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// Network services

Port 7420: Multichannel real-time lighting control

Port 7420 is assigned by IANA to ipluminary (Multichannel real-time lighting control).

7420

How ipluminary works

Network services
client:7420ipluminaryresponse client:7420ipluminaryresponse

The client sends a request to port 7420 and the ipluminary 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
Network services
01 Security

Is port 7420 dangerous?

We have no specific security note for port 7420. Its risk depends on the program actually listening on it. General advice for network services services:

  • Answer only the networks that need the service (no open resolvers, relays or reflectors).
  • UDP services can be abused for DDoS amplification: rate-limit or block them at the edge.
  • Disable legacy test services that have no use in production.
02 Registry

IANA registry entries for port 7420

ServicePortTransportDescriptionReferenceUpdated
ipluminary 7420 UDP Multichannel real-time lighting control - 2018-01-18
-7420-Reserved--

// source: IANA service name and port number registry

03 Check it

Which program uses port 7420, and is it reachable?

Linux

sudo ss -ltnup 'sport = :7420'      # process listening on 7420
sudo lsof -nP -i :7420

macOS

sudo lsof -nP -i :7420

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 7420 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 7420
netstat -ano | findstr :7420

From another machine

nmap -p 7420 -sV <host>
sudo nmap -sU -p 7420 <host>
nc -zv <host> 7420

Block it in the firewall

sudo ufw deny 7420/udp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 7420" -Direction Inbound -LocalPort 7420 -Protocol UDP -Action Block  # Windows
04 FAQ
What is port 7420 used for?

Port 7420 is assigned by IANA to ipluminary (Multichannel real-time lighting control).

Is port 7420 TCP or UDP?

Port 7420 is registered for UDP.

Is it safe to open port 7420?

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. Answer only the networks that need the service (no open resolvers, relays or reflectors).

How do I check if port 7420 is open?

On Linux run "ss -ltnup 'sport = :7420'", on macOS "lsof -nP -i :7420", and on Windows "netstat -ano | findstr :7420" to see the local process. From another machine, "nmap -p 7420 <host>" shows whether it is reachable.

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