Port 9255
mon · TCP/UDP
| Range | Registered port (1024–49151) |
|---|---|
| Protocol | TCP/UDP |
| Service | mon |
| Registered | 2007-05 |
Frequently asked questions
What is port 9255 used for?
Port 9255 is registered with the IANA for mon (TCP/UDP). Description: Manager On Network.
Is port 9255 a well-known port?
No. Port 9255 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.
How do I check whether port 9255 is open?
Locally on Linux with ss -tulpn | grep ':9255\b', on Windows with netstat -ano | findstr :9255. To test a remote host use Test-NetConnection <host> -Port 9255 in PowerShell or nc -zv <host> 9255 on Linux/macOS.
How do I open port 9255 in the firewall?
Ubuntu/Debian (ufw): sudo ufw allow 9255/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=9255/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 9255" -Direction Inbound -Protocol TCP -LocalPort 9255 -Action Allow.
IANA registry entries
| Protocol | Service | Description (IANA) |
|---|---|---|
| TCP | mon | Manager On Network |
| UDP | mon | Manager On Network |