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1.3.2. Zero Trust in Practice
Traditional security trusted everything inside the network perimeter. Zero Trust assumes breach and verifies every request.
💡 First Principle: Zero Trust means never trust, always verify—regardless of where a request originates. In Azure, this translates to private connectivity (no public exposure), micro-segmentation (NSGs on everything), and identity-based access.
Zero Trust Networking in Azure:
| Principle | Azure Implementation |
|---|---|
| Verify explicitly | Microsoft Entra ID for all access |
| Use least privilege | NSG rules allow only required traffic |
| Assume breach | Micro-segmentation, logging everywhere |
Practical Example: Instead of exposing a database with a public IP and firewall rules, use Private Endpoints. The database has no public attack surface—traffic flows over Microsoft's backbone, never the internet.
⚠️ Exam Trap: Private Endpoints don't automatically disable public access. You must explicitly turn off public access on the resource.
Written byAlvin Varughese
Founder•15 professional certifications