SA-9(2)—External Information System Services

PBMM (P2)

Secret (P2)

Management

>Control Description

EXTERNAL INFORMATION SYSTEMS | IDENTIFICATION OF FUNCTIONS / PORTS / PROTOCOLS / SERVICES The organization requires providers of ⚙organization-defined external information system services to identify the functions, ports, protocols, and other services required for the use of such services.

>Supplemental Guidance

Information from external service providers regarding the specific functions, ports, protocols, and services used in the provision of such services can be particularly useful when the need arises to understand the trade-offs involved in restricting certain functions/services or blocking certain ports/protocols. Related control: CM-7.

>Tailoring Guidance

Select if outsourcing to a service provider. GC departments using SSC should select as well.

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