Port 3389 — RDP

TCP · Port 3389/TCP is used for Remote Desktop Protocol (RDP) connections, allowing users to remotely access and control Windows-based computers. This port is a common target for attacks as it provides unauthorized access to sensitive systems. Proper configuration and monitoring are essential to prevent exploitation.

Port Number: 3389
Service Name: RDP
Protocol: TCP
Common Software: Windows Remote Desktop

Security Notes

High-value attack target. Use Network Level Authentication. Enable firewall rules.

FAQ

What is port 3389 used for?

Port 3389 is used for RDP. Port 3389/TCP is used for Remote Desktop Protocol (RDP) connections, allowing users to remotely access and control Windows-based computers. This port is a common target for attacks as it provides unauthorized access to sensitive systems. Proper configuration and monitoring are essential to prevent exploitation. Common software: Windows Remote Desktop.

Is port 3389 dangerous to leave open?

High-value attack target. Use Network Level Authentication. Enable firewall rules.

How do I check if port 3389 is open?

Use nmap: nmap -p 3389 <target> or check locally: ss -tlnp | rg 3389