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Infrastructure Security Architecture / 25-30% of exam

L13.Network Security, SSE & Private Access

Course outlineLesson 13 of 18

Evaluate segmentation, inspection, private connectivity, secure web gateway, and identity-aware access designs across branch, remote, cloud, and multitenant environments.

Design from flows and trust boundaries

Document users, workloads, destinations, protocols, data sensitivity, inspection needs, latency, and failure behavior. Network controls should support explicit access decisions and limit lateral movement, not simply create a large trusted internal zone.

Combine cloud network controls

Use segmentation, security groups, firewalls, web application firewalls, DDoS protection, private endpoints, DNS controls, and centralized routing where their control objectives apply. Avoid unnecessary traffic hairpins and single points of failure.

Evaluate Security Service Edge

Microsoft Entra Internet Access can provide secure web gateway capabilities and access controls for internet and Microsoft services, including cross-tenant scenarios. Microsoft Entra Private Access provides identity-aware access to private applications and resources without granting broad network access.

Plan transitions

SSE adoption affects clients, connectors, routing, DNS, Conditional Access, inspection, logging, and support processes. Pilot representative applications, define fallback behavior, and verify that legacy protocols and service accounts have an explicit migration path.

RequirementLikely pattern
Private application accessEntra Private Access
Govern internet destinationsEntra Internet Access
Protect public web appsWAF and DDoS controls
Limit workload lateral movementSegmentation and workload policy
Exam Focus Points
  • Evaluate network designs from documented flows, trust boundaries, and failure behavior
  • Entra Internet Access provides secure web gateway capabilities
  • Entra Private Access provides identity-aware access to private resources
  • SSE migration requires client, connector, routing, DNS, logging, and fallback planning
Knowledge Check

1. A remote contractor needs one private web application but should not receive network-level access. What is the best design direction?