CyberHunter
LinkedIn profile - Bastien Cordier Email: contact@bastiencordier.pro
// Other services

Port 3912: Global Maintech Stars

Port 3912 is assigned by IANA to gbmt-stars (Global Maintech Stars).

3912

How gbmt-stars works

Other services
client:3912gbmt-starsresponse client:3912gbmt-starsresponse

The client sends a request to port 3912 and the gbmt-stars 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 3912 dangerous?

We have no specific security note for port 3912. 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 3912

ServicePortTransportDescriptionReferenceUpdated
gbmt-stars 3912 TCP, UDP Global Maintech Stars - 2003-11

// source: IANA service name and port number registry

03 Check it

Which program uses port 3912, and is it reachable?

Linux

sudo ss -ltnup 'sport = :3912'      # process listening on 3912
sudo lsof -nP -i :3912

macOS

sudo lsof -nP -i :3912

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 3912 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 3912
netstat -ano | findstr :3912

From another machine

nmap -p 3912 -sV <host>
sudo nmap -sU -p 3912 <host>
nc -zv <host> 3912

Block it in the firewall

sudo ufw deny 3912/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 3912" -Direction Inbound -LocalPort 3912 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 3912 used for?

Port 3912 is assigned by IANA to gbmt-stars (Global Maintech Stars).

Is port 3912 TCP or UDP?

Port 3912 is registered for TCP and UDP.

Is it safe to open port 3912?

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 3912 is open?

On Linux run "ss -ltnup 'sport = :3912'", on macOS "lsof -nP -i :3912", and on Windows "netstat -ano | findstr :3912" to see the local process. From another machine, "nmap -p 3912 <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

Latest vulnerability news

All news