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Local dataset, no network
// Other services

Port 3101: HP PolicyXpert PIB Server

Port 3101 is assigned by IANA to hp-pxpib (HP PolicyXpert PIB Server).

3101

How hp-pxpib works

Other services
client:3101hp-pxpibresponse client:3101hp-pxpibresponse

The client sends a request to port 3101 and the hp-pxpib 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 3101 dangerous?

We have no specific security note for port 3101. 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 3101

ServicePortTransportDescriptionReferenceUpdated
hp-pxpib 3101 TCP, UDP HP PolicyXpert PIB Server - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 3101, and is it reachable?

Linux

sudo ss -ltnup 'sport = :3101'      # process listening on 3101
sudo lsof -nP -i :3101

macOS

sudo lsof -nP -i :3101

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 3101 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 3101
netstat -ano | findstr :3101

From another machine

nmap -p 3101 -sV <host>
sudo nmap -sU -p 3101 <host>
nc -zv <host> 3101

Block it in the firewall

sudo ufw deny 3101/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 3101" -Direction Inbound -LocalPort 3101 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 3101 used for?

Port 3101 is assigned by IANA to hp-pxpib (HP PolicyXpert PIB Server).

Is port 3101 TCP or UDP?

Port 3101 is registered for TCP and UDP.

Is it safe to open port 3101?

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 3101 is open?

On Linux run "ss -ltnup 'sport = :3101'", on macOS "lsof -nP -i :3101", and on Windows "netstat -ano | findstr :3101" to see the local process. From another machine, "nmap -p 3101 <host>" shows whether it is reachable.

05 Related
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