Bor node
| Name | Port | Tags | Description |
|---|---|---|---|
| Network Listening Port | 30303 | Public | Port used by Bor for peer connections and synchronization. |
| RPC Server | 8545 | Can be Public, Internal | RPC port for sending transactions and fetching data. Heimdall uses this port to obtain Bor headers. |
| WebSocket Server | 8546 | Can be Public, Internal | WebSocket port for real-time updates. |
| GraphQL Server | 8547 | Internal | GraphQL port for querying data. |
| Prometheus Server | 9091 | Can be Public, Monitoring | Prometheus APIs for Grafana data source. Can be mapped to ports 80/443 via an Nginx reverse proxy. |
| Grafana Server | 3001 | Can be Public, Monitoring | Grafana web server. Can be mapped to ports 80/443 via an Nginx reverse proxy. |
| Pprof Server | 7071 | Internal, Monitoring | Pprof server for collecting Bor metrics. |
| UDP Discovery | 30301 | Can be Public, Internal | Default port for Bootnode peer discovery. |
Heimdall node
Heimdall runs on CometBFT and the Cosmos SDK, so its ports differ from Bor’s.| Name | Port | Tags | Description |
|---|---|---|---|
| P2P Port | 26656 | Public | CometBFT peer-to-peer port for connecting to other Heimdall nodes and synchronization. |
| RPC Server | 26657 | Can be Public, Internal | CometBFT RPC endpoint for queries and submitting transactions. Bound to localhost by default. |
| REST API | 1317 | Can be Public, Internal | Cosmos SDK REST (LCD) API for querying Heimdall state over HTTP. |
| gRPC Server | 9090 | Internal | Cosmos SDK gRPC endpoint for querying Heimdall state. Bound to localhost by default. |
| Prometheus Server | 26660 | Can be Public, Monitoring | CometBFT Prometheus metrics endpoint for monitoring. |
| Pprof Server | 6060 | Internal, Monitoring | Pprof server for collecting Heimdall runtime metrics. |