Public-Access System Separation

frameworkCMMC Level 2 sectionSC System and Communications Protection csf 2.0DE.CM-01 PR.DS-01 PR.DS-02 PR.DS-10 PR.IR-01 topicsFirewall / Net Seg frameworks6 3 0

Official textImplement subnetworks for publicly accessible system components that are physically or logically separated from internal networks.NIST SP 800-171 Rev 2 requirement, the basis of the CMMC Level 2 practice (public domain)

gap from CMMC → gap to CMMC →

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Equivalents of SC.L2-3.13.5 in other frameworks
Framework	Requirement	Title	Link	Source / reason
NIST CSF 2.0	ID.AM-03 PR.IR-01	Representations of the organization's authorized network communication and internal and external network data flows are maintained; Networks and environments are protected from unauthorized logical access and usage	Crosswalk	Same topic: Firewall / Net Seg 4 loosely related (not mappings) DE.CM-01 Networks and network services are monitored to find potentially adverse events Loosely related Only shares CSF DE.CM-01: related, not a mapping PR.DS-01 The confidentiality, integrity, and availability of data-at-rest are protected Loosely related Only shares CSF PR.DS-01: related, not a mapping PR.DS-02 The confidentiality, integrity, and availability of data-in-transit are protected Loosely related Only shares CSF PR.DS-02: related, not a mapping PR.DS-10 The confidentiality, integrity, and availability of data-in-use are protected Loosely related Only shares CSF PR.DS-10: related, not a mapping
ISO 27001	A.8.20 A.8.21 A.8.22	Networks security; Security of network services…	Crosswalk	Same topic: Firewall / Net Seg 34 loosely related (not mappings) A.5.3 Segregation of duties Loosely related Only shares CSF PR.DS-01, PR.DS-02, PR.DS-10: related, not a mapping A.5.10 Acceptable use of information and other associated assets Loosely related Only shares CSF PR.DS-01, PR.DS-02, PR.DS-10: related, not a mapping A.5.13 Labelling of information Loosely related Only shares CSF PR.DS-01, PR.DS-02, PR.DS-10: related, not a mapping A.5.14 Information transfer Loosely related Only shares CSF PR.DS-01, PR.DS-02, PR.DS-10: related, not a mapping A.5.15 Access control Loosely related Only shares CSF PR.DS-01, PR.DS-02, PR.DS-10: related, not a mapping A.6.1 Screening Loosely related Only shares CSF PR.DS-01, PR.DS-02, PR.DS-10: related, not a mapping A.6.2 Terms and conditions of employment Loosely related Only shares CSF PR.DS-01, PR.DS-02, PR.DS-10: related, not a mapping A.6.5 Responsibilities after termination or change of employment Loosely related Only shares CSF PR.DS-01, PR.DS-02, PR.DS-10: related, not a mapping …and 26 more in the downloads
CIS v8.1	CIS 12.2 CIS 4.4 CIS 4.5 CIS 12.3 CIS 12.4 CIS 12.6 CIS 13.4 CIS 13.9	Establish and Maintain a Secure Network Architecture; Implement and Manage a Firewall on Servers…	Crosswalk	Same topic: Firewall / Net Seg 29 loosely related (not mappings) CIS 3.12 Segment Data Processing and Storage Based on Sensitivity Loosely related Only shares CSF PR.DS-01, PR.DS-02, PR.DS-10, PR.IR-01: related, not a mapping CIS 3.10 Encrypt Sensitive Data in Transit Loosely related Only shares CSF PR.DS-02: related, not a mapping CIS 3.11 Encrypt Sensitive Data at Rest Loosely related Only shares CSF PR.DS-01: related, not a mapping CIS 13.1 Centralize Security Event Alerting Loosely related Only shares CSF DE.CM-01: related, not a mapping CIS 3.1 Establish and Maintain a Data Management Process Loosely related Only shares CSF PR.DS-01, PR.DS-02, PR.DS-10: related, not a mapping CIS 3.4 Enforce Data Retention Loosely related Only shares CSF PR.DS-01, PR.DS-02, PR.DS-10: related, not a mapping CIS 3.5 Securely Dispose of Data Loosely related Only shares CSF PR.DS-01, PR.DS-02, PR.DS-10: related, not a mapping CIS 3.13 Deploy a Data Loss Prevention Solution Loosely related Only shares CSF PR.DS-01, PR.DS-02, PR.DS-10: related, not a mapping …and 21 more in the downloads
