CyberHunter
Local dataset, no network
// Other services

Port 2336: Apple UG Control

Port 2336 is assigned by IANA to appleugcontrol (Apple UG Control).

2336

How appleugcontrol works

Other services
client:2336appleugcontrolresponse client:2336appleugcontrolresponse

The client sends a request to port 2336 and the appleugcontrol 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 2336 dangerous?

We have no specific security note for port 2336. 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 2336

ServicePortTransportDescriptionReferenceUpdated
appleugcontrol 2336 TCP, UDP Apple UG Control - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 2336, and is it reachable?

Linux

sudo ss -ltnup 'sport = :2336'      # process listening on 2336
sudo lsof -nP -i :2336

macOS

sudo lsof -nP -i :2336

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 2336 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 2336
netstat -ano | findstr :2336

From another machine

nmap -p 2336 -sV <host>
sudo nmap -sU -p 2336 <host>
nc -zv <host> 2336

Block it in the firewall

sudo ufw deny 2336/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 2336" -Direction Inbound -LocalPort 2336 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 2336 used for?

Port 2336 is assigned by IANA to appleugcontrol (Apple UG Control).

Is port 2336 TCP or UDP?

Port 2336 is registered for TCP and UDP.

Is it safe to open port 2336?

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 2336 is open?

On Linux run "ss -ltnup 'sport = :2336'", on macOS "lsof -nP -i :2336", and on Windows "netstat -ano | findstr :2336" to see the local process. From another machine, "nmap -p 2336 <host>" shows whether it is reachable.

05 Related
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