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// Other services

Port 2433: codasrv-se

Port 2433 is assigned by IANA to codasrv-se (codasrv-se).

2433

How codasrv-se works

Other services
client:2433codasrv-seresponse client:2433codasrv-seresponse

The client sends a request to port 2433 and the codasrv-se 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 2433 dangerous?

We have no specific security note for port 2433. 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 2433

ServicePortTransportDescriptionReferenceUpdated
codasrv-se 2433 TCP, UDP codasrv-se - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 2433, and is it reachable?

Linux

sudo ss -ltnup 'sport = :2433'      # process listening on 2433
sudo lsof -nP -i :2433

macOS

sudo lsof -nP -i :2433

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 2433 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 2433
netstat -ano | findstr :2433

From another machine

nmap -p 2433 -sV <host>
sudo nmap -sU -p 2433 <host>
nc -zv <host> 2433

Block it in the firewall

sudo ufw deny 2433/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 2433" -Direction Inbound -LocalPort 2433 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 2433 used for?

Port 2433 is assigned by IANA to codasrv-se (codasrv-se).

Is port 2433 TCP or UDP?

Port 2433 is registered for TCP and UDP.

Is it safe to open port 2433?

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 2433 is open?

On Linux run "ss -ltnup 'sport = :2433'", on macOS "lsof -nP -i :2433", and on Windows "netstat -ano | findstr :2433" to see the local process. From another machine, "nmap -p 2433 <host>" shows whether it is reachable.

05 Related
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