CyberHunter
Local dataset, no network
// Other services

Port 2233: INFOCRYPT

Port 2233 is assigned by IANA to infocrypt (INFOCRYPT).

2233

How infocrypt works

Other services
client:2233infocryptresponse client:2233infocryptresponse

The client sends a request to port 2233 and the infocrypt 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 2233 dangerous?

We have no specific security note for port 2233. 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 2233

ServicePortTransportDescriptionReferenceUpdated
infocrypt 2233 TCP, UDP INFOCRYPT - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 2233, and is it reachable?

Linux

sudo ss -ltnup 'sport = :2233'      # process listening on 2233
sudo lsof -nP -i :2233

macOS

sudo lsof -nP -i :2233

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 2233 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 2233
netstat -ano | findstr :2233

From another machine

nmap -p 2233 -sV <host>
sudo nmap -sU -p 2233 <host>
nc -zv <host> 2233

Block it in the firewall

sudo ufw deny 2233/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 2233" -Direction Inbound -LocalPort 2233 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 2233 used for?

Port 2233 is assigned by IANA to infocrypt (INFOCRYPT).

Is port 2233 TCP or UDP?

Port 2233 is registered for TCP and UDP.

Is it safe to open port 2233?

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 2233 is open?

On Linux run "ss -ltnup 'sport = :2233'", on macOS "lsof -nP -i :2233", and on Windows "netstat -ano | findstr :2233" to see the local process. From another machine, "nmap -p 2233 <host>" shows whether it is reachable.

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