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// Other services

Port 4425: NetROCKEY6 SMART Plus Service

Port 4425 is assigned by IANA to netrockey6 (NetROCKEY6 SMART Plus Service).

4425

How netrockey6 works

Other services
client:4425netrockey6response client:4425netrockey6response

The client sends a request to port 4425 and the netrockey6 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 4425 dangerous?

We have no specific security note for port 4425. 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 4425

ServicePortTransportDescriptionReferenceUpdated
netrockey6 4425 TCP, UDP NetROCKEY6 SMART Plus Service - 2010-09-15

// source: IANA service name and port number registry

03 Check it

Which program uses port 4425, and is it reachable?

Linux

sudo ss -ltnup 'sport = :4425'      # process listening on 4425
sudo lsof -nP -i :4425

macOS

sudo lsof -nP -i :4425

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 4425 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 4425
netstat -ano | findstr :4425

From another machine

nmap -p 4425 -sV <host>
sudo nmap -sU -p 4425 <host>
nc -zv <host> 4425

Block it in the firewall

sudo ufw deny 4425/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 4425" -Direction Inbound -LocalPort 4425 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 4425 used for?

Port 4425 is assigned by IANA to netrockey6 (NetROCKEY6 SMART Plus Service).

Is port 4425 TCP or UDP?

Port 4425 is registered for TCP and UDP.

Is it safe to open port 4425?

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 4425 is open?

On Linux run "ss -ltnup 'sport = :4425'", on macOS "lsof -nP -i :4425", and on Windows "netstat -ano | findstr :4425" to see the local process. From another machine, "nmap -p 4425 <host>" shows whether it is reachable.

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