CyberHunter
Local dataset, no network
// Other services

Port 3908: HP Procurve NetManagement

Port 3908 is assigned by IANA to hppronetman (HP Procurve NetManagement).

3908

How hppronetman works

Other services
client:3908hppronetmanresponse client:3908hppronetmanresponse

The client sends a request to port 3908 and the hppronetman 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 3908 dangerous?

We have no specific security note for port 3908. 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 3908

ServicePortTransportDescriptionReferenceUpdated
hppronetman 3908 TCP, UDP HP Procurve NetManagement - 2003-11

// source: IANA service name and port number registry

03 Check it

Which program uses port 3908, and is it reachable?

Linux

sudo ss -ltnup 'sport = :3908'      # process listening on 3908
sudo lsof -nP -i :3908

macOS

sudo lsof -nP -i :3908

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 3908 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 3908
netstat -ano | findstr :3908

From another machine

nmap -p 3908 -sV <host>
sudo nmap -sU -p 3908 <host>
nc -zv <host> 3908

Block it in the firewall

sudo ufw deny 3908/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 3908" -Direction Inbound -LocalPort 3908 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 3908 used for?

Port 3908 is assigned by IANA to hppronetman (HP Procurve NetManagement).

Is port 3908 TCP or UDP?

Port 3908 is registered for TCP and UDP.

Is it safe to open port 3908?

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 3908 is open?

On Linux run "ss -ltnup 'sport = :3908'", on macOS "lsof -nP -i :3908", and on Windows "netstat -ano | findstr :3908" to see the local process. From another machine, "nmap -p 3908 <host>" shows whether it is reachable.

05 Related
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