Port 3273
sxmp · TCP/UDP
| Range | Registered port (1024–49151) |
|---|---|
| Protocol | TCP/UDP |
| Service | sxmp |
Frequently asked questions
What is port 3273 used for?
Port 3273 is registered with the IANA for sxmp (TCP/UDP). Description: Simple Extensible Multiplexed Protocol.
Is port 3273 a well-known port?
No. Port 3273 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.
How do I check whether port 3273 is open?
Locally on Linux with ss -tulpn | grep ':3273\b', on Windows with netstat -ano | findstr :3273. To test a remote host use Test-NetConnection <host> -Port 3273 in PowerShell or nc -zv <host> 3273 on Linux/macOS.
How do I open port 3273 in the firewall?
Ubuntu/Debian (ufw): sudo ufw allow 3273/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=3273/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 3273" -Direction Inbound -Protocol TCP -LocalPort 3273 -Action Allow.
IANA registry entries
| Protocol | Service | Description (IANA) |
|---|---|---|
| TCP | sxmp | Simple Extensible Multiplexed Protocol |
| UDP | sxmp | Simple Extensible Multiplexed Protocol |