Port 12004
entextlow · TCP/UDP
| Range | Registered port (1024–49151) |
|---|---|
| Protocol | TCP/UDP |
| Service | entextlow |
Frequently asked questions
What is port 12004 used for?
Port 12004 is registered with the IANA for entextlow (TCP/UDP). Description: IBM Enterprise Extender SNA COS Low Priority.
Is port 12004 a well-known port?
No. Port 12004 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.
How do I check whether port 12004 is open?
Locally on Linux with ss -tulpn | grep ':12004\b', on Windows with netstat -ano | findstr :12004. To test a remote host use Test-NetConnection <host> -Port 12004 in PowerShell or nc -zv <host> 12004 on Linux/macOS.
How do I open port 12004 in the firewall?
Ubuntu/Debian (ufw): sudo ufw allow 12004/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=12004/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 12004" -Direction Inbound -Protocol TCP -LocalPort 12004 -Action Allow.
IANA registry entries
| Protocol | Service | Description (IANA) |
|---|---|---|
| TCP | entextlow | IBM Enterprise Extender SNA COS Low Priority |
| UDP | entextlow | IBM Enterprise Extender SNA COS Low Priority |