Curated port reference

Port 4318: OpenTelemetry OTLP/HTTP

OpenTelemetry OTLP/HTTP commonly uses port 4318 over TCP. Review its purpose, traffic direction and operational security considerations.

4318TCP

OpenTelemetry OTLP/HTTP

Default HTTP transport endpoint for OpenTelemetry Protocol data.

Typical use

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

Traffic direction

Client to server

Security considerations

Use HTTPS and authentication, restrict collectors and exporters, and validate telemetry volume limits.