SOC 2	CC6.6	Protection against threats from outside system boundaries	Editorial	Same topic: Firewall / Net Seg (editorial pick) 7 loosely related (not mappings) C1.2 Disposing of confidential information Loosely related Only shares CSF PR.DS-01, PR.DS-02, PR.DS-10: related, not a mapping CC6.5 Protection of data when assets are disposed of Loosely related Only shares CSF PR.DS-01, PR.DS-02, PR.DS-10: related, not a mapping CC6.7 Restricting transmission, movement and removal of information Loosely related Only shares CSF PR.DS-01, PR.DS-02, PR.DS-10: related, not a mapping CC6.1 Logical access security over information assets Loosely related Only shares CSF PR.DS-01, PR.DS-02: related, not a mapping CC6.8 Preventing or detecting unauthorized or malicious software Loosely related Only shares CSF PR.DS-02: related, not a mapping CC7.2 Monitoring system components for anomalies Loosely related Only shares CSF DE.CM-01: related, not a mapping CC9.2 Managing vendor and business partner risk Loosely related Only shares CSF PR.IR-01: related, not a mapping
PCI DSS	1.2.3 1.2.1 1.3.1 1.4.1	Accurate network diagram maintained; Configuration standards for network security controls…	Crosswalk	Same topic: Firewall / Net Seg 35 loosely related (not mappings) 1.2.4 Accurate account-data flow diagram maintained Loosely related Only shares CSF DE.CM-01, PR.IR-01: related, not a mapping 10.2.1 Audit logs enabled and active Loosely related Only shares CSF DE.CM-01, PR.IR-01: related, not a mapping 11.2.1 Wireless access points detected and unauthorised ones handled Loosely related Only shares CSF DE.CM-01, PR.IR-01: related, not a mapping 2.3.1 Wireless vendor defaults changed Loosely related Only shares CSF PR.DS-02: related, not a mapping 3.2.1 Account data storage minimised, with retention and disposal Loosely related Only shares CSF PR.DS-10: related, not a mapping 3.3.1 Sensitive authentication data not kept after authorisation Loosely related Only shares CSF PR.DS-01: related, not a mapping 3.4.1 PAN masked when displayed Loosely related Only shares CSF PR.DS-10: related, not a mapping 3.5.1 PAN rendered unreadable wherever stored Loosely related Only shares CSF PR.DS-01: related, not a mapping …and 27 more in the downloads
800-53	AC-4 SC-7	Information Flow Enforcement; Boundary Protection	Crosswalk	Same topic: Firewall / Net Seg 35 loosely related (not mappings) SC-4 Information in Shared System Resources Loosely related Only shares CSF PR.DS-01, PR.DS-02, PR.DS-10, PR.IR-01: related, not a mapping SI-4 System Monitoring Loosely related Only shares CSF DE.CM-01, PR.DS-01, PR.DS-02, PR.DS-10: related, not a mapping CA-3 Information Exchange Loosely related Only shares CSF PR.DS-01, PR.DS-02, PR.DS-10: related, not a mapping SC-13 Cryptographic Protection Loosely related Only shares CSF PR.DS-01, PR.DS-02, PR.DS-10: related, not a mapping SC-43 Usage Restrictions Loosely related Only shares CSF PR.DS-01, PR.DS-02, PR.DS-10: related, not a mapping SI-3 Malicious Code Protection Loosely related Only shares CSF PR.DS-01, PR.DS-02, PR.DS-10: related, not a mapping SI-7 Software, Firmware, and Information Integrity Loosely related Only shares CSF PR.DS-01, PR.DS-02, PR.DS-10: related, not a mapping AC-2 Account Management Loosely related Only shares CSF DE.CM-01, PR.DS-10: related, not a mapping …and 27 more in the downloads
