- Require authentication on cameras and media servers.
- Keep IP cameras and recorders off the Internet; use a VPN for remote viewing.
- Update device firmware.
Port 3689: Digital Audio Access Protocol (iTunes)
Port 3689 is assigned by IANA to daap (Digital Audio Access Protocol (iTunes)).
3689
How daap works
Media & streamingThe device streams video frames over port 3689, continuously, as they are captured.
- Transport
- TCP · UDP
- Exposure risk
- not rated depends on the program listening
- Encryption
- Unknownnot stated by the registry
- IANA status
- Assigned1 registered service
- Range
- Registered (1024-49151)
- Category
- Media & streaming
Is port 3689 dangerous?
We have no specific security note for port 3689. Its risk depends on the program actually listening on it. General advice for media & streaming services:
IANA registry entries for port 3689
| Service | Port | Transport | Description | Reference | Updated |
|---|---|---|---|---|---|
| daap | 3689 | TCP, UDP | Digital Audio Access Protocol (iTunes) | - | 2003-01 |
// source: IANA service name and port number registry
Which program uses port 3689, and is it reachable?
Linux
sudo ss -ltnup 'sport = :3689' # process listening on 3689
sudo lsof -nP -i :3689macOS
sudo lsof -nP -i :3689
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 3689 -State Listen | Select LocalAddress, OwningProcess Get-NetUDPEndpoint -LocalPort 3689 netstat -ano | findstr :3689
From another machine
nmap -p 3689 -sV <host> sudo nmap -sU -p 3689 <host> nc -zv <host> 3689
Block it in the firewall
sudo ufw deny 3689/tcp # Linux (ufw) New-NetFirewallRule -DisplayName "Block 3689" -Direction Inbound -LocalPort 3689 -Protocol TCP -Action Block # Windows
What is port 3689 used for?
Port 3689 is assigned by IANA to daap (Digital Audio Access Protocol (iTunes)).
Is port 3689 TCP or UDP?
Port 3689 is registered for TCP and UDP.
Is it safe to open port 3689?
It depends on the program that listens on it. Open it only for a service you know and only to the networks that need it. Require authentication on cameras and media servers.
How do I check if port 3689 is open?
On Linux run "ss -ltnup 'sport = :3689'", on macOS "lsof -nP -i :3689", and on Windows "netstat -ano | findstr :3689" to see the local process. From another machine, "nmap -p 3689 <host>" shows whether it is reachable.