Simplifying Egress Routing to Wildcard Destinations
Istio now supports wildcard ServiceEntry with DYNAMIC_DNS resolution, allowing sidecars to route traffic directly to wildcard HTTPS destinations while simplifying egress configuration.
Overview
Controlling egress traffic is a common requirement in service mesh deployments. Many organizations configure their mesh to allow only explicitly registere...
This update reflects a broader trend in service mesh evolution: balancing security with usability. The shift from egress gateways to direct sidecar routing addresses a real pain point—managing dynamic external services—but raises questions about trade-offs. While the new approach reduces complexity, it relies heavily on SNI inspection, which assumes TLS handshakes are unobstructed and hostnames are accurately transmitted. What happens if applications use IP addresses or non-standard TLS implemen...
