CyberHunter
Local dataset, no network
// Other services

Port 2356: GXT License Managemant

Port 2356 is assigned by IANA to gxtelmd (GXT License Managemant).

2356

How gxtelmd works

Other services
client:2356gxtelmdresponse client:2356gxtelmdresponse

The client sends a request to port 2356 and the gxtelmd 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 2356 dangerous?

We have no specific security note for port 2356. 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 2356

ServicePortTransportDescriptionReferenceUpdated
gxtelmd 2356 TCP, UDP GXT License Managemant - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 2356, and is it reachable?

Linux

sudo ss -ltnup 'sport = :2356'      # process listening on 2356
sudo lsof -nP -i :2356

macOS

sudo lsof -nP -i :2356

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 2356 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 2356
netstat -ano | findstr :2356

From another machine

nmap -p 2356 -sV <host>
sudo nmap -sU -p 2356 <host>
nc -zv <host> 2356

Block it in the firewall

sudo ufw deny 2356/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 2356" -Direction Inbound -LocalPort 2356 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 2356 used for?

Port 2356 is assigned by IANA to gxtelmd (GXT License Managemant).

Is port 2356 TCP or UDP?

Port 2356 is registered for TCP and UDP.

Is it safe to open port 2356?

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 2356 is open?

On Linux run "ss -ltnup 'sport = :2356'", on macOS "lsof -nP -i :2356", and on Windows "netstat -ano | findstr :2356" to see the local process. From another machine, "nmap -p 2356 <host>" shows whether it is reachable.

05 Related
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