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BRACKETOLOGY | FEDRAMP

SC-22: ARCHITECTURE AND PROVISIONING FOR NAME / ADDRESS RESOLUTION SERVICE

  • FedRAMP Baseline Membership SC-22:
  • LOW
  • MODERATE
  • HIGH

FedRAMP Bracketology

Use the FedRAMP Control Membership information above to determine if a control or control enhancement is required for each Impact Baseline — LOW, MODERATE, or HIGH

Click on the panel below each control or control enhancement to review the FedRAMP Impact Baseline-specific control configuration requirements for each of the [BRACKETS] in each control and/or control enhancement.

Review and use Additional Requirements and Guidance to build FedRAMP-compliant controls for your risk-based cybersecurity program.

To change the baseline view in the panel, click on LOW, MODERATE, or HIGH when the panel is open

Panels only appear where there are [BRACKETS] in the control or enhancement or where there is FedRAMP-specific requirements or guidance available.

The information systems that collectively provide name/address resolution service for an organization are fault-tolerant and implement internal/external role separation.

SUPPLEMENTAL GUIDANCE

Information systems that provide name and address resolution services include, for example, domain name system (DNS) servers. To eliminate single points of failure and to enhance redundancy, organizations employ at least two authoritative domain name system servers, one configured as the primary server and the other configured as the secondary server. Additionally, organizations typically deploy the servers in two geographically separated network subnetworks (i.e., not located in the same physical facility). For role separation, DNS servers with internal roles only process name and address resolution requests from within organizations (i.e., from internal clients). DNS servers with external roles only process name and address resolution information requests from clients external to organizations (i.e., on external networks including the Internet). Organizations specify clients that can access authoritative DNS servers in particular roles (e.g., by address ranges, explicit lists).

CONTROL ENHANCEMENTS

NO CONTROL ENHANCEMENTS

REFERENCES:

  • NIST Special Publication 800-81