Common Port Numbers Reference

Quick reference for network ports commonly used in web development and DevOps.

Web Servers

HTTP, HTTPS, and common web server ports.

80 HTTP Unencrypted web traffic 443 HTTPS Encrypted web traffic (TLS/SSL) 8080 HTTP Alternate Development servers, proxies 8443 HTTPS Alternate Alternative HTTPS port

Databases

Common database server ports.

3306 MySQL MySQL/MariaDB database 5432 PostgreSQL PostgreSQL database 27017 MongoDB MongoDB database 6379 Redis Redis cache/database 9200 Elasticsearch Elasticsearch HTTP API

Development

Common ports for local development.

3000 Node.js / React Default for many JS frameworks 4000 Phoenix / Elixir Phoenix framework default 5000 Flask / Python Flask and other Python apps 5173 Vite Vite dev server default 8000 Django / PHP Django, PHP built-in server

System Services

Essential system and network services.

22 SSH Secure Shell 21 FTP File Transfer Protocol 25 SMTP Email sending 53 DNS Domain Name System 587 SMTP (Submission) Email submission with auth

Message Queues & Containers

Messaging systems and container infrastructure.

5672 RabbitMQ AMQP messaging 9092 Kafka Apache Kafka broker 2375 Docker Docker daemon (unencrypted) 2376 Docker TLS Docker daemon (encrypted)

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