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// Other services

Port 4306: Hellgate London

Port 4306 is assigned by IANA to pinghgl (Hellgate London).

4306

How pinghgl works

Other services
client:4306pinghglresponse client:4306pinghglresponse

The client sends a request to port 4306 and the pinghgl 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 4306 dangerous?

We have no specific security note for port 4306. 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 4306

ServicePortTransportDescriptionReferenceUpdated
pinghgl 4306 TCP, UDP Hellgate London - 2007-08-30

// source: IANA service name and port number registry

03 Check it

Which program uses port 4306, and is it reachable?

Linux

sudo ss -ltnup 'sport = :4306'      # process listening on 4306
sudo lsof -nP -i :4306

macOS

sudo lsof -nP -i :4306

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 4306 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 4306
netstat -ano | findstr :4306

From another machine

nmap -p 4306 -sV <host>
sudo nmap -sU -p 4306 <host>
nc -zv <host> 4306

Block it in the firewall

sudo ufw deny 4306/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 4306" -Direction Inbound -LocalPort 4306 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 4306 used for?

Port 4306 is assigned by IANA to pinghgl (Hellgate London).

Is port 4306 TCP or UDP?

Port 4306 is registered for TCP and UDP.

Is it safe to open port 4306?

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 4306 is open?

On Linux run "ss -ltnup 'sport = :4306'", on macOS "lsof -nP -i :4306", and on Windows "netstat -ano | findstr :4306" to see the local process. From another machine, "nmap -p 4306 <host>" shows whether it is reachable.

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