Port 5900

Q: What is port 5900?

Graphical remote desktop access (VNC) VNC (Virtual Network Computing) on port 5900 provides graphical remote desktop access to Windows, macOS, and Linux systems. Multiple virtual displays use sequential ports (5900+N: 5900, 5901, 5902, etc.). Security varies greatly by implementation — many VNC servers have weak or no authentication. Never expose VNC directly to the internet; always tunnel it through SSH or a VPN.

VNC

Graphical remote desktop access (VNC)

Port

5900

Protocol

TCP

Service

VNC

Security

Dangerous

Full name: Virtual Network Computing

What is port 5900?

VNC (Virtual Network Computing) on port 5900 provides graphical remote desktop access to Windows, macOS, and Linux systems. Multiple virtual displays use sequential ports (5900+N: 5900, 5901, 5902, etc.). Security varies greatly by implementation — many VNC servers have weak or no authentication. Never expose VNC directly to the internet; always tunnel it through SSH or a VPN.

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