessary or nonsecure functions, ports, protocols, connections, and services are disabled or removed.
• the system is configured to provide only mission-essential capabilities.

Assessment Methods

Examine

• configuration management policy and procedures
• procedures for least functionality in the system
• configuration management plan
• system design documentation
• system configuration settings
• system component inventory
• common secure configuration checklists
• documented reviews of functions, ports, protocols, and services
• change control records
• system audit records
• system security plan
• other relevant documents or records

Interview

• personnel with configuration management responsibilities
• personnel with responsibilities for reviewing functions, ports, protocols, and services
• personnel with information security responsibilities
• system developers
• system administrators

Test

• processes for prohibiting or restricting functions, ports, protocols, and services
• processes for reviewing or disabling functions, ports, protocols, and services
• mechanisms for implementing the review and disabling of functions, ports, protocols, and services
• mechanisms for implementing restrictions on or the prohibition of functions, ports, protocols, and services

Linked Issues

• NIST -

  EN: Publications of the National Institute of Standards and Technology (NIST), U.S. Department of Commerce, https://www.nist.gov/, from their electronic versions (OSCAL; SP 800-63-4 from its HTML version, https://pages.nist.gov/800-63-4/). Works of NIST employees are not subject to copyright protection in the United States (17 U.S.C. § 105); the OSCAL content is dedicated to the public domain worldwide (CC0 1.0); outside the United States NIST grants the right to reprint its technical series publications in all formats (NIST copyright statement). Republished courtesy of the National Institute of Standards and Technology; each document names its citation. Divided into sections and converted into the GRCA format, the wording unchanged. Only the versions published by NIST are authoritative.

  DE: Veröffentlichungen des National Institute of Standards and Technology (NIST), U.S. Department of Commerce, https://www.nist.gov/, aus ihren elektronischen Fassungen (OSCAL; SP 800-63-4 aus ihrer HTML-Fassung, https://pages.nist.gov/800-63-4/). Werke von NIST-Beschäftigten sind in den USA urheberrechtlich nicht geschützt (17 U.S.C. § 105); die OSCAL-Inhalte sind weltweit gemeinfrei gestellt (CC0 1.0); außerhalb der USA räumt das NIST das Recht ein, seine Technical-Series-Publikationen in allen Formaten neu zu veröffentlichen (Copyright-Hinweis des NIST). „Republished courtesy of the National Institute of Standards and Technology“; jedes Dokument nennt seine Zitierangabe. In Abschnitte aufgeteilt und in das GRCA-Format umgewandelt, der Wortlaut unverändert. Maßgeblich sind allein die vom NIST veröffentlichten Fassungen.