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Local dataset, no network
// Other services

Port 3189: Pinnacle Sys InfEx Port

Port 3189 is assigned by IANA to pcle-infex (Pinnacle Sys InfEx Port).

3189

How pcle-infex works

Other services
client:3189pcle-infexresponse client:3189pcle-infexresponse

The client sends a request to port 3189 and the pcle-infex 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 3189 dangerous?

We have no specific security note for port 3189. 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 3189

ServicePortTransportDescriptionReferenceUpdated
pcle-infex 3189 TCP, UDP Pinnacle Sys InfEx Port - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 3189, and is it reachable?

Linux

sudo ss -ltnup 'sport = :3189'      # process listening on 3189
sudo lsof -nP -i :3189

macOS

sudo lsof -nP -i :3189

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 3189 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 3189
netstat -ano | findstr :3189

From another machine

nmap -p 3189 -sV <host>
sudo nmap -sU -p 3189 <host>
nc -zv <host> 3189

Block it in the firewall

sudo ufw deny 3189/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 3189" -Direction Inbound -LocalPort 3189 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 3189 used for?

Port 3189 is assigned by IANA to pcle-infex (Pinnacle Sys InfEx Port).

Is port 3189 TCP or UDP?

Port 3189 is registered for TCP and UDP.

Is it safe to open port 3189?

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 3189 is open?

On Linux run "ss -ltnup 'sport = :3189'", on macOS "lsof -nP -i :3189", and on Windows "netstat -ano | findstr :3189" to see the local process. From another machine, "nmap -p 3189 <host>" shows whether it is reachable.

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