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// Other services

Port 3483: Slim Devices Protocol

Port 3483 is assigned by IANA to slim-devices (Slim Devices Protocol).

3483

How slim-devices works

Other services
client:3483slim-devicesresponse client:3483slim-devicesresponse

The client sends a request to port 3483 and the slim-devices service answers.

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
Other services
01 Security

Is port 3483 dangerous?

We have no specific security note for port 3483. Its risk depends on the program actually listening on it. General advice for other services services:

  • Close the port if nothing on the host needs it.
  • Identify the process that listens on it (commands below) before opening it in a firewall.
  • Expose a service only to the networks that use it.
02 Registry

IANA registry entries for port 3483

ServicePortTransportDescriptionReferenceUpdated
slim-devices 3483 TCP, UDP Slim Devices Protocol - 2002-05

// source: IANA service name and port number registry

03 Check it

Which program uses port 3483, and is it reachable?

Linux

sudo ss -ltnup 'sport = :3483'      # process listening on 3483
sudo lsof -nP -i :3483

macOS

sudo lsof -nP -i :3483

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 3483 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 3483
netstat -ano | findstr :3483

From another machine

nmap -p 3483 -sV <host>
sudo nmap -sU -p 3483 <host>
nc -zv <host> 3483

Block it in the firewall

sudo ufw deny 3483/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 3483" -Direction Inbound -LocalPort 3483 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 3483 used for?

Port 3483 is assigned by IANA to slim-devices (Slim Devices Protocol).

Is port 3483 TCP or UDP?

Port 3483 is registered for TCP and UDP.

Is it safe to open port 3483?

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. Close the port if nothing on the host needs it.

How do I check if port 3483 is open?

On Linux run "ss -ltnup 'sport = :3483'", on macOS "lsof -nP -i :3483", and on Windows "netstat -ano | findstr :3483" to see the local process. From another machine, "nmap -p 3483 <host>" shows whether it is reachable.

05 Related
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