Port 6789
radg · TCP/UDP
| Range | Registered port (1024–49151) |
|---|---|
| Protocol | TCP/UDP |
| Service | radg |
| Registered | 2002-08 |
| Modified | 2016-09-15 |
Frequently asked questions
What is port 6789 used for?
Port 6789 is registered with the IANA for radg (TCP/UDP). Description: GSS-API for the Oracle Remote Administration Daemon; Reserved.
Is port 6789 a well-known port?
No. Port 6789 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.
How do I check whether port 6789 is open?
Locally on Linux with ss -tulpn | grep ':6789\b', on Windows with netstat -ano | findstr :6789. To test a remote host use Test-NetConnection <host> -Port 6789 in PowerShell or nc -zv <host> 6789 on Linux/macOS.
How do I open port 6789 in the firewall?
Ubuntu/Debian (ufw): sudo ufw allow 6789/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=6789/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 6789" -Direction Inbound -Protocol TCP -LocalPort 6789 -Action Allow.
IANA registry entries
| Protocol | Service | Description (IANA) |
|---|---|---|
| TCP | radg | GSS-API for the Oracle Remote Administration Daemon |
| UDP | – | Reserved |