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// Other services

Port 4132: NUTS Daemon

Port 4132 is assigned by IANA to nuts_dem (NUTS Daemon), nuts-dem (NUTS Daemon IANA assigned this well-formed service name as a replacement for "nuts_dem".).

4132

How nuts_dem works

Other services
client:4132nuts_demresponse client:4132nuts_demresponse

The client sends a request to port 4132 and the nuts_dem service answers.

Transport
TCP · UDP
Exposure risk
not rated depends on the program listening
Encryption
Unknownnot stated by the registry
IANA status
Assigned2 registered services
Range
Registered (1024-49151)
Category
Other services
01 Security

Is port 4132 dangerous?

We have no specific security note for port 4132. 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 4132

ServicePortTransportDescriptionReferenceUpdated
nuts_dem 4132 TCP, UDP NUTS Daemon - -
nuts-dem 4132 TCP, UDP NUTS Daemon IANA assigned this well-formed service name as a replacement for "nuts_dem". - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 4132, and is it reachable?

Linux

sudo ss -ltnup 'sport = :4132'      # process listening on 4132
sudo lsof -nP -i :4132

macOS

sudo lsof -nP -i :4132

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 4132 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 4132
netstat -ano | findstr :4132

From another machine

nmap -p 4132 -sV <host>
sudo nmap -sU -p 4132 <host>
nc -zv <host> 4132

Block it in the firewall

sudo ufw deny 4132/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 4132" -Direction Inbound -LocalPort 4132 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 4132 used for?

Port 4132 is assigned by IANA to nuts_dem (NUTS Daemon), nuts-dem (NUTS Daemon IANA assigned this well-formed service name as a replacement for "nuts_dem".).

Is port 4132 TCP or UDP?

Port 4132 is registered for TCP and UDP.

Is it safe to open port 4132?

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 4132 is open?

On Linux run "ss -ltnup 'sport = :4132'", on macOS "lsof -nP -i :4132", and on Windows "netstat -ano | findstr :4132" to see the local process. From another machine, "nmap -p 4132 <host>" shows whether it is reachable.

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