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// Other services

Port 3289: ENPC

Port 3289 is assigned by IANA to enpc (ENPC).

3289

How enpc works

Other services
client:3289enpcresponse client:3289enpcresponse

The client sends a request to port 3289 and the enpc 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 3289 dangerous?

We have no specific security note for port 3289. 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 3289

ServicePortTransportDescriptionReferenceUpdated
enpc 3289 TCP, UDP ENPC - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 3289, and is it reachable?

Linux

sudo ss -ltnup 'sport = :3289'      # process listening on 3289
sudo lsof -nP -i :3289

macOS

sudo lsof -nP -i :3289

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 3289 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 3289
netstat -ano | findstr :3289

From another machine

nmap -p 3289 -sV <host>
sudo nmap -sU -p 3289 <host>
nc -zv <host> 3289

Block it in the firewall

sudo ufw deny 3289/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 3289" -Direction Inbound -LocalPort 3289 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 3289 used for?

Port 3289 is assigned by IANA to enpc (ENPC).

Is port 3289 TCP or UDP?

Port 3289 is registered for TCP and UDP.

Is it safe to open port 3289?

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 3289 is open?

On Linux run "ss -ltnup 'sport = :3289'", on macOS "lsof -nP -i :3289", and on Windows "netstat -ano | findstr :3289" to see the local process. From another machine, "nmap -p 3289 <host>" shows whether it is reachable.

05 Related
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