Port 447
ddm-dfm · TCP/UDP
| Range | System/well-known port (0–1023) |
|---|---|
| Protocol | TCP/UDP |
| Service | ddm-dfm |
Frequently asked questions
What is port 447 used for?
Port 447 is registered with the IANA for ddm-dfm (TCP/UDP). Description: DDM-Distributed File Management.
Is port 447 a well-known port?
Yes. Port 447 is in the range 0–1023 (system or well-known ports). On Linux and macOS only privileged processes may bind to these ports.
How do I check whether port 447 is open?
Locally on Linux with ss -tulpn | grep ':447\b', on Windows with netstat -ano | findstr :447. To test a remote host use Test-NetConnection <host> -Port 447 in PowerShell or nc -zv <host> 447 on Linux/macOS.
How do I open port 447 in the firewall?
Ubuntu/Debian (ufw): sudo ufw allow 447/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=447/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 447" -Direction Inbound -Protocol TCP -LocalPort 447 -Action Allow.
IANA registry entries
| Protocol | Service | Description (IANA) |
|---|---|---|
| TCP | ddm-dfm | DDM-Distributed File Management |
| UDP | ddm-dfm | DDM-Distributed File Management |