Port 3343
ms-cluster-net · TCP/UDP
| Range | Registered port (1024–49151) |
|---|---|
| Protocol | TCP/UDP |
| Service | ms-cluster-net |
| Registered | 2009-02-12 |
Frequently asked questions
What is port 3343 used for?
Port 3343 is registered with the IANA for ms-cluster-net (TCP/UDP). Description: MS Cluster Net.
Is port 3343 a well-known port?
No. Port 3343 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.
How do I check whether port 3343 is open?
Locally on Linux with ss -tulpn | grep ':3343\b', on Windows with netstat -ano | findstr :3343. To test a remote host use Test-NetConnection <host> -Port 3343 in PowerShell or nc -zv <host> 3343 on Linux/macOS.
How do I open port 3343 in the firewall?
Ubuntu/Debian (ufw): sudo ufw allow 3343/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=3343/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 3343" -Direction Inbound -Protocol TCP -LocalPort 3343 -Action Allow.
IANA registry entries
| Protocol | Service | Description (IANA) |
|---|---|---|
| TCP | ms-cluster-net | MS Cluster Net |
| UDP | ms-cluster-net | MS Cluster Net |