Port 12109
rets-ssl · TCP/UDP
| Range | Registered port (1024–49151) |
|---|---|
| Protocol | TCP/UDP |
| Service | rets-ssl |
| Registered | 2003-02 |
Frequently asked questions
What is port 12109 used for?
Port 12109 is registered with the IANA for rets-ssl (TCP/UDP). Description: RETS over SSL.
Is port 12109 a well-known port?
No. Port 12109 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.
How do I check whether port 12109 is open?
Locally on Linux with ss -tulpn | grep ':12109\b', on Windows with netstat -ano | findstr :12109. To test a remote host use Test-NetConnection <host> -Port 12109 in PowerShell or nc -zv <host> 12109 on Linux/macOS.
How do I open port 12109 in the firewall?
Ubuntu/Debian (ufw): sudo ufw allow 12109/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=12109/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 12109" -Direction Inbound -Protocol TCP -LocalPort 12109 -Action Allow.
IANA registry entries
| Protocol | Service | Description (IANA) |
|---|---|---|
| TCP | rets-ssl | RETS over SSL |
| UDP | rets-ssl | RETS over SSL |