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// Other services

Port 13894: Ultimate Control communication protocol

Port 13894 is assigned by IANA to ucontrol (Ultimate Control communication protocol).

13894

How ucontrol works

Other services
client:13894ucontrolresponse client:13894ucontrolresponse

The client sends a request to port 13894 and the ucontrol 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 13894 dangerous?

We have no specific security note for port 13894. 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 13894

ServicePortTransportDescriptionReferenceUpdated
ucontrol 13894 TCP, UDP Ultimate Control communication protocol - 2012-09-10

// source: IANA service name and port number registry

03 Check it

Which program uses port 13894, and is it reachable?

Linux

sudo ss -ltnup 'sport = :13894'      # process listening on 13894
sudo lsof -nP -i :13894

macOS

sudo lsof -nP -i :13894

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 13894 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 13894
netstat -ano | findstr :13894

From another machine

nmap -p 13894 -sV <host>
sudo nmap -sU -p 13894 <host>
nc -zv <host> 13894

Block it in the firewall

sudo ufw deny 13894/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 13894" -Direction Inbound -LocalPort 13894 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 13894 used for?

Port 13894 is assigned by IANA to ucontrol (Ultimate Control communication protocol).

Is port 13894 TCP or UDP?

Port 13894 is registered for TCP and UDP.

Is it safe to open port 13894?

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 13894 is open?

On Linux run "ss -ltnup 'sport = :13894'", on macOS "lsof -nP -i :13894", and on Windows "netstat -ano | findstr :13894" to see the local process. From another machine, "nmap -p 13894 <host>" shows whether it is reachable.

05 Related
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