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// Other services

Port 4134: NIFTY-Serve HMI protocol

Port 4134 is assigned by IANA to nifty-hmi (NIFTY-Serve HMI protocol).

4134

How nifty-hmi works

Other services
client:4134nifty-hmiresponse client:4134nifty-hmiresponse

The client sends a request to port 4134 and the nifty-hmi 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 4134 dangerous?

We have no specific security note for port 4134. 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 4134

ServicePortTransportDescriptionReferenceUpdated
nifty-hmi 4134 TCP, UDP NIFTY-Serve HMI protocol - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 4134, and is it reachable?

Linux

sudo ss -ltnup 'sport = :4134'      # process listening on 4134
sudo lsof -nP -i :4134

macOS

sudo lsof -nP -i :4134

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 4134 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 4134
netstat -ano | findstr :4134

From another machine

nmap -p 4134 -sV <host>
sudo nmap -sU -p 4134 <host>
nc -zv <host> 4134

Block it in the firewall

sudo ufw deny 4134/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 4134" -Direction Inbound -LocalPort 4134 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 4134 used for?

Port 4134 is assigned by IANA to nifty-hmi (NIFTY-Serve HMI protocol).

Is port 4134 TCP or UDP?

Port 4134 is registered for TCP and UDP.

Is it safe to open port 4134?

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 4134 is open?

On Linux run "ss -ltnup 'sport = :4134'", on macOS "lsof -nP -i :4134", and on Windows "netstat -ano | findstr :4134" to see the local process. From another machine, "nmap -p 4134 <host>" shows whether it is reachable.

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