CyberHunter
Local dataset, no network
// Other services

Port 2402: TaskMaster 2000 Server

Port 2402 is assigned by IANA to taskmaster2000 (TaskMaster 2000 Server).

2402

How taskmaster2000 works

Other services
client:2402taskmaster2000response client:2402taskmaster2000response

The client sends a request to port 2402 and the taskmaster2000 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 2402 dangerous?

We have no specific security note for port 2402. 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 2402

ServicePortTransportDescriptionReferenceUpdated
taskmaster2000 2402 TCP, UDP TaskMaster 2000 Server - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 2402, and is it reachable?

Linux

sudo ss -ltnup 'sport = :2402'      # process listening on 2402
sudo lsof -nP -i :2402

macOS

sudo lsof -nP -i :2402

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 2402 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 2402
netstat -ano | findstr :2402

From another machine

nmap -p 2402 -sV <host>
sudo nmap -sU -p 2402 <host>
nc -zv <host> 2402

Block it in the firewall

sudo ufw deny 2402/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 2402" -Direction Inbound -LocalPort 2402 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 2402 used for?

Port 2402 is assigned by IANA to taskmaster2000 (TaskMaster 2000 Server).

Is port 2402 TCP or UDP?

Port 2402 is registered for TCP and UDP.

Is it safe to open port 2402?

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 2402 is open?

On Linux run "ss -ltnup 'sport = :2402'", on macOS "lsof -nP -i :2402", and on Windows "netstat -ano | findstr :2402" to see the local process. From another machine, "nmap -p 2402 <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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