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// Other services

Port 1738: GameGen1

Port 1738 is assigned by IANA to gamegen1 (GameGen1).

1738

How gamegen1 works

Other services
client:1738gamegen1response client:1738gamegen1response

The client sends a request to port 1738 and the gamegen1 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 1738 dangerous?

We have no specific security note for port 1738. 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 1738

ServicePortTransportDescriptionReferenceUpdated
gamegen1 1738 TCP, UDP GameGen1 - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 1738, and is it reachable?

Linux

sudo ss -ltnup 'sport = :1738'      # process listening on 1738
sudo lsof -nP -i :1738

macOS

sudo lsof -nP -i :1738

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 1738 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 1738
netstat -ano | findstr :1738

From another machine

nmap -p 1738 -sV <host>
sudo nmap -sU -p 1738 <host>
nc -zv <host> 1738

Block it in the firewall

sudo ufw deny 1738/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 1738" -Direction Inbound -LocalPort 1738 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 1738 used for?

Port 1738 is assigned by IANA to gamegen1 (GameGen1).

Is port 1738 TCP or UDP?

Port 1738 is registered for TCP and UDP.

Is it safe to open port 1738?

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 1738 is open?

On Linux run "ss -ltnup 'sport = :1738'", on macOS "lsof -nP -i :1738", and on Windows "netstat -ano | findstr :1738" to see the local process. From another machine, "nmap -p 1738 <host>" shows whether it is reachable.

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