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// Other services

Port 3226: ISI Industry Software IRP

Port 3226 is assigned by IANA to isi-irp (ISI Industry Software IRP).

3226

How isi-irp works

Other services
client:3226isi-irpresponse client:3226isi-irpresponse

The client sends a request to port 3226 and the isi-irp 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 3226 dangerous?

We have no specific security note for port 3226. 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 3226

ServicePortTransportDescriptionReferenceUpdated
isi-irp 3226 TCP, UDP ISI Industry Software IRP - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 3226, and is it reachable?

Linux

sudo ss -ltnup 'sport = :3226'      # process listening on 3226
sudo lsof -nP -i :3226

macOS

sudo lsof -nP -i :3226

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 3226 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 3226
netstat -ano | findstr :3226

From another machine

nmap -p 3226 -sV <host>
sudo nmap -sU -p 3226 <host>
nc -zv <host> 3226

Block it in the firewall

sudo ufw deny 3226/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 3226" -Direction Inbound -LocalPort 3226 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 3226 used for?

Port 3226 is assigned by IANA to isi-irp (ISI Industry Software IRP).

Is port 3226 TCP or UDP?

Port 3226 is registered for TCP and UDP.

Is it safe to open port 3226?

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 3226 is open?

On Linux run "ss -ltnup 'sport = :3226'", on macOS "lsof -nP -i :3226", and on Windows "netstat -ano | findstr :3226" to see the local process. From another machine, "nmap -p 3226 <host>" shows whether it is reachable.

05 Related
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