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// Other services

Port 3023: magicnotes

Port 3023 is assigned by IANA to magicnotes (magicnotes).

3023

How magicnotes works

Other services
client:3023magicnotesresponse client:3023magicnotesresponse

The client sends a request to port 3023 and the magicnotes 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 3023 dangerous?

We have no specific security note for port 3023. 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 3023

ServicePortTransportDescriptionReferenceUpdated
magicnotes 3023 TCP, UDP magicnotes - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 3023, and is it reachable?

Linux

sudo ss -ltnup 'sport = :3023'      # process listening on 3023
sudo lsof -nP -i :3023

macOS

sudo lsof -nP -i :3023

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 3023 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 3023
netstat -ano | findstr :3023

From another machine

nmap -p 3023 -sV <host>
sudo nmap -sU -p 3023 <host>
nc -zv <host> 3023

Block it in the firewall

sudo ufw deny 3023/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 3023" -Direction Inbound -LocalPort 3023 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 3023 used for?

Port 3023 is assigned by IANA to magicnotes (magicnotes).

Is port 3023 TCP or UDP?

Port 3023 is registered for TCP and UDP.

Is it safe to open port 3023?

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 3023 is open?

On Linux run "ss -ltnup 'sport = :3023'", on macOS "lsof -nP -i :3023", and on Windows "netstat -ano | findstr :3023" to see the local process. From another machine, "nmap -p 3023 <host>" shows whether it is reachable.

05 Related
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