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// Other services

Port 48653: Robot Raconteur transport

Port 48653 is assigned by IANA to robotraconteur (Robot Raconteur transport).

48653

How robotraconteur works

Other services
client:48653robotraconteurresponse client:48653robotraconteurresponse

The client sends a request to port 48653 and the robotraconteur 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 48653 dangerous?

We have no specific security note for port 48653. 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 48653

ServicePortTransportDescriptionReferenceUpdated
robotraconteur 48653 TCP, UDP Robot Raconteur transport - 2014-01-27

// source: IANA service name and port number registry

03 Check it

Which program uses port 48653, and is it reachable?

Linux

sudo ss -ltnup 'sport = :48653'      # process listening on 48653
sudo lsof -nP -i :48653

macOS

sudo lsof -nP -i :48653

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 48653 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 48653
netstat -ano | findstr :48653

From another machine

nmap -p 48653 -sV <host>
sudo nmap -sU -p 48653 <host>
nc -zv <host> 48653

Block it in the firewall

sudo ufw deny 48653/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 48653" -Direction Inbound -LocalPort 48653 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 48653 used for?

Port 48653 is assigned by IANA to robotraconteur (Robot Raconteur transport).

Is port 48653 TCP or UDP?

Port 48653 is registered for TCP and UDP.

Is it safe to open port 48653?

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 48653 is open?

On Linux run "ss -ltnup 'sport = :48653'", on macOS "lsof -nP -i :48653", and on Windows "netstat -ano | findstr :48653" to see the local process. From another machine, "nmap -p 48653 <host>" shows whether it is reachable.

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