CyberHunter
Local dataset, no network
// Other services

Port 22333: ShowCockpit Networking

Port 22333 is assigned by IANA to showcockpit-net (ShowCockpit Networking).

22333

How showcockpit-net works

Other services
client:22333showcockpit-netresponse client:22333showcockpit-netresponse

The client sends a request to port 22333 and the showcockpit-net 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 22333 dangerous?

We have no specific security note for port 22333. 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 22333

ServicePortTransportDescriptionReferenceUpdated
showcockpit-net 22333 TCP, UDP ShowCockpit Networking - 2020-11-18

// source: IANA service name and port number registry

03 Check it

Which program uses port 22333, and is it reachable?

Linux

sudo ss -ltnup 'sport = :22333'      # process listening on 22333
sudo lsof -nP -i :22333

macOS

sudo lsof -nP -i :22333

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 22333 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 22333
netstat -ano | findstr :22333

From another machine

nmap -p 22333 -sV <host>
sudo nmap -sU -p 22333 <host>
nc -zv <host> 22333

Block it in the firewall

sudo ufw deny 22333/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 22333" -Direction Inbound -LocalPort 22333 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 22333 used for?

Port 22333 is assigned by IANA to showcockpit-net (ShowCockpit Networking).

Is port 22333 TCP or UDP?

Port 22333 is registered for TCP and UDP.

Is it safe to open port 22333?

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 22333 is open?

On Linux run "ss -ltnup 'sport = :22333'", on macOS "lsof -nP -i :22333", and on Windows "netstat -ano | findstr :22333" to see the local process. From another machine, "nmap -p 22333 <host>" shows whether it is reachable.

05 Related
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