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NIST SP 800-53 Learning Center

SC-48 — Sensor Relocation

Read the official control and assessment content, then use the separately labeled Bare Metal Cyber perspective to connect the requirement to implementation, evidence, and sustained operation.

1Enhancements
3Parameters
0Baseline memberships
3Assessment methods

SC — System and Communications Protection · NIST SP 800-53 Release 5.2.0

Official NIST control content

Control statement

Relocate [Organization-defined: sensors and monitoring capabilities] to [Organization-defined: locations] under the following conditions or circumstances: [Organization-defined: conditions or circumstances].

Official NIST discussion

Discussion

Adversaries may take various paths and use different approaches as they move laterally through an organization (including its systems) to reach their target or as they attempt to exfiltrate information from the organization. The organization often only has a limited set of monitoring and detection capabilities, and they may be focused on the critical or likely infiltration or exfiltration paths. By using communications paths that the organization typically does not monitor, the adversary can increase its chances of achieving its desired goals. By relocating its sensors or monitoring capabilities to new locations, the organization can impede the adversary’s ability to achieve its goals. The relocation of the sensors or monitoring capabilities might be done based on threat information that the organization has acquired or randomly to confuse the adversary and make its lateral transition through the system or organization more challenging.

Official OSCAL parameters

Organization-defined parameters

These values must be resolved through the organization’s tailoring and governance process. Bracketed parameter references in the control text identify where a decision is required.

sensors and monitoring capabilitiessensors and monitoring capabilities to be relocated are defined;
locationslocations to where sensors and monitoring capabilities are to be relocated are defined;
conditions or circumstancesconditions or circumstances for relocating sensors and monitoring capabilities are defined;
Original Bare Metal Cyber perspective

From control text to operational evidence

Use Sensor Relocation as a testable risk decision. Translate the official statement into accountable people, repeatable processes, configured technology, and evidence that demonstrates the outcome over time. In this family, pay particular attention to secure architecture, boundary protection, communications protection, cryptography, and system isolation.

Implementation workflow

  • Define the control boundary, responsible owner, inherited portions, and systems or processes in scope.
  • Resolve each organization-defined parameter before declaring the control implemented.
  • Document how the implementation satisfies every clause of the official control statement.
  • Collect evidence as a normal byproduct of operation rather than only before an assessment.
  • Review exceptions, changes, and monitoring results on a risk-based cadence.

Evidence examples

  • network and trust-boundary diagrams
  • firewall and gateway configurations
  • cryptographic configuration and key records
  • segmentation and isolation test results

Common failure patterns

  • diagrams omit cloud and third-party paths
  • encryption enabled without key governance
  • flat trust zones allow unnecessary lateral movement
  • boundary rules accumulate without owner review

Questions practitioners should ask

  • What risk decision is this control intended to support in this system?
  • Which parts are implemented locally, inherited, shared, or not applicable—and what evidence supports that decision?
  • Do the documented narrative, deployed configuration, operating process, and collected evidence agree?
  • What event or threshold requires the implementation to be reviewed or changed?
Official NIST SP 800-53A content

Assessment objectives and methods

Show the assessment objective

[Organization-defined: sensors and monitoring capabilities] are relocated to [Organization-defined: locations] under [Organization-defined: conditions or circumstances].

Examine

  • System and communications protection policy
  • procedures addressing sensor and monitoring capability relocation
  • list of sensors/monitoring capabilities to be relocated
  • change control records
  • configuration management records
  • system design documentation
  • system configuration settings and associated documentation
  • system audit records
  • system security plan
  • other relevant documents or records

Interview

  • System/network administrators
  • organizational personnel with information security responsibilities
  • organizational personnel installing, configuring, and/or maintaining the system

Test

  • Mechanisms supporting and/or implementing sensor relocation
Official relationships

Related controls

These relationships come from the official OSCAL catalog. They indicate useful dependencies or context, not automatic inheritance or equivalence.

Official NIST enhancements

Control enhancements

Enhancements add specificity, strength, or scope to the base control. Baseline badges show explicit selections in the official SP 800-53B OSCAL profiles.

Official NIST control enhancement

SC-48(1) — Dynamic Relocation of Sensors or Monitoring Capabilities

Dynamically relocate [Organization-defined: sensors and monitoring capabilities] to [Organization-defined: locations] under the following conditions or circumstances: [Organization-defined: conditions or circumstances].

Official discussion

None.

Organization-defined parameters (3)
sensors and monitoring capabilitiessensors and monitoring capabilities to be dynamically relocated are defined;
locationslocations to where sensors and monitoring capabilities are to be dynamically relocated are defined;
conditions or circumstancesconditions or circumstances for dynamically relocating sensors and monitoring capabilities are defined;
Assessment objectives and methods

[Organization-defined: sensors and monitoring capabilities] are dynamically relocated to [Organization-defined: locations] under [Organization-defined: conditions or circumstances].

Examine

  • System and communications protection policy
  • procedures addressing sensor and monitoring capability relocation
  • list of sensors/monitoring capabilities to be relocated
  • change control records
  • configuration management records
  • system design documentation
  • system configuration settings and associated documentation
  • system audit records
  • system security plan
  • other relevant documents or records

Interview

  • System/network administrators
  • organizational personnel with information security responsibilities
  • organizational personnel installing, configuring, and/or maintaining the system

Test

  • SELECT FROM: Mechanisms supporting and/or implementing sensor relocation
Source record

Authoritative sources