CMMC 2.0 AC.L2-3.1.20: External Connections

What else in your programme already covers this

This control maps to 49 controls across 22 other frameworks. If you already hold one of them, the evidence you collected for it is the starting point here rather than new work.

ISO 27001:2022 · 5 controls

5.23 Information security for use of cloud services
8.20 Networks security
8.21 Security of network services
8.22 Segregation of networks
8.23 Web filtering

ISO 27701:2019 · 5 controls

6.10.1 Network security management
6.10.2 Information transfer
6.12.1 Information security in supplier relationships
6.12.2 Supplier service delivery management
6.9.6 Technical vulnerability management

AWS Well-Architected Security Pillar · 3 controls

SEC03-BP07 Analyze public and cross-account access
SEC03-BP09 Share resources securely with a third party
SEC05-BP02 Control traffic flow within your network layers

C5 (Germany) · 3 controls

C5-COS-02 Security requirements for connections in the Cloud Service Provider's network
C5-COS-04 Cross-network access
C5-SSO-01 Policies and instructions for controlling and monitoring third parties

NIST SP 800-161 Rev 1 · 3 controls

161R1-AC-20 Use of External Systems
161R1-CA-3 Information Exchange
161R1-SA-9 External System Services

NIST SP 800-171 Rev 3 · 3 controls

03.01.20 Use of External Systems
03.12.05 Information Exchange
03.16.03 External System Services

ANSSI Guide d'hygiene informatique (42 mesures, v2.0) · 2 controls

ANSSI-HYG-07 Authorise Network Connection Only for Managed Equipment
ANSSI-HYG-25 Secure Dedicated Network Interconnections with Partners

Azure Security Benchmark · 2 controls

ASBv3-PA-8 Determine access process for cloud provider support
NS-2 Secure cloud services with network controls

CIS Controls v8 · 2 controls

CIS-13.4 Perform Traffic Filtering Between Network Segments
CIS-4.4 Implement and Manage a Firewall on Servers

Cloud Security Alliance Cloud Controls Matrix (CCM) v4.0.1 · 2 controls

CCM-IVS-03 Network Security
CCM-UEM-14 Third-Party Endpoint Security Posture

FedRAMP High · 2 controls

AC-20 Use of External Systems
AC-20(1) Limits on Authorized Use

FedRAMP Moderate · 2 controls

AC-20 Use of External Systems
AC-20(1) Limits on Authorized Use

ISO 27002:2022 · 2 controls

5.23 Information security for use of cloud services
8.20 Networks security

NIS2 Directive · 2 controls

Art.21.2.d Supply chain security, covering the relationship with each direct supplier and service provider
Art.21.3 Take account of supplier-specific vulnerabilities and of Union coordinated supply chain risk assessments

NIST Cybersecurity Framework 2.0 · 2 controls

NIST-CSF-DE.CM-06 External service provider activities and services are monitored to find potentially adverse events
NIST-CSF-PR.IR-01 Networks and environments are protected from unauthorized logical access and usage

NIST SP 800-53 Rev 5 · 2 controls

NIST800-AC-20 AC-20 Use of External Systems
NIST800-CA-3 CA-3 Information Exchange

SOC 2 · 2 controls

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

ASD Strategies to Mitigate Cyber Security Incidents · 1 control

ASD37-08 Deny direct internet connectivity (Excellent)

NIST SP 800-172 · 1 control

3.1.2e Restrict Access to Organization-Owned, Provisioned, or Issued Information Resources

PCI DSS 4.0 · 1 control

12.8.2 12.8.2 TPSP contracts acknowledging account data responsibility

UK Cyber Essentials · 1 control

CE-SCOPE.2 Cloud Services in Scope

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.

You are reading one control. How much of CMMC 2.0 have you already done?

CMMC 2.0 AC.L2-3.1.20 is one control. If you already hold one of the frameworks below, a reviewed crosswalk already says how much of CMMC 2.0 your existing evidence covers. Hold FedRAMP Moderate and 108 of 110 CMMC 2.0 controls already carry evidence.

If you hold FedRAMP Moderate98.2% covered · 2 gaps If you hold NIST SP 800-171 Rev 394.5% covered · 6 gaps If you hold NIST SP 800-53 Rev 585.5% covered · 16 gaps If you hold ISO 27001:202279.1% covered · 23 gaps If you hold ISO 27002:202267.3% covered · 36 gaps If you hold CIS Controls v864.5% covered · 39 gaps

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. 1 were rejected on the FedRAMP Moderate pair alone.

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