Port 3483SlimProto
SlimProto is a lightweight streaming protocol developed by Slim Devices, primarily facilitating communication between Logitech Media Server and their Squeezebox family of audio streaming hardware. Designed for simplicity and low latency, SlimProto enables efficient network audio streaming and device management within home audio environments..
- transport
- tcp
- in transit
- cleartext
- assignment
- official
- risk
- 4/10
- lookups
- 8,999
single transport
payload readable on path
registered with iana
caution
rank 544 of 993 · top 55%
1 other service is registered on port 3483. compare all 2 →
Technical Details
what runs on :3483The SlimProto protocol was developed by Slim Devices (later acquired by Logitech) to enable seamless communication between Logitech Media Server and Squeezebox devices. It handles the negotiation, control, and streaming audio data, focusing on lightweight design to minimize latency while maintaining audio quality. The protocol typically functions over TCP on port 3483, where clients initiate connections to the server for playback control and audio data reception.
SlimProto employs a command-oriented structure with specific message types for playback control, status updates, and stream commands. This facilitates synchronized and responsive playback control, allowing for features such as track changes, volume adjustments, and seamless multi-room synchronization. The protocol supports multiple audio codecs, with server-client negotiation determining the optimal format for transmission.
Due to its open design, SlimProto has been implemented across various platforms beyond original Squeezebox hardware. Third-party developers and hobbyists have integrated it into open-source projects and hardware, contributing to its ongoing community relevance despite official device discontinuation.
Security Information
exposure of :3483risk score
4/ 10caution
worth attention. how exposed you are depends on configuration — don't leave it reachable from the internet without a reason.
streaming averages 3.6 across 30 ports — this one sits 0.4 above.
in transit
cleartext
credentials and payloads are readable by anyone on path
assignment
official
registered with iana for this service — scanners fingerprint it by number
reachable over
tcp
every listening transport is another surface to filter at the edge
security overview
Common vulnerabilities associated with SlimProto stem mainly from insufficient authentication and lack of encryption by default, exposing the server and client communication to potential eavesdropping, session hijacking, or unauthorized control. Since SlimProto is often deployed within trusted local networks, attackers with network access may intercept audio streams or manipulate playback commands.
Mitigations include segmenting the audio streaming devices on isolated or VLAN networks, applying strict access controls, and employing firewall rules to restrict access to port 3483. Wrapping the SlimProto communication within a VPN or securing the management interfaces of the server can limit remote exploitation risks. Network monitoring and user awareness also contribute to maintaining a secure deployment.
Related Ports
the 8 most looked-up other ports in streaming — 30 ports carry that label.
| port | service | risk | |||
|---|---|---|---|---|---|
| :8888 | GNUmp3d Streaming HTTP | TCP | Web Services | caution | 76.3k |
| :8000 | Alternate HTTP / SHOUTcast | TCP | Web Services | caution | 45.0k |
| :8880 | Windows Media SOAP Connector | TCP | Streaming | caution | 24.3k |
| :5001 | Slingbox | TCP | Streaming | caution | 22.4k |
| :1220 | QTSS Admin | TCP | Streaming | safe | 20.6k |
| :19294 | Google Talk Voice/Video | TCP | Streaming | caution | 16.6k |
| :12013 | Audition Korea Server | TCPUDP | Streaming | caution | 14.5k |
| :9000 | SqueezeCenter | TCP | Web Services | caution | 14.4k |
risk mix of the 8 listed
- safe13%
- caution88%
0 of 8 encrypted