PCI DSS v4.0 Compliance for Network Infrastructure
PCI DSS v4.0 introduces significant changes to network security controls, including the new customized approach and updated requirements for network segmentation, firewall rules, and secure configurations. ConnectMyAssets automates the network-level controls in Requirements 1, 2, 10, and 11 that protect cardholder data environments.
Why PCI DSS v4.0 Changes Network Security
PCI DSS v4.0 replaced v3.2.1 on March 31, 2024, with future-dated requirements becoming mandatory by March 31, 2025. Network controls are foundational to cardholder data protection.
Requirement 1, Network Security Controls
Requirement 1 (formerly "Install and maintain a firewall") now mandates "network security controls" (NSCs), a broader term covering firewalls, cloud security groups, NDR, and SDN policies. All NSC rulesets must be reviewed every six months (1.2.7) and documented with business justification for every allow rule.
Requirement 2, Secure Configurations
Requirement 2 requires changing vendor-supplied defaults, removing unnecessary services, and configuring all system components securely. New sub-requirement 2.2.7 mandates encryption of all non-console administrative access. Configuration standards must be reviewed when new vulnerabilities are identified.
Requirement 10, Logging & Monitoring
Requirement 10 mandates logging all access to system components and cardholder data. New in v4.0: automated mechanisms to detect and alert on security event log failures (10.7.2) and review of all other log types at least once every 12 months (10.4.1.1).
Requirement 11, Security Testing
Requirement 11 requires regular security testing including internal and external vulnerability scans, penetration testing, and network intrusion detection. New in v4.0: internal vulnerability scans must be authenticated (11.3.1.2) and change detection mechanisms must run weekly on payment page scripts (11.6.1).
PCI DSS v4.0 Network Capabilities
Purpose-built features that map directly to PCI DSS v4.0 network security requirements.
NSC Ruleset Review & Documentation (1.2.7)
Automatically inventory all firewall and NSC rules, flag rules without business justification, identify overly permissive "any/any" rules, and track six-month review cycles. Generate Requirement 1.2.7 evidence showing ruleset review completion and rule-by-rule documentation.
Secure Configuration Baselines (2.2)
Define and enforce PCI DSS-compliant configuration standards for every network device class. Detect vendor defaults, unnecessary services, insecure protocols, and unencrypted admin access. Satisfy Requirement 2.2 with automated baseline compliance checks.
CDE Segmentation Validation (1.4)
Validate cardholder data environment (CDE) segmentation by analyzing firewall rules, ACLs, VLAN configurations, and routing tables. Verify that traffic between trusted and untrusted networks is properly controlled per Requirement 1.4 and detect segmentation leaks.
Configuration Change Logging (10.2)
Capture and log every network configuration change with user identification, timestamp, affected device, and diff comparison. Meet Requirement 10.2 audit log requirements with immutable, tamper-evident records that include before/after configuration states.
Network Vulnerability Assessment (11.3)
Identify known firmware vulnerabilities, insecure protocol configurations (SSLv3, TLS 1.0/1.1, SNMPv1/v2), and missing security patches across your network. Support Requirement 11.3 vulnerability scanning with authenticated configuration analysis.
QSA-Ready Compliance Reports
Generate pre-formatted evidence packages organized by PCI DSS v4.0 requirement number. Provide your QSA or ISA with structured documentation for Requirements 1, 2, 10, and 11 that maps directly to SAQ and ROC reporting templates.
Three Steps to PCI DSS v4.0 Network Compliance
Assess, Scope & Gap Analysis
Connect your in-scope network devices and run an automated PCI DSS v4.0 gap assessment. ConnectMyAssets identifies your CDE boundaries, validates segmentation controls, scans configurations against Requirements 1 and 2, and produces a prioritized remediation plan with estimated effort per finding.
Implement, Harden & Enforce Controls
Deploy PCI DSS-compliant configuration templates, enforce secure defaults, disable unnecessary services, and establish rule review workflows. Configure change logging per Requirement 10, implement NSC rule documentation per Requirement 1, and validate CDE segmentation.
Maintain, Continuous Validation & Audit Support
Automate quarterly internal scans, six-month NSC rule reviews, and continuous configuration drift detection. Generate evidence packages ahead of annual assessments. Track the status of future-dated v4.0 requirements to ensure readiness before enforcement deadlines.
Related Platform Features
PCI DSS v4.0 Network FAQ
Common questions about PCI DSS v4.0 compliance for network infrastructure.
What are the key PCI DSS v4.0 changes for network security?
Key changes include: Requirement 1 now uses "Network Security Controls" instead of "firewalls" to cover modern architectures (cloud security groups, SDN). New sub-requirements mandate inbound and outbound traffic restrictions (1.3.1/1.3.2), six-month rule reviews with business justification (1.2.7), encrypted non-console admin access (2.2.7), and authenticated internal vulnerability scans (11.3.1.2).
When must organizations comply with PCI DSS v4.0?
PCI DSS v3.2.1 was retired on March 31, 2024, all assessments after that date must use v4.0. Future-dated requirements (identified as best practices until March 31, 2025) became mandatory on March 31, 2025. Organizations should verify compliance with all v4.0 requirements including these formerly future-dated items.
What is the PCI DSS v4.0 Customized Approach?
The Customized Approach is new in v4.0 and allows organizations to meet the security objective of a requirement using alternative controls. Instead of following the defined approach (prescriptive controls), entities document their custom control, perform a targeted risk analysis, and have their QSA validate that the objective is met. This is useful for modern network architectures where traditional controls may not apply directly.
How often must firewall/NSC rules be reviewed under PCI DSS v4.0?
Requirement 1.2.7 mandates that NSC rulesets are reviewed at least once every six months. Each review must confirm that rules are still needed, documented with business justification, and approved by authorized personnel. Rules for traffic to and from the CDE must be particularly scrutinized. ConnectMyAssets automates this review cycle with scheduled assessments and rule-level documentation.
What network segmentation does PCI DSS require?
While PCI DSS does not strictly require network segmentation, it is strongly recommended to reduce the scope of the CDE assessment. Requirement 1.4 specifies that NSCs must be implemented between trusted and untrusted networks. If segmentation is used to reduce scope, Requirement 11.4.5 requires segmentation penetration testing every six months and after any changes to segmentation controls.
How does ConnectMyAssets help with PCI DSS v4.0 Requirement 2?
ConnectMyAssets addresses Requirement 2 by scanning network device configurations for vendor-supplied defaults (2.2.2), identifying unnecessary services and functions (2.2.4), detecting insecure protocols for non-console admin access (2.2.7), and enforcing configuration standards with drift detection. It maintains a documented configuration baseline for each device class as required by 2.2.1.
Achieve PCI DSS v4.0 Network Compliance
See how ConnectMyAssets automates PCI DSS v4.0 network controls and generates QSA-ready evidence for your next assessment.