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// Other services

Port 6673: vision_elmd

Port 6673 is assigned by IANA to vision_elmd (vision_elmd), vision-elmd (vision_elmd IANA assigned this well-formed service name as a replacement for "vision_elmd".).

6673

How vision_elmd works

Other services
client:6673vision_elmdresponse client:6673vision_elmdresponse

The client sends a request to port 6673 and the vision_elmd service answers.

Transport
TCP · UDP
Exposure risk
not rated depends on the program listening
Encryption
Unknownnot stated by the registry
IANA status
Assigned2 registered services
Range
Registered (1024-49151)
Category
Other services
01 Security

Is port 6673 dangerous?

We have no specific security note for port 6673. 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 6673

ServicePortTransportDescriptionReferenceUpdated
vision_elmd 6673 TCP, UDP vision_elmd - -
vision-elmd 6673 TCP, UDP vision_elmd IANA assigned this well-formed service name as a replacement for "vision_elmd". - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 6673, and is it reachable?

Linux

sudo ss -ltnup 'sport = :6673'      # process listening on 6673
sudo lsof -nP -i :6673

macOS

sudo lsof -nP -i :6673

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 6673 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 6673
netstat -ano | findstr :6673

From another machine

nmap -p 6673 -sV <host>
sudo nmap -sU -p 6673 <host>
nc -zv <host> 6673

Block it in the firewall

sudo ufw deny 6673/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 6673" -Direction Inbound -LocalPort 6673 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 6673 used for?

Port 6673 is assigned by IANA to vision_elmd (vision_elmd), vision-elmd (vision_elmd IANA assigned this well-formed service name as a replacement for "vision_elmd".).

Is port 6673 TCP or UDP?

Port 6673 is registered for TCP and UDP.

Is it safe to open port 6673?

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 6673 is open?

On Linux run "ss -ltnup 'sport = :6673'", on macOS "lsof -nP -i :6673", and on Windows "netstat -ano | findstr :6673" to see the local process. From another machine, "nmap -p 6673 <host>" shows whether it is reachable.

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