Segmentation Review (NET-002-R009) - NET-002

Requirement Details & Guidance

NET-002-R009 · NET-002

Why This Requirement Exists

Supports segmentation zones, firewall rules, traffic controls, critical-asset isolation by ensuring that segmentation review is governed and implemented consistently, reducing unauthorized access, network attack exposure, service disruption, and security control gaps.

Implementation Guidance

Document the required control objective and scope; assign an accountable owner; define approved standards and configurations; implement the control across applicable network environments; integrate it with monitoring and change management; retain evidence; and review effectiveness periodically. For segmentation review, define and enforce the required security boundaries and segmentation.

Practical Application & Audit Readiness

NET-002-R009 · Field Guidance

Business Examples

Common Audit Findings

Common Mistakes

Best Practices & Ownership

NET-002 · Recommended Approach

Recommended Practices

Typical Owner

Cross-Mapped Regulatory Frameworks

Harmonized Control Mappings

FRAMEWORK CODE	FRAMEWORK NAME & DETAILS	FAMILY / CATEGORY	VERSION	ACTION
CIS-V8	CIS Controls CIS Controls are a prioritized set of cybersecurit... Clause: Control 13 – Network Monitoring and Defense: 13.4 – Perform Traffic Filtering Between Network Segments	CIS Best Practice	vv8	View →
COBIT2019	COBIT COBIT is an enterprise governance and management f... Clause: 4.4 – Deliver, Service and Support (DSS) > DSS05 – Managed Security Services > DSS05.02 – Manage network and connectivity security.	COBIT Governance Framework	v2019	View →
DORA	Digital Operational Resilience Act The EU Digital Operational Resilience Act establis... Clause: Article 9(4)(b) – Network and infrastructure management structure and techniques Article 9(2) – ICT security policies, procedures, protocols and tools for resilience and data security	EU Regulation	vCurrent	View →
GDPR	General Data Protection Regulation (GDPR) The General Data Protection Regulation is a bindin... Clause: Article 32(1)(b) – Confidentiality, integrity, availability and access resilience	EU Regulation	vCurrent	View →
HIPAA	Health Insurance Portability and Accountability Act HIPAA is a U.S. federal law supported by implement... Clause: § 164.312(a)(2)(vi) Network segmentation; § 164.308(a)(10)(ii)(E) Network segmentation	US Law	vCurrent	View →
IRDAI	IRDAI Information & Cyber Security Guidelines IRDAI information and cyber-security requirements... Clause: §2.11-3.3 – Network Management	India Guideline	vLatest	View →
ISO27002	ISO/IEC 27002 ISO/IEC 27002 is a guidance standard containing a... Clause: 8.22 – Segregation of networks	ISO Standard	v2022	View →
NIS2	NIS2 Directive The NIS2 Directive establishes EU-wide cybersecuri... Clause: Article 21(2)(a) – Policies on risk analysis and information system security	EU Directive	vCurrent	View →
NIST-CSF	NIST Cybersecurity Framework (CSF) The NIST Cybersecurity Framework provides high-lev... Clause: PR.IR – Technology Infrastructure Resilience \| PR.IR-01 – Networks and environments are protected from unauthorized logical access and usage	NIST Framework	v2	View →
NIST80053	NIST SP 800-53 NIST SP 800-53 Rev. 5 presents control families, i... Clause: 3.18 – SYSTEM AND COMMUNICATIONS PROTECTION; SC-7 – BOUNDARY PROTECTION, SC-32 – SYSTEM PARTITIONING	NIST Control Catalog	vRev. 5	View →
NPCI-ISR	NPCI Information Security Requirements NPCI information-security requirements define cont... Clause: Security Measures / Controls; Network Security – Network Segmentation	India Standard	vLatest	View →
PCI-DSS	PCI DSS PCI DSS is an industry security standard maintaine... Clause: 1.4.1 – NSCs are implemented between trusted and; 1.4.4 – System components that store cardholder; 11.4.5 – If segmentation is used to isolate the CDE	PCI Standard	v4	View →
RBI-CSF	RBI Cyber Security Framework / Master Directions RBI cyber-security requirements and directions set... Clause: 4) Network Management and Security – 4.10 Layered boundary defences, firewalls/proxies/DMZ/IPS/IDS and traffic filtering	India Regulation	vLatest	View →
SEBI-CSCRF	SEBI Cyber Security & Cyber Resilience Framework SEBI’s Cybersecurity and Cyber Resilience Framewor... Clause: 3.4 PR.IP: Information Protection Processes and Procedures; 3.1 PR.AA: Identity Management, Authentication, and Access Control	India Regulation	vLatest	View →
SOC2	SOC 2 Trust Services Criteria SOC 2 is an independent examination and reporting... Clause: CC6.1 – Logical and Physical Access Controls – The entity implements logical access security software, infrastructure, and architectures over protected information assets to protect them from security events to meet the entity's objectives. CC6.6 – Logical and Physical Access Controls – The entity implements logical access security measures to protect against threats from sources outside its system boundaries. CC4.1 – Monitoring of Controls – COSO Principle 16: The entity selects, develops, and performs ongoing and/or separate evaluations to ascertain whether the components of internal control are present and functioning.	AICPA Audit Framework	vLatest	View →

Parent Domain Context

Governance Domain Baseline

Domain Name:

Network Security (NET)

Purpose:

To secure the organization's network infrastructure and prevent unauthorized access.

Scope:

Enterprise

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Parent Control Context

Control Baseline

Control Name:

Network Segmentation & Traffic Control (NET-002)

Summary:

Establishes network segmentation, security zones, firewall rule management, traffic control policies, critical asset isolation, and monitoring for regulated network communications.

Business Description:

Establish and maintain network segmentation, security zones, firewall controls, and traffic management mechanisms to isolate critical assets and regulate network communications.

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