Curated port reference

Port 4317: OpenTelemetry OTLP/gRPC

OpenTelemetry OTLP/gRPC commonly uses port 4317 over TCP. Review its purpose, traffic direction and operational security considerations.

4317TCP

OpenTelemetry OTLP/gRPC

Default gRPC transport endpoint for OpenTelemetry Protocol data.

Typical use

OpenTelemetry OTLP/gRPC endpoints in environments where this service is explicitly configured.

Traffic direction

Client to server

Security considerations

Use TLS and authentication, restrict collectors and exporters, and prevent sensitive telemetry leakage.