# WHATPORT(3689)

## NAME

port 3689 — DAAP — Digital Audio Access Protocol — an iTunes-style shared music library, advertised over Bonjour.

Protocol: TCP  
IANA registry

## DESCRIPTION

DAAP is HTTP with a binary content-code payload: a client GETs /server-info, /login, /databases and streams tracks over the same connection. Apple built it for iTunes music sharing, and the port is still used by AirPlay-adjacent software and by open-source servers — OwnTone (formerly forked-daapd) is the common one on Linux and NAS boxes. Instances announce themselves on the LAN over mDNS as _daap._tcp, which is why you find the port on Macs, Synology units, and Raspberry Pis without anyone configuring it. A library can be password-protected, but many are not.

## EXPOSURE

**Expose with care.** It is designed for a trusted LAN and discovered automatically there; publishing it exposes your whole media library, and often unauthenticated, so keep it inside the network.

## CHECK

```sh
curl -sS -D - -o /dev/null http://TARGET:3689/server-info
```

## SEE ALSO

- docs — [Apple Support — TCP and UDP ports used by Apple software products](https://support.apple.com/en-us/103229) (support.apple.com)
- source — [owntone/owntone-server](https://github.com/owntone/owntone-server) (github.com)
- iana — [IANA port registry — 3689 (daap)](https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml?search=3689) (iana.org)

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HTML: <https://whatport.net/3689/> · JSON: <https://whatport.net/3689.json> · full dataset: <https://whatport.net/ports.json>