CyberHunter
Local dataset, no network
// Other services

Port 26487: EXOconfig

Port 26487 is assigned by IANA to exoconfig (EXOconfig).

26487

How exoconfig works

Other services
client:26487exoconfigresponse client:26487exoconfigresponse

The client sends a request to port 26487 and the exoconfig 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 26487 dangerous?

We have no specific security note for port 26487. 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 26487

ServicePortTransportDescriptionReferenceUpdated
exoconfig 26487 TCP, UDP EXOconfig - 2008-12-24

// source: IANA service name and port number registry

03 Check it

Which program uses port 26487, and is it reachable?

Linux

sudo ss -ltnup 'sport = :26487'      # process listening on 26487
sudo lsof -nP -i :26487

macOS

sudo lsof -nP -i :26487

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 26487 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 26487
netstat -ano | findstr :26487

From another machine

nmap -p 26487 -sV <host>
sudo nmap -sU -p 26487 <host>
nc -zv <host> 26487

Block it in the firewall

sudo ufw deny 26487/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 26487" -Direction Inbound -LocalPort 26487 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 26487 used for?

Port 26487 is assigned by IANA to exoconfig (EXOconfig).

Is port 26487 TCP or UDP?

Port 26487 is registered for TCP and UDP.

Is it safe to open port 26487?

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 26487 is open?

On Linux run "ss -ltnup 'sport = :26487'", on macOS "lsof -nP -i :26487", and on Windows "netstat -ano | findstr :26487" to see the local process. From another machine, "nmap -p 26487 <host>" shows whether it is reachable.

05 Related
:4444 Metasploit default / krb524 tcp · udp · high risk :31337 Back Orifice / elite tcp · udp · high risk :1 TCP Port Service Multiplexer tcp · udp :5 Remote Job Entry tcp · udp :9 Discard tcp · udp · sctp · dccp :11 Active Users tcp · udp :17 Quote of the Day tcp · udp :18 Message Send Protocol (historic) tcp · udp

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