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// Other services

Port 43189: NDM-AGENT-PORT

Port 43189 is assigned by IANA to ndm-agent-port (NDM-AGENT-PORT).

43189

How ndm-agent-port works

Other services
client:43189ndm-agent-portresponse client:43189ndm-agent-portresponse

The client sends a request to port 43189 and the ndm-agent-port 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 43189 dangerous?

We have no specific security note for port 43189. 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 43189

ServicePortTransportDescriptionReferenceUpdated
ndm-agent-port 43189 TCP, UDP NDM-AGENT-PORT - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 43189, and is it reachable?

Linux

sudo ss -ltnup 'sport = :43189'      # process listening on 43189
sudo lsof -nP -i :43189

macOS

sudo lsof -nP -i :43189

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 43189 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 43189
netstat -ano | findstr :43189

From another machine

nmap -p 43189 -sV <host>
sudo nmap -sU -p 43189 <host>
nc -zv <host> 43189

Block it in the firewall

sudo ufw deny 43189/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 43189" -Direction Inbound -LocalPort 43189 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 43189 used for?

Port 43189 is assigned by IANA to ndm-agent-port (NDM-AGENT-PORT).

Is port 43189 TCP or UDP?

Port 43189 is registered for TCP and UDP.

Is it safe to open port 43189?

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 43189 is open?

On Linux run "ss -ltnup 'sport = :43189'", on macOS "lsof -nP -i :43189", and on Windows "netstat -ano | findstr :43189" to see the local process. From another machine, "nmap -p 43189 <host>" shows whether it is reachable.

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