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// Other services

Port 418: Hyper-G

Port 418 is assigned by IANA to hyper-g (Hyper-G).

418

How hyper-g works

Other services
client:418hyper-gresponse client:418hyper-gresponse

The client sends a request to port 418 and the hyper-g 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
Well-known (0-1023)
Category
Other services
01 Security

Is port 418 dangerous?

We have no specific security note for port 418. 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 418

ServicePortTransportDescriptionReferenceUpdated
hyper-g 418 TCP, UDP Hyper-G - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 418, and is it reachable?

Linux

sudo ss -ltnup 'sport = :418'      # process listening on 418
sudo lsof -nP -i :418

macOS

sudo lsof -nP -i :418

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 418 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 418
netstat -ano | findstr :418

From another machine

nmap -p 418 -sV <host>
sudo nmap -sU -p 418 <host>
nc -zv <host> 418

Block it in the firewall

sudo ufw deny 418/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 418" -Direction Inbound -LocalPort 418 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 418 used for?

Port 418 is assigned by IANA to hyper-g (Hyper-G).

Is port 418 TCP or UDP?

Port 418 is registered for TCP and UDP.

Is it safe to open port 418?

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 418 is open?

On Linux run "ss -ltnup 'sport = :418'", on macOS "lsof -nP -i :418", and on Windows "netstat -ano | findstr :418" to see the local process. From another machine, "nmap -p 418 <host>" shows whether it is reachable.

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