Port 5221
3exmp · TCP/UDP
| Range | Registered port (1024–49151) |
|---|---|
| Protocol | TCP/UDP |
| Service | 3exmp |
| Registered | 2010-05-19 |
Frequently asked questions
What is port 5221 used for?
Port 5221 is registered with the IANA for 3exmp (TCP/UDP). Description: 3eTI Extensible Management Protocol for OAMP; Reserved.
Is port 5221 a well-known port?
No. Port 5221 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.
How do I check whether port 5221 is open?
Locally on Linux with ss -tulpn | grep ':5221\b', on Windows with netstat -ano | findstr :5221. To test a remote host use Test-NetConnection <host> -Port 5221 in PowerShell or nc -zv <host> 5221 on Linux/macOS.
How do I open port 5221 in the firewall?
Ubuntu/Debian (ufw): sudo ufw allow 5221/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=5221/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 5221" -Direction Inbound -Protocol TCP -LocalPort 5221 -Action Allow.
IANA registry entries
| Protocol | Service | Description (IANA) |
|---|---|---|
| TCP | 3exmp | 3eTI Extensible Management Protocol for OAMP |
| UDP | – | Reserved |