Session
Designing Azure Egress: NAT, Inspection, and Routing Trade-offs
Outbound connectivity is an architectural decision—not simply a route to the internet. Azure workloads may need predictable source addresses, traffic inspection, access to platform services, or tightly controlled destinations. Those requirements do not all call for the same design.
This session compares explicit outbound-connectivity patterns using Azure NAT Gateway, Azure Firewall, and secured Virtual WAN hubs. We’ll distinguish address translation from traffic inspection, examine when centralised egress is justified, and explain how routing determines which controls traffic actually encounters.
We’ll also clarify the scope of Azure’s default outbound-access changes: why new and existing environments can behave differently, and how to assess workloads before changing their connectivity. Worked scenarios will expose common mistakes, including assuming a NAT gateway filters destinations or that a deployed firewall necessarily inspects every outbound path.
Attendees will leave able to:
- Choose an egress pattern based on connectivity, inspection, cost, and operational requirements.
- Trace the intended outbound path and identify where translation and filtering occur.
- Plan a transition to explicit outbound connectivity without overlooking essential dependencies.
Audience: Azure engineers, networking professionals, and cloud security architects.
Level: Intermediate.
Duration: 45 minutes.
Prerequisites: Familiarity with Azure VNets, route tables, and basic NAT concepts.
Format: Slides, traffic-path diagrams, and worked scenarios.
Chris Hailes
Microsoft MVP | Cloud Technology Strategist | Azure Networking, Security & Platform Architecture
Sydney, Australia
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