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// Other services

Port 5046: Vishay PM UDP Service

Port 5046 is assigned by IANA to vpm-udp (Vishay PM UDP Service).

5046

How vpm-udp works

Other services
client:5046vpm-udpresponse client:5046vpm-udpresponse

The client sends a request to port 5046 and the vpm-udp service answers.

Transport
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 5046 dangerous?

We have no specific security note for port 5046. 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 5046

ServicePortTransportDescriptionReferenceUpdated
vpm-udp 5046 UDP Vishay PM UDP Service - 2010-06-17
-5046-Reserved--

// source: IANA service name and port number registry

03 Check it

Which program uses port 5046, and is it reachable?

Linux

sudo ss -ltnup 'sport = :5046'      # process listening on 5046
sudo lsof -nP -i :5046

macOS

sudo lsof -nP -i :5046

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 5046 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 5046
netstat -ano | findstr :5046

From another machine

nmap -p 5046 -sV <host>
sudo nmap -sU -p 5046 <host>
nc -zv <host> 5046

Block it in the firewall

sudo ufw deny 5046/udp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 5046" -Direction Inbound -LocalPort 5046 -Protocol UDP -Action Block  # Windows
04 FAQ
What is port 5046 used for?

Port 5046 is assigned by IANA to vpm-udp (Vishay PM UDP Service).

Is port 5046 TCP or UDP?

Port 5046 is registered for UDP.

Is it safe to open port 5046?

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 5046 is open?

On Linux run "ss -ltnup 'sport = :5046'", on macOS "lsof -nP -i :5046", and on Windows "netstat -ano | findstr :5046" to see the local process. From another machine, "nmap -p 5046 <host>" shows whether it is reachable.

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