open-consul/website/source/docs/install/ports.html.md

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---
layout: "docs"
page_title: "Required Ports"
sidebar_current: "docs-install-ports"
description: |-
Before starting Consul it is important to have the necessary bind ports accessible.
---
# Required Ports
Before running Consul, you should ensure the following bind ports are accessible.
| Use | Default Ports |
| --------------------------------- | ---------------- |
| DNS: The DNS server | 8600 |
| HTTP: The HTTP API | 8500 |
| HTTPS: The HTTPs API | disabled (8501)* |
| gRPC: The gRPC API | disabled (8502)* |
| LAN Serf: The Serf LAN port. | 8301 |
| Wan Serf: The Serf WAN port | 8302 |
| server: Server RPC address | 8300 |
| Sidecar Proxy Min: Inclusive min port number to use for automatically assigned sidecar service registrations. | 21000 |
| Sidecar Proxy Max: Inclusive max port number to use for automatically assigned sidecar service registrations. | 21255 |
*For `HTTPS` and `gRPC` the ports specified in the table
are recommendations.
Note, the default ports can be changed in the [agent configuration](/docs/agent/options.html#ports).