CyberHunter
// Other services

Port 3259: Epson Network Common Devi

Port 3259 is assigned by IANA to epncdp2 (Epson Network Common Devi).

3259

How epncdp2 works

Other services
client:3259epncdp2response client:3259epncdp2response

The client sends a request to port 3259 and the epncdp2 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)
01 Security

Is port 3259 dangerous?

We have no specific security note for port 3259. 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 3259

ServicePortTransportDescriptionReferenceUpdated
epncdp2 3259 TCP, UDP Epson Network Common Devi - 2002-02

// source: IANA service name and port number registry

03 Check it

Which program uses port 3259, and is it reachable?

Linux

sudo ss -ltnup 'sport = :3259'      # process listening on 3259
sudo lsof -nP -i :3259

macOS

sudo lsof -nP -i :3259

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 3259 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 3259
netstat -ano | findstr :3259

From another machine

nmap -p 3259 -sV <host>
sudo nmap -sU -p 3259 <host>
nc -zv <host> 3259

Block it in the firewall

sudo ufw deny 3259/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 3259" -Direction Inbound -LocalPort 3259 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 3259 used for?

Port 3259 is assigned by IANA to epncdp2 (Epson Network Common Devi).

Is port 3259 TCP or UDP?

Port 3259 is registered for TCP and UDP.

Is it safe to open port 3259?

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 3259 is open?

On Linux run "ss -ltnup 'sport = :3259'", on macOS "lsof -nP -i :3259", and on Windows "netstat -ano | findstr :3259" to see the local process. From another machine, "nmap -p 3259 <host>" shows whether it is reachable.

05 Related