CyberHunter
Local dataset, no network
// Other services

Port 9346: C Tech Licensing

Port 9346 is assigned by IANA to ctechlicensing (C Tech Licensing).

9346

How ctechlicensing works

Other services
client:9346ctechlicensingresponse client:9346ctechlicensingresponse

The client sends a request to port 9346 and the ctechlicensing 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 9346 dangerous?

We have no specific security note for port 9346. 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 9346

ServicePortTransportDescriptionReferenceUpdated
ctechlicensing 9346 TCP, UDP C Tech Licensing - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 9346, and is it reachable?

Linux

sudo ss -ltnup 'sport = :9346'      # process listening on 9346
sudo lsof -nP -i :9346

macOS

sudo lsof -nP -i :9346

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 9346 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 9346
netstat -ano | findstr :9346

From another machine

nmap -p 9346 -sV <host>
sudo nmap -sU -p 9346 <host>
nc -zv <host> 9346

Block it in the firewall

sudo ufw deny 9346/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 9346" -Direction Inbound -LocalPort 9346 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 9346 used for?

Port 9346 is assigned by IANA to ctechlicensing (C Tech Licensing).

Is port 9346 TCP or UDP?

Port 9346 is registered for TCP and UDP.

Is it safe to open port 9346?

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 9346 is open?

On Linux run "ss -ltnup 'sport = :9346'", on macOS "lsof -nP -i :9346", and on Windows "netstat -ano | findstr :9346" to see the local process. From another machine, "nmap -p 9346 <host>" shows whether it is reachable.

05 Related
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