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// Other services

Port 3233: WhiskerControl main port

Port 3233 is assigned by IANA to whisker (WhiskerControl main port).

3233

How whisker works

Other services
client:3233whiskerresponse client:3233whiskerresponse

The client sends a request to port 3233 and the whisker 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 3233 dangerous?

We have no specific security note for port 3233. 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 3233

ServicePortTransportDescriptionReferenceUpdated
whisker 3233 TCP, UDP WhiskerControl main port - 2002-02

// source: IANA service name and port number registry

03 Check it

Which program uses port 3233, and is it reachable?

Linux

sudo ss -ltnup 'sport = :3233'      # process listening on 3233
sudo lsof -nP -i :3233

macOS

sudo lsof -nP -i :3233

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 3233 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 3233
netstat -ano | findstr :3233

From another machine

nmap -p 3233 -sV <host>
sudo nmap -sU -p 3233 <host>
nc -zv <host> 3233

Block it in the firewall

sudo ufw deny 3233/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 3233" -Direction Inbound -LocalPort 3233 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 3233 used for?

Port 3233 is assigned by IANA to whisker (WhiskerControl main port).

Is port 3233 TCP or UDP?

Port 3233 is registered for TCP and UDP.

Is it safe to open port 3233?

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 3233 is open?

On Linux run "ss -ltnup 'sport = :3233'", on macOS "lsof -nP -i :3233", and on Windows "netstat -ano | findstr :3233" to see the local process. From another machine, "nmap -p 3233 <host>" shows whether it is reachable.

05 Related
:4444 Metasploit default / krb524 tcp · udp · high risk :31337 Back Orifice / elite tcp · udp · high risk :1 TCP Port Service Multiplexer tcp · udp :5 Remote Job Entry tcp · udp :9 Discard tcp · udp · sctp · dccp :11 Active Users tcp · udp :17 Quote of the Day tcp · udp :18 Message Send Protocol (historic) tcp · udp

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