# Coturn

Coturn is a free, open-source TURN and STUN server that provides VoIP media traffic NAT traversal. It is open source and self-hosted, installable on Docker Hub, Kubernetes (Helm) and Unraid.

Canonical page: https://ourlocalhost.com/app/440/coturn

## Description

Coturn is a free, open-source TURN and STUN server that provides VoIP media traffic NAT traversal. It relays real-time media across firewalls and can act as a general-purpose TURN relay for self-hosted services.

## Platform availability

Available on 2 of 9 platforms: Unraid, Helm.

## Health score

82/100 (Excellent), based on 4 of 5 factors.
- Maintained: 100 (last commit 16 days ago)
- Popular: 83 (14,461 GitHub stars)
- Easy to install: 45 (2 install platforms, install notes, Docker image)
- Security check: 81 (no serious findings, CI, tests, OpenSSF Scorecard 6/10)

## Links

- GitHub: https://github.com/coturn/coturn
- Docker Hub: https://hub.docker.com/r/instrumentisto/coturn/
- Kubernetes (Helm): https://artifacthub.io/packages/helm/jaconi/coturn
- Unraid: https://ca.unraid.net/apps/coturn-03ffpzj1dz33sb?q=coturn

## Common questions

### Which ports should be exposed when running coturn in Docker?

Expose 3478 and 5349 over TCP and UDP. Also expose UDP 49152-65535 for relayed media.

### How can I see coturn startup messages after installing it with apt?

Start turnserver with --log-file stdout. The logs show bind failures, permission problems, and missing database errors.

### What database option is needed for username and password logins?

Start turnserver with a database option such as --db=/var/db/turndb for SQLite. Without a database, username and password logins fail.

### Is the MySQL user database string sensitive?

The --mysql-userdb string includes a database password and user account. Keep that command or configuration file private because it can be used to read or change TURN user data.

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Source: Our Local Host (https://ourlocalhost.com/app/440/coturn), the self-hosted and open-source app directory.