Port 4089

opencore · TCP/UDP

RangeRegistered port (1024–49151)
ProtocolTCP/UDP
Serviceopencore
Registered2006-07

Frequently asked questions

What is port 4089 used for?

Port 4089 is registered with the IANA for opencore (TCP/UDP). Description: OpenCORE Remote Control Service.

Is port 4089 a well-known port?

No. Port 4089 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.

How do I check whether port 4089 is open?

Locally on Linux with ss -tulpn | grep ':4089\b', on Windows with netstat -ano | findstr :4089. To test a remote host use Test-NetConnection <host> -Port 4089 in PowerShell or nc -zv <host> 4089 on Linux/macOS.

How do I open port 4089 in the firewall?

Ubuntu/Debian (ufw): sudo ufw allow 4089/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=4089/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 4089" -Direction Inbound -Protocol TCP -LocalPort 4089 -Action Allow.

IANA registry entries

ProtocolServiceDescription (IANA)
TCPopencoreOpenCORE Remote Control Service
UDPopencoreOpenCORE Remote Control Service

Nearby entries