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// Other services

Port 12300: LinoGrid Engine

Port 12300 is assigned by IANA to linogridengine (LinoGrid Engine).

12300

How linogridengine works

Other services
client:12300linogridengineresponse client:12300linogridengineresponse

The client sends a request to port 12300 and the linogridengine 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 12300 dangerous?

We have no specific security note for port 12300. 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 12300

ServicePortTransportDescriptionReferenceUpdated
linogridengine 12300 TCP, UDP LinoGrid Engine - 2004-11

// source: IANA service name and port number registry

03 Check it

Which program uses port 12300, and is it reachable?

Linux

sudo ss -ltnup 'sport = :12300'      # process listening on 12300
sudo lsof -nP -i :12300

macOS

sudo lsof -nP -i :12300

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 12300 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 12300
netstat -ano | findstr :12300

From another machine

nmap -p 12300 -sV <host>
sudo nmap -sU -p 12300 <host>
nc -zv <host> 12300

Block it in the firewall

sudo ufw deny 12300/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 12300" -Direction Inbound -LocalPort 12300 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 12300 used for?

Port 12300 is assigned by IANA to linogridengine (LinoGrid Engine).

Is port 12300 TCP or UDP?

Port 12300 is registered for TCP and UDP.

Is it safe to open port 12300?

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 12300 is open?

On Linux run "ss -ltnup 'sport = :12300'", on macOS "lsof -nP -i :12300", and on Windows "netstat -ano | findstr :12300" to see the local process. From another machine, "nmap -p 12300 <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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