CyberHunter
Local dataset, no network
// Other services

Port 23402: Novar Global

Port 23402 is assigned by IANA to novar-global (Novar Global).

23402

How novar-global works

Other services
client:23402novar-globalresponse client:23402novar-globalresponse

The client sends a request to port 23402 and the novar-global 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 23402 dangerous?

We have no specific security note for port 23402. 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 23402

ServicePortTransportDescriptionReferenceUpdated
novar-global 23402 TCP, UDP Novar Global - 2006-02

// source: IANA service name and port number registry

03 Check it

Which program uses port 23402, and is it reachable?

Linux

sudo ss -ltnup 'sport = :23402'      # process listening on 23402
sudo lsof -nP -i :23402

macOS

sudo lsof -nP -i :23402

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 23402 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 23402
netstat -ano | findstr :23402

From another machine

nmap -p 23402 -sV <host>
sudo nmap -sU -p 23402 <host>
nc -zv <host> 23402

Block it in the firewall

sudo ufw deny 23402/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 23402" -Direction Inbound -LocalPort 23402 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 23402 used for?

Port 23402 is assigned by IANA to novar-global (Novar Global).

Is port 23402 TCP or UDP?

Port 23402 is registered for TCP and UDP.

Is it safe to open port 23402?

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 23402 is open?

On Linux run "ss -ltnup 'sport = :23402'", on macOS "lsof -nP -i :23402", and on Windows "netstat -ano | findstr :23402" to see the local process. From another machine, "nmap -p 23402 <host>" shows whether it is reachable.

05 Related
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