Default Ports for Nodes

This guide provides a detailed list of default ports used across Polygon nodes, including Bor and Heimdall. Understanding these ports is crucial for network configuration and effective communication between nodes.

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

Name	Port	Tags	Description
Network Listening Port	30303	Public	Port used by Heimdall 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 Heimdall metrics.
UDP Discovery	30301	Can be Public, Internal	Default port for Bootnode peer discovery.