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// Other services

Port 23001: Inova LightLink Server Type 2

Port 23001 is assigned by IANA to inovaport2 (Inova LightLink Server Type 2).

23001

How inovaport2 works

Other services
client:23001inovaport2response client:23001inovaport2response

The client sends a request to port 23001 and the inovaport2 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 23001 dangerous?

We have no specific security note for port 23001. 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 23001

ServicePortTransportDescriptionReferenceUpdated
inovaport2 23001 TCP, UDP Inova LightLink Server Type 2 - 2006-10

// source: IANA service name and port number registry

03 Check it

Which program uses port 23001, and is it reachable?

Linux

sudo ss -ltnup 'sport = :23001'      # process listening on 23001
sudo lsof -nP -i :23001

macOS

sudo lsof -nP -i :23001

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 23001 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 23001
netstat -ano | findstr :23001

From another machine

nmap -p 23001 -sV <host>
sudo nmap -sU -p 23001 <host>
nc -zv <host> 23001

Block it in the firewall

sudo ufw deny 23001/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 23001" -Direction Inbound -LocalPort 23001 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 23001 used for?

Port 23001 is assigned by IANA to inovaport2 (Inova LightLink Server Type 2).

Is port 23001 TCP or UDP?

Port 23001 is registered for TCP and UDP.

Is it safe to open port 23001?

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 23001 is open?

On Linux run "ss -ltnup 'sport = :23001'", on macOS "lsof -nP -i :23001", and on Windows "netstat -ano | findstr :23001" to see the local process. From another machine, "nmap -p 23001 <host>" shows whether it is reachable.

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