Network Segmentation Testing for PCI DSS: A Practical Guide
PCI DSS compliance isn’t just about ticking off controls, but it’s more about how your infrastructure is architected and enforced. Few decisions influence the scope of compliance as directly as the implementation of network segmentation. Every additional system brought into the PCI scope adds operational friction: more logs to review, more systems to harden, more controls to audit. One misconfigured firewall rule or a forgotten DNS server can quietly pull half your network into scope.