Port 3389
ms-wbt-server · TCP/UDP
| Range | Registered port (1024–49151) |
|---|---|
| Protocol | TCP/UDP |
| Service | ms-wbt-server |
| Modified | 2022-11-03 |
Frequently asked questions
What is port 3389 used for?
Port 3389 is registered with the IANA for ms-wbt-server (TCP/UDP). Description: MS WBT Server.
Is port 3389 a well-known port?
No. Port 3389 is in the range 1024–49151 (registered or user ports). Ordinary programs may open it without root privileges.
How do I check whether port 3389 is open?
Locally on Linux with ss -tulpn | grep ':3389\b', on Windows with netstat -ano | findstr :3389. To test a remote host use Test-NetConnection <host> -Port 3389 in PowerShell or nc -zv <host> 3389 on Linux/macOS.
How do I open port 3389 in the firewall?
Ubuntu/Debian (ufw): sudo ufw allow 3389/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=3389/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 3389" -Direction Inbound -Protocol TCP -LocalPort 3389 -Action Allow.
IANA registry entries
| Protocol | Service | Description (IANA) |
|---|---|---|
| TCP | ms-wbt-server | MS WBT Server |
| UDP | ms-wbt-server | MS WBT Server |