03.01.20 Use of External Systems

Statement

• a. Prohibit the use of external systems unless the systems are specifically authorized.

• b. Establish the following security requirements to be satisfied on external systems prior to allowing use of or access to those systems by authorized individuals: {{ insert: param, A.03.01.20.ODP.01 }}.

• c. Permit authorized individuals to use external systems to access the organizational system or to process, store, or transmit CUI only after:

  • 01. Verifying that the security requirements on the external systems as specified in the organization’s system security plans have been satisfied and

  • 02. Retaining approved system connection or processing agreements with the organizational entities hosting the external systems.

• d. Restrict the use of organization-controlled portable storage devices by authorized individuals on external systems.

Guidance

External systems are systems that are used by but are not part of the organization. These systems include personally owned systems, system components, or devices; privately owned computing and communication devices in commercial or public facilities; systems owned or controlled by nonfederal organizations; and systems managed by contractors. Organizations have the option to prohibit the use of any type of external system or specified types of external systems (e.g., prohibit the use of external systems that are not organizationally owned). Terms and conditions are consistent with the trust relationships established with the entities that own, operate, or maintain external systems and include descriptions of shared responsibilities. Authorized individuals include organizational personnel, contractors, or other individuals with authorized access to the organizational system and over whom organizations have the authority to impose specific rules of behavior regarding system access. Restrictions that organizations impose on authorized individuals may vary depending on the trust relationships between organizations. Organizations need assurance that external systems satisfy the necessary security requirements so as not to compromise, damage, or harm the system. This requirement is related to [](#/cprt/framework/version/SP_800_171_3_0_0/home?element=03.16.03) 03.16.03.

Assessment objective

the following security requirements to be satisfied on external systems prior to allowing the use of or access to those systems by authorized individuals are established: {{ insert: param, A.03.01.20.ODP.01 }}.

Assessment objective

the use of external systems is prohibited unless the systems are specifically authorized.

Assessment objective

authorized individuals are permitted to use external systems to access the organizational system or to process, store, or transmit CUI only after verifying that the security requirements on the external systems as specified in the organization’s system security plans have been satisfied.

Assessment objective

the use of organization-controlled portable storage devices by authorized individuals on external systems is restricted.

Assessment objective

authorized individuals are permitted to use external systems to access the organizational system or to process, store, or transmit CUI only after retaining approved system connection or processing agreements with the organizational entity hosting the external systems.

Assessment method

• access control policy and procedures procedures for the use of external systems terms and conditions for the use of external systems external systems security requirements list of types of applications accessible from external systems system configuration settings system security plan other relevant documents or records

Assessment method

• personnel with responsibilities for defining terms, conditions, and security requirements for the use of external systems personnel with information security responsibilities system administrators

Assessment method

• mechanisms for implementing or enforcing terms, conditions, and security requirements for the use of external systems

1. Overview

1.1 References

1.2 Identified Requirements

1.3 Related Regulations

2. Identified Requirements

3. Related Regulations

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.