CyberHunter
LinkedIn profile - Bastien Cordier Email: contact@bastiencordier.pro
// Other services

Port 25002: icl-twobase3

Port 25002 is assigned by IANA to icl-twobase3 (icl-twobase3).

25002

How icl-twobase3 works

Other services
client:25002icl-twobase3response client:25002icl-twobase3response

The client sends a request to port 25002 and the icl-twobase3 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 25002 dangerous?

We have no specific security note for port 25002. 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 25002

ServicePortTransportDescriptionReferenceUpdated
icl-twobase3 25002 TCP, UDP icl-twobase3 - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 25002, and is it reachable?

Linux

sudo ss -ltnup 'sport = :25002'      # process listening on 25002
sudo lsof -nP -i :25002

macOS

sudo lsof -nP -i :25002

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 25002 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 25002
netstat -ano | findstr :25002

From another machine

nmap -p 25002 -sV <host>
sudo nmap -sU -p 25002 <host>
nc -zv <host> 25002

Block it in the firewall

sudo ufw deny 25002/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 25002" -Direction Inbound -LocalPort 25002 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 25002 used for?

Port 25002 is assigned by IANA to icl-twobase3 (icl-twobase3).

Is port 25002 TCP or UDP?

Port 25002 is registered for TCP and UDP.

Is it safe to open port 25002?

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 25002 is open?

On Linux run "ss -ltnup 'sport = :25002'", on macOS "lsof -nP -i :25002", and on Windows "netstat -ano | findstr :25002" to see the local process. From another machine, "nmap -p 25002 <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

Latest vulnerability news

All news