CyberHunter
Local dataset, no network
// Other services

Port 23000: Inova LightLink Server Type 1

Port 23000 is assigned by IANA to inovaport1 (Inova LightLink Server Type 1).

23000

How inovaport1 works

Other services
client:23000inovaport1response client:23000inovaport1response

The client sends a request to port 23000 and the inovaport1 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 23000 dangerous?

We have no specific security note for port 23000. 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 23000

ServicePortTransportDescriptionReferenceUpdated
inovaport1 23000 TCP, UDP Inova LightLink Server Type 1 - 2006-10

// source: IANA service name and port number registry

03 Check it

Which program uses port 23000, and is it reachable?

Linux

sudo ss -ltnup 'sport = :23000'      # process listening on 23000
sudo lsof -nP -i :23000

macOS

sudo lsof -nP -i :23000

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 23000 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 23000
netstat -ano | findstr :23000

From another machine

nmap -p 23000 -sV <host>
sudo nmap -sU -p 23000 <host>
nc -zv <host> 23000

Block it in the firewall

sudo ufw deny 23000/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 23000" -Direction Inbound -LocalPort 23000 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 23000 used for?

Port 23000 is assigned by IANA to inovaport1 (Inova LightLink Server Type 1).

Is port 23000 TCP or UDP?

Port 23000 is registered for TCP and UDP.

Is it safe to open port 23000?

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 23000 is open?

On Linux run "ss -ltnup 'sport = :23000'", on macOS "lsof -nP -i :23000", and on Windows "netstat -ano | findstr :23000" to see the local process. From another machine, "nmap -p 23000 <host>" shows whether it is reachable.

05 Related
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