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// Other services

Port 26489: EXOnet

Port 26489 is assigned by IANA to exonet (EXOnet).

26489

How exonet works

Other services
client:26489exonetresponse client:26489exonetresponse

The client sends a request to port 26489 and the exonet 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 26489 dangerous?

We have no specific security note for port 26489. 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 26489

ServicePortTransportDescriptionReferenceUpdated
exonet 26489 TCP, UDP EXOnet - 2008-12-24

// source: IANA service name and port number registry

03 Check it

Which program uses port 26489, and is it reachable?

Linux

sudo ss -ltnup 'sport = :26489'      # process listening on 26489
sudo lsof -nP -i :26489

macOS

sudo lsof -nP -i :26489

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 26489 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 26489
netstat -ano | findstr :26489

From another machine

nmap -p 26489 -sV <host>
sudo nmap -sU -p 26489 <host>
nc -zv <host> 26489

Block it in the firewall

sudo ufw deny 26489/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 26489" -Direction Inbound -LocalPort 26489 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 26489 used for?

Port 26489 is assigned by IANA to exonet (EXOnet).

Is port 26489 TCP or UDP?

Port 26489 is registered for TCP and UDP.

Is it safe to open port 26489?

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 26489 is open?

On Linux run "ss -ltnup 'sport = :26489'", on macOS "lsof -nP -i :26489", and on Windows "netstat -ano | findstr :26489" to see the local process. From another machine, "nmap -p 26489 <host>" shows whether it is reachable.

05 Related
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