HIPAA	§164.308(a)(1)(ii)(D)§164.308(a)(3)§164.308(a)(3)(ii)(A)§164.308(a)(4)(ii)(A)	Information System Activity Review; Workforce Security…	Loosely related	No mapping. Only shares CSF DE.CM-01, PR.DS-01, PR.DS-02, PR.DS-10…: related, not a mapping +22 more loosely related (not mappings) §164.308(a)(4)(ii)(B) Access Authorization Loosely related Only shares CSF DE.CM-01, PR.DS-10, PR.IR-01: related, not a mapping §164.308(b)(1) Business Associate Contracts and Other Arrangements Loosely related Only shares CSF PR.DS-01, PR.DS-02, PR.DS-10: related, not a mapping §164.308(b)(4) Written Contract or Other Arrangement Loosely related Only shares CSF PR.DS-01, PR.DS-02, PR.DS-10: related, not a mapping §164.312(a)(2)(i) Unique User Identification Loosely related Only shares CSF DE.CM-01, PR.DS-10, PR.IR-01: related, not a mapping …and 18 more in the downloads
GDPR	Art.5(1)(e)Art.5(1)(f)Art.32(1)(b)Art.32(1)(a)	Principles relating to processing of personal data; Principles relating to processing of personal data…	Loosely related	No mapping. Only shares CSF PR.DS-01, PR.DS-02, PR.DS-10: related, not a mapping +2 more loosely related (not mappings) Art.34(3)(a) Communication of a personal data breach to the data subject Loosely related Only shares CSF PR.DS-01, PR.DS-02: related, not a mapping Art.28(1) Processor Loosely related Only shares CSF PR.IR-01: related, not a mapping
NIS2	6.7 6.8	Network security; Network segmentation	Crosswalk	Same topic: Firewall / Net Seg 4 loosely related (not mappings) 9.1 Cryptography Loosely related Only shares CSF PR.DS-01, PR.DS-02: related, not a mapping 4.3 Crisis management Loosely related Only shares CSF DE.CM-01: related, not a mapping 6.9 Protection against malicious and unauthorised software Loosely related Only shares CSF DE.CM-01: related, not a mapping 12.3 Removable media policy Loosely related Only shares CSF PR.DS-01: related, not a mapping
Essential Eight	ISM-0109 ISM-1488 ISM-1906 ISM-1907	Event logs from workstations are analysed in a timely manner to detect cyber security…; Microsoft Office macros in files originating from the internet are blocked…	Loosely related	No mapping. Only shares CSF DE.CM-01, PR.DS-02: related, not a mapping
DORA	Art.9(4)(b)	Protection and prevention	Editorial	Same topic: Firewall / Net Seg (editorial pick) 11 loosely related (not mappings) Art.9(2) Protection and prevention Loosely related Only shares CSF PR.DS-01, PR.DS-02, PR.DS-10: related, not a mapping Art.9(3)(c) Protection and prevention Loosely related Only shares CSF PR.DS-01, PR.DS-02, PR.DS-10: related, not a mapping Art.9(3)(d) Protection and prevention Loosely related Only shares CSF PR.DS-01, PR.DS-02, PR.DS-10: related, not a mapping Art.9(3)(a) Protection and prevention Loosely related Only shares CSF PR.DS-01, PR.DS-02: related, not a mapping Art.9(4)(d) Protection and prevention Loosely related Only shares CSF PR.DS-01, PR.DS-02: related, not a mapping Art.9(1) Protection and prevention Loosely related Only shares CSF DE.CM-01: related, not a mapping Art.10(1) Detection Loosely related Only shares CSF DE.CM-01: related, not a mapping Art.10(2) Detection Loosely related Only shares CSF DE.CM-01: related, not a mapping …and 3 more in the downloads
CPS 234	Para 21 Para 23	Timely controls commensurate with risk and asset life-cycle; Detect and respond to incidents in a timely manner	Loosely related	No mapping. Only shares CSF PR.DS-01, PR.DS-02, PR.DS-10, DE.CM-01: related, not a mapping
Cyber Essentials	CE 1	Firewalls	Editorial	Same topic: Firewall / Net Seg (editorial pick) 1 loosely related (not mappings) CE 4 User Access Control Loosely related Only shares CSF PR.IR-01: related, not a mapping

Crosswalk a published crosswalk (NIST, ENISA, CIS, PCI SSC) makes the link · Editorial ControlMapping's judgement where no crosswalk exists; the reason is shown · Loosely related only shares a CSF 2.0 outcome: worth checking, not a mapping · No mapping in our data nothing mapped in our data; often new work, but check the coverage notes. How links are sourced.