Assessment Objective

Determine if:

• MA-04(04)(a) nonlocal maintenance sessions are protected by employing [Assignment: authenticators that are replay resistant];
• MA-04(04)(b)
  • MA-04(04)(b)(01) nonlocal maintenance sessions are protected by separating maintenance sessions from other network sessions with the system by physically separated communication paths; or
  • MA-04(04)(b)(02) nonlocal maintenance sessions are protected by logically separated communication paths.

Assessment Methods

Examine

• Maintenance policy
• procedures addressing nonlocal system maintenance
• system design documentation
• system configuration settings and associated documentation
• maintenance records
• audit records
• system security plan
• other relevant documents or records

Interview

• Organizational personnel with system maintenance responsibilities
• network engineers
• organizational personnel with information security responsibilities
• system/network administrators

Test

• Organizational processes for protecting nonlocal maintenance sessions
• mechanisms implementing replay-resistant authenticators
• mechanisms implementing logically separated/encrypted communication paths

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.