FedRAMP High
AC - Access Control

FedRAMP High AC-20: Use of External Systems

Establish terms and conditions for use of external systems; prohibit unless authorized.

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

What else in your programme already covers this

This control maps to 36 controls across 20 other frameworks. If you already hold one of them, the evidence you collected for it is the starting point here rather than new work.

PCI DSS 4.0 · 5 controls

  • 12.8.2 12.8.2 TPSP contracts acknowledging account data responsibility
  • 12.8.3 12.8.3 Due diligence before engaging TPSPs
  • 12.8.4 12.8.4 Annual monitoring of TPSP compliance status
  • 12.8.5 12.8.5 Responsibility allocation between entity and TPSPs
  • 8.2.7 8.2.7 Third-party remote access accounts controlled

SOC 2 · 5 controls

  • SOC2-CC6.2 CC6.2 Registering and authorising users before issuing credentials
  • SOC2-CC6.6 CC6.6 Protection against threats from outside the system boundary
  • SOC2-CC9.2 CC9.2 Assessing and managing vendor and business partner risk
  • SOC2-P6.4 P6.4 Privacy commitments from vendors and third parties
  • SOC2-P6.5 P6.5 Vendor commitments to report unauthorised disclosures

ISO 27001:2022 · 3 controls

  • 5.19 Information security in supplier relationships
  • 5.20 Addressing information security within supplier agreements
  • 5.23 Information security for use of cloud services

ISO 27002:2022 · 3 controls

  • 5.19 Information security in supplier relationships
  • 5.20 Addressing information security within supplier agreements
  • 5.23 Information security for use of cloud services
  • ANSSI-HYG-07 Authorise Network Connection Only for Managed Equipment
  • ANSSI-HYG-25 Secure Dedicated Network Interconnections with Partners
  • ASBv3-PA-8 Determine access process for cloud provider support
  • NS-2 Secure cloud services with network controls

UK Cyber Essentials · 2 controls

  • SEC03-BP09 Share resources securely with a third party
  • MYHR-CUD-4 Records not held or taken outside Australia

C5 (Germany) · 1 control

  • C5-SSO-01 Policies and instructions for controlling and monitoring third parties

CIS Controls v8 · 1 control

  • CIS-13.5 Manage Access Control for Remote Assets

CMMC 2.0 · 1 control

NIST SP 800-172 · 1 control

  • 3.1.2e Restrict Access to Organization-Owned, Provisioned, or Issued Information Resources
  • AC-20 AC-20 Use of External Systems
  • AC-20 AC-20 Use of External Systems
  • AC-20 AC-20 Use of External Systems

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 AC - Access Control

You are reading one control. How much of FedRAMP High have you already done?

FedRAMP High AC-20 is one control. If you already hold one of the frameworks below, a reviewed crosswalk already says how much of FedRAMP High your existing evidence covers. Hold C5 (Germany) and 119 of 410 FedRAMP High 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. 6 were rejected on the C5 (Germany) pair alone.

Query this from an agent

The graph holds this control, the 36 it maps to, and the evidence behind each claim, over MCP and REST.