CyberHunter
Local dataset, no network
// Other services

Port 25005: icl-twobase6

Port 25005 is assigned by IANA to icl-twobase6 (icl-twobase6).

25005

How icl-twobase6 works

Other services
client:25005icl-twobase6response client:25005icl-twobase6response

The client sends a request to port 25005 and the icl-twobase6 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 25005 dangerous?

We have no specific security note for port 25005. 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 25005

ServicePortTransportDescriptionReferenceUpdated
icl-twobase6 25005 TCP, UDP icl-twobase6 - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 25005, and is it reachable?

Linux

sudo ss -ltnup 'sport = :25005'      # process listening on 25005
sudo lsof -nP -i :25005

macOS

sudo lsof -nP -i :25005

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 25005 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 25005
netstat -ano | findstr :25005

From another machine

nmap -p 25005 -sV <host>
sudo nmap -sU -p 25005 <host>
nc -zv <host> 25005

Block it in the firewall

sudo ufw deny 25005/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 25005" -Direction Inbound -LocalPort 25005 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 25005 used for?

Port 25005 is assigned by IANA to icl-twobase6 (icl-twobase6).

Is port 25005 TCP or UDP?

Port 25005 is registered for TCP and UDP.

Is it safe to open port 25005?

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 25005 is open?

On Linux run "ss -ltnup 'sport = :25005'", on macOS "lsof -nP -i :25005", and on Windows "netstat -ano | findstr :25005" to see the local process. From another machine, "nmap -p 25005 <host>" shows whether it is reachable.

05 Related
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