SC-32_system-partitioning

SC-32 System Partitioning

High-Level Description

Family: System and Communications Protection (SC) Framework: NIST SP 800-53 Rev 5

System partitioning is part of a defense-in-depth protection strategy. Organizations determine the degree of physical separation of system components. Physical separation options include physically distinct components in separate racks in the same room, critical components in separate rooms, and geographical separation of critical components. Security categorization can guide the selection of candidates for domain partitioning. Managed interfaces restrict or prohibit network access and information flow among partitioned system components.

What to Check

• Verify SC-32 System Partitioning is documented in SSP
• Confirm control is operating effectively
• Review evidence of continuous monitoring for SC-32

How to Test

Step 1: Review Documentation

Examine the System Security Plan (SSP) and related artifacts for SC-32 implementation details. Verify the organization has documented how this control is satisfied.

Step 2: Validate Implementation

# For cloud environments, use cloud-audit-mcp tools
# For on-premises, review system configurations directly

# Example: Check if account management policies exist
grep -r "account.management\|access.control" /etc/security/ 2>/dev/null

Step 3: Test Operating Effectiveness

Verify the control is actively functioning, not just documented. Check logs, configurations, and operational evidence.

Tools

Remediation Guide

Control Statement

Partition the system into [organization-defined] residing in separate [organization-defined] domains or environments based on [organization-defined].

Implementation Guidance

System partitioning is part of a defense-in-depth protection strategy. Organizations determine the degree of physical separation of system components. Physical separation options include physically distinct components in separate racks in the same room, critical components in separate rooms, and geographical separation of critical components. Security categorization can guide the selection of candidates for domain partitioning. Managed interfaces restrict or prohibit network access and information flow among partitioned system components.

Risk Assessment

CWE Categories

References

• NIST SP 800-53 Rev 5 - SC-32
• NIST SP 800-53A Rev 5 (Assessment Procedures)
• NIST SP 800-53 Rev 5 Full Catalog

Checklist

• Control documented in SSP
• Implementation evidence collected
• Operating effectiveness validated
• Continuous monitoring in place
• Related controls (AC-4, AC-6, SA-8, SC-2, SC-3) reviewed