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41 lines
2.1 KiB
41 lines
2.1 KiB
description: Ports must be exposed appropriately to enable communication
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# Configuring Ports
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Ports must be exposed appropriately to enable communication. An example port configuration for a Pantheon node on AWS is:
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When running Pantheon from the [Docker image](../../Getting-Started/Run-Docker-Image.md), [expose ports](../../Getting-Started/Run-Docker-Image.md#exposing-ports).
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!!! tip
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Pantheon supports [UPnP](Using-UPnP.md) for home or small office environments where a wireless router
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or modem provides NAT isolation.
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## P2P Networking
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To enable peer discovery, the P2P UDP port must be open for inbound connections.
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We also recommended opening the P2P TCP port for inbound connections. This is not strictly required because
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Pantheon attempts to initiate outbound TCP connections. However, if no nodes on the network are accepting inbound TCP
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connections, nodes cannot communicate.
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The P2P port is specified by the [`--p2p-port`](../../Reference/Pantheon-CLI-Syntax.md#p2p-port) option.
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The default is `30303`.
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## JSON-RPC API
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To enable access to the [JSON-RPC API](../../Pantheon-API/JSON-RPC-API.md), open the HTTP JSON-RPC and WebSockets JSON-RPC ports to the intended users
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of the JSON-RPC API on TCP.
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The [`--rpc-http-port`](../../Reference/Pantheon-CLI-Syntax.md#rpc-http-port) and [`--rpc-ws-port`](../../Reference/Pantheon-CLI-Syntax.md#rpc-ws-port)
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options specify the HTTP and WebSockets JSON-RPC ports. The defaults are `8545` and `8546`.
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## Metrics
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To enable [Prometheus to access Pantheon](../../Monitoring/Monitoring-Performance.md#monitor-node-performance-using-prometheus),
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open the metrics port or metrics push port to Prometheus or the Prometheus push gateway on TCP.
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The [`--metrics-port`](../../Reference/Pantheon-CLI-Syntax.md#metrics-port) and [`--metrics-push-port`](../../Reference/Pantheon-CLI-Syntax.md#metrics-push-port)
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options specify the ports for Prometheus and Prometheus push gateway. The defaults are `9545` and `9001`. |