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Interactive Explainer

Istio Ingress & Egress Gateways

Configure Istio Gateways for north-south traffic: TLS termination, SNI routing, and external service egress control.

🎯Key Takeaways
Gateway = edge proxy config (port, protocol, TLS)
VirtualService binds to Gateway for routing rules
Egress Gateway: controlled outbound for compliance/auditing

Istio Ingress & Egress Gateways

Configure Istio Gateways for north-south traffic: TLS termination, SNI routing, and external service egress control.

~1 min read
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What you'll learn
  • Gateway = edge proxy config (port, protocol, TLS)
  • VirtualService binds to Gateway for routing rules
  • Egress Gateway: controlled outbound for compliance/auditing

Gateway Configuration

Istio Gateway configures the edge proxy. Ingress Gateway: terminates TLS (HTTPS), routes by SNI/host. Combine with VirtualService for routing rules. Egress Gateway: forward outbound traffic through a single controlled exit point. Unlike Kubernetes Ingress, routing rules are separate in VirtualServices (more flexible).

Key takeaways

  • Gateway = edge proxy config (port, protocol, TLS)
  • VirtualService binds to Gateway for routing rules
  • Egress Gateway: controlled outbound for compliance/auditing

Related concepts

Explore topics that connect to this one.

  • Istio VirtualServices: Traffic Routing
  • Istio ServiceEntries & Egress Control
  • ingress controllers

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