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// Other services

Port 2234: DirectPlay

Port 2234 is assigned by IANA to directplay (DirectPlay).

2234

How directplay works

Other services
client:2234directplayresponse client:2234directplayresponse

The client sends a request to port 2234 and the directplay 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 2234 dangerous?

We have no specific security note for port 2234. 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 2234

ServicePortTransportDescriptionReferenceUpdated
directplay 2234 TCP, UDP DirectPlay - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 2234, and is it reachable?

Linux

sudo ss -ltnup 'sport = :2234'      # process listening on 2234
sudo lsof -nP -i :2234

macOS

sudo lsof -nP -i :2234

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 2234 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 2234
netstat -ano | findstr :2234

From another machine

nmap -p 2234 -sV <host>
sudo nmap -sU -p 2234 <host>
nc -zv <host> 2234

Block it in the firewall

sudo ufw deny 2234/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 2234" -Direction Inbound -LocalPort 2234 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 2234 used for?

Port 2234 is assigned by IANA to directplay (DirectPlay).

Is port 2234 TCP or UDP?

Port 2234 is registered for TCP and UDP.

Is it safe to open port 2234?

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 2234 is open?

On Linux run "ss -ltnup 'sport = :2234'", on macOS "lsof -nP -i :2234", and on Windows "netstat -ano | findstr :2234" to see the local process. From another machine, "nmap -p 2234 <host>" shows whether it is reachable.

05 Related
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