Remote desktop win to linux

By Group 10

remote desktop Win to
linux


X-Window System Protocol


The X Window System Protocol, also known as X Window or X
Protocol, is a graphics architecture used as the graphical system
on Unix systems (primarily) and Linux systems.



X Window System (X Protocol) provides an inherently client/server
oriented base for displaying windowed graphics.



It manage a video system including "interactive" I/O devices such
as mice, keyboards, and some more unusual devices.



X Window System (X Protocol) has two primary versions: X10 and
X11


X Window Display Manager


XDM (in full, the X Window Display
Manager) is the default display manager
for the X Window System. It is a barebones X display manager.



It was introduced with X11 Release 3 in
October 1988, to support the standalone
X terminals that were just coming onto
the market.



It was written by Keith Packard.


GNOME Display Manager


GDM (the GNOME Display Manager) provides a
simpler alternative display manager for the X
Window System's XDM.



GDM allows users to customize or troubleshoot
settings without having to resort to a command line.
Users can pick their session type on a per-login
basis.



GDM also features easy customization with themes.


GNOME Display Manager

GDM in Redhat 9.0 (Linux)


X Display Manager Protocol


XDMCP stands for "X Display Manager Control Protocol" and is a network protocol.



It provides a way of running the X-Terminal to run on your PC (or MAC) and it uses
the X Server to provide a client/server interface between display hardware (the
mouse, keyboard, and video displays) and the desktop environment while also
providing both the windowing infrastructure and a standardized application interface
(quoted from XFree86 Project home page).



The X-Terminal can be displayed with an individual window or multiple windows,
based on your X window system's software capabilities and setup.

XDMCP & Gnome Display Manager (GDM)


GDM also supports the X Display Manager Protocol
(XDMCP) for managing remote displays



GDM listens to UDP port 177 and will respond to QUERY
and BROADCