Port 3389

Q: What is port 3389?

Windows Remote Desktop graphical remote access (RDP) RDP (Remote Desktop Protocol) on port 3389 provides graphical remote access to Windows systems. It is widely used for remote work, server management, and IT support. It is one of the most heavily attacked ports on the internet, subject to brute-force attacks, the BlueKeep wormable exploit (CVE-2019-0708), and as a ransomware delivery mechanism. Never expose RDP directly to the internet — place it behind a VPN or RD Gateway, and always enable NLA (Network Level Authentication).

RDP

Windows Remote Desktop graphical remote access (RDP)

Port

3389

Protocol

TCP

Service

RDP

Security

Dangerous

Full name: Remote Desktop Protocol

What is port 3389?

RDP (Remote Desktop Protocol) on port 3389 provides graphical remote access to Windows systems. It is widely used for remote work, server management, and IT support. It is one of the most heavily attacked ports on the internet, subject to brute-force attacks, the BlueKeep wormable exploit (CVE-2019-0708), and as a ransomware delivery mechanism. Never expose RDP directly to the internet — place it behind a VPN or RD Gateway, and always enable NLA (Network Level Authentication).

Related ports

← All ports