NIST SP 800-53 Rev 5
CA - Assessment, Authorization, and Monitoring

NIST SP 800-53 Rev 5 NIST800-CA-9: CA-9 Internal System Connections

a. Authorize internal connections of [Assignment: organization-defined system components or classes of components] to the system; b. Document, for each internal connection, the interface characteristics, security and privacy requirements, and the nature of the information communicated; c. Terminate internal system connections after [Assignment: organization-defined conditions]; and d. Review [Assignment: organization-defined frequency] the continued need for each internal connection.

Maintained by Gerard BlokdykVerified against the published standard Control text last updated

What else in your programme already covers this

This control maps to 31 controls across 17 other frameworks. If you already hold one of them, the evidence you collected for it is the starting point here rather than new work.

CIS Controls v8 · 5 controls

  • CIS-12.2 Establish and Maintain a Secure Network Architecture
  • CIS-12.4 Establish and Maintain Architecture Diagram(s)
  • CIS-13.4 Perform Traffic Filtering Between Network Segments
  • CIS-13.5 Manage Access Control for Remote Assets
  • CIS-13.9 Deploy Port-Level Access Control

PCI DSS 4.0 · 5 controls

  • 1.2.3 1.2.3 Accurate network diagram of CDE connections
  • 1.2.5 1.2.5 Allowed services, protocols and ports justified
  • 1.3.1 1.3.1 Inbound CDE traffic restricted
  • 1.3.2 1.3.2 Outbound CDE traffic restricted
  • 1.4.1 1.4.1 NSCs between trusted and untrusted networks

SOC 2 · 5 controls

  • SOC2-CC6.1 CC6.1 Logical access security over protected information assets
  • SOC2-CC6.6 CC6.6 Protection against threats from outside the system boundary
  • SOC2-CC6.7 CC6.7 Restricting and protecting information in transmission, movement and removal
  • SOC2-CC7.1 CC7.1 Detecting configuration changes and new vulnerabilities
  • SOC2-CC8.1 CC8.1 Managing changes to procedures, software, data and infrastructure
  • NS-1 Establish network segmentation boundaries
  • NS-2 Secure cloud services with network controls

C5 (Germany) · 2 controls

  • C5-AM-03 Commissioning of Hardware
  • C5-COS-02 Security requirements for connections in the Cloud Service Provider's network
  • IRAP-CAF-2 Stage 2 - Define the assessment boundary

FedRAMP High · 1 control

  • CA-9 Internal System Connections

FedRAMP Moderate · 1 control

  • CA-9 Internal System Connections

ISO 27001:2022 · 1 control

  • 8.22 Segregation of networks

ISO 27002:2022 · 1 control

  • 8.22 Segregation of networks
  • NIST-CSF-PR.IR-01 Networks and environments are protected from unauthorized logical access and usage
  • CA-9 CA-9 Internal System Connections
  • CA-9 CA-9 Internal System Connections
  • CA-9 CA-9 Internal System Connections

Every mapping shown was judged rather than inferred from wording similarity, and the ones that failed review are published too. See the coverage reports and what was rejected.

Other controls in CA - Assessment, Authorization, and Monitoring

You are reading one control. How much of NIST SP 800-53 Rev 5 have you already done?

NIST SP 800-53 Rev 5 NIST800-CA-9 is one control. If you already hold one of the frameworks below, a reviewed crosswalk already says how much of NIST SP 800-53 Rev 5 your existing evidence covers. Hold ISO 27001:2022 and 163 of 1014 NIST SP 800-53 Rev 5 controls already carry evidence.

Each report names every control your existing framework evidences, every one it does not, the reasoning behind each claim, and the claims that were argued against and rejected. 342 were rejected on the ISO 27001:2022 pair alone.

Query this from an agent

The graph holds this control, the 31 it maps to, and the evidence behind each claim, over MCP and REST.