Common Network Ports List: What Runs on Each Port
Search a list of common TCP and UDP port numbers: SSH 22, HTTP 80, HTTPS 443, MySQL 3306, PostgreSQL 5432 and more, with dev server ports.
Search by port number, service name or word like database. Ports we have a full guide for link to it.
| Port | Protocol | Service | What it is |
|---|
Frequently asked questions
- What is a port number?
- A number from 0 to 65535 that tells a computer which program should receive a network connection.
- What are well-known ports?
- Ports 0 to 1023 are assigned for standard services. 1024 to 49151 are registered, and 49152 to 65535 are dynamic.
- Which ports should not face the internet?
- Databases (3306, 5432, 27017, 6379), remote desktop (3389) and the Docker API (2375). Keep them on localhost, or behind a firewall or VPN.
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