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// Other services

Port 3329: HP Device Disc

Port 3329 is assigned by IANA to hp-device-disc (HP Device Disc).

3329

How hp-device-disc works

Other services
client:3329hp-device-discresponse client:3329hp-device-discresponse

The client sends a request to port 3329 and the hp-device-disc 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 3329 dangerous?

We have no specific security note for port 3329. 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 3329

ServicePortTransportDescriptionReferenceUpdated
hp-device-disc 3329 TCP, UDP HP Device Disc - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 3329, and is it reachable?

Linux

sudo ss -ltnup 'sport = :3329'      # process listening on 3329
sudo lsof -nP -i :3329

macOS

sudo lsof -nP -i :3329

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 3329 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 3329
netstat -ano | findstr :3329

From another machine

nmap -p 3329 -sV <host>
sudo nmap -sU -p 3329 <host>
nc -zv <host> 3329

Block it in the firewall

sudo ufw deny 3329/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 3329" -Direction Inbound -LocalPort 3329 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 3329 used for?

Port 3329 is assigned by IANA to hp-device-disc (HP Device Disc).

Is port 3329 TCP or UDP?

Port 3329 is registered for TCP and UDP.

Is it safe to open port 3329?

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 3329 is open?

On Linux run "ss -ltnup 'sport = :3329'", on macOS "lsof -nP -i :3329", and on Windows "netstat -ano | findstr :3329" to see the local process. From another machine, "nmap -p 3329 <host>" shows whether it is reachable.

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