How-To

NX

On my post about XDMCP I mentioned that there was a better way to open a X session on a remote computer.

After reading this post you'll see why I left it at the end of this blog therad: NX uses elements and concepts explained on the previous posts (SSH, X forwarding, XDMCP, VNC)

VNC (Virtual Network Computing )

Up to now the graphical solutions I've shown were focused on accessing the X desktop. I've also focused on accessing a session exclusively.

On this post I will talk about a tool that is OS independent. You can share a Mac or Windows or Linux desktop and that allows remote collaboration with multiple people looking and controlling the same desktop.

VNC uses the RFB protocol to transmit keyboard and mouse signals to remote computer and receive back the graphical screen.

XDMCP

XDMCP stands for X Display manager control protocol.

The display system used in Linux was designed from the beginning as a network protocol, where the system and programs run in one computer and the display being shown on another.

The XDMCP protocol allows you to login graphically to a remote computer.

It is not a very fast protocol and these days there are better ways to achieve the same effect in a more efficient manner.

As of Gnome 2.2 and KDE 4 support for XDMCP login on the GDM/KDM login screen was dropped.

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