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// Other services

Port 1566: CORELVIDEO

Port 1566 is assigned by IANA to corelvideo (CORELVIDEO).

1566

How corelvideo works

Other services
client:1566corelvideoresponse client:1566corelvideoresponse

The client sends a request to port 1566 and the corelvideo 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 1566 dangerous?

We have no specific security note for port 1566. 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 1566

ServicePortTransportDescriptionReferenceUpdated
corelvideo 1566 TCP, UDP CORELVIDEO - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 1566, and is it reachable?

Linux

sudo ss -ltnup 'sport = :1566'      # process listening on 1566
sudo lsof -nP -i :1566

macOS

sudo lsof -nP -i :1566

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1566 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 1566
netstat -ano | findstr :1566

From another machine

nmap -p 1566 -sV <host>
sudo nmap -sU -p 1566 <host>
nc -zv <host> 1566

Block it in the firewall

sudo ufw deny 1566/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 1566" -Direction Inbound -LocalPort 1566 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 1566 used for?

Port 1566 is assigned by IANA to corelvideo (CORELVIDEO).

Is port 1566 TCP or UDP?

Port 1566 is registered for TCP and UDP.

Is it safe to open port 1566?

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 1566 is open?

On Linux run "ss -ltnup 'sport = :1566'", on macOS "lsof -nP -i :1566", and on Windows "netstat -ano | findstr :1566" to see the local process. From another machine, "nmap -p 1566 <host>" shows whether it is reachable.

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