Paul Bryant • 8/11/2026

The NSX Microsegmentation Vault: Designing Distributed Firewall Policy Around Applications, Not Perimeters

This article discusses NSX microsegmentation, proposing a 'vault' mental model where each workload is a separately protected compartment, unlike traditional perimeter-based security. It emphasizes that NSX Distributed Firewall provides enforcement but success depends on accurate application discovery, groups/tags, narrowly scoped policy, staged enforcement, and day-2 operations. The article also clarifies that microsegmentation alone doesn't guarantee full protection, advocating for a defense-in-depth approach including identity, encryption, observability, and governance.

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#Network Security #Zero Trust #Nsx