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Istio ServiceEntries & Egress Control

How to control outbound traffic with Istio ServiceEntries and Egress Gateways for compliance and auditing.

🎯Key Takeaways
ServiceEntry = register external service in the mesh
Egress Gateway = controlled, audited outbound traffic
Apply VirtualService + DestinationRule to external services

Istio ServiceEntries & Egress Control

How to control outbound traffic with Istio ServiceEntries and Egress Gateways for compliance and auditing.

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What you'll learn
  • ServiceEntry = register external service in the mesh
  • Egress Gateway = controlled, audited outbound traffic
  • Apply VirtualService + DestinationRule to external services

ServiceEntry Overview

ServiceEntry registers external services (outside the mesh) so Istio can apply traffic management. Example: register api.stripe.com as a ServiceEntry, then create a VirtualService to add retries and timeout. Egress Gateway: channel all outbound traffic through a dedicated proxy for auditing, rate limiting, and TLS origination.

Key takeaways

  • ServiceEntry = register external service in the mesh
  • Egress Gateway = controlled, audited outbound traffic
  • Apply VirtualService + DestinationRule to external services

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