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// Other services

Port 672: VPPS-QUA

Port 672 is assigned by IANA to vpps-qua (VPPS-QUA).

672

How vpps-qua works

Other services
client:672vpps-quaresponse client:672vpps-quaresponse

The client sends a request to port 672 and the vpps-qua 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
Well-known (0-1023)
Category
Other services
01 Security

Is port 672 dangerous?

We have no specific security note for port 672. 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 672

ServicePortTransportDescriptionReferenceUpdated
vpps-qua 672 TCP, UDP VPPS-QUA - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 672, and is it reachable?

Linux

sudo ss -ltnup 'sport = :672'      # process listening on 672
sudo lsof -nP -i :672

macOS

sudo lsof -nP -i :672

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 672 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 672
netstat -ano | findstr :672

From another machine

nmap -p 672 -sV <host>
sudo nmap -sU -p 672 <host>
nc -zv <host> 672

Block it in the firewall

sudo ufw deny 672/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 672" -Direction Inbound -LocalPort 672 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 672 used for?

Port 672 is assigned by IANA to vpps-qua (VPPS-QUA).

Is port 672 TCP or UDP?

Port 672 is registered for TCP and UDP.

Is it safe to open port 672?

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 672 is open?

On Linux run "ss -ltnup 'sport = :672'", on macOS "lsof -nP -i :672", and on Windows "netstat -ano | findstr :672" to see the local process. From another machine, "nmap -p 672 <host>" shows whether it is reachable.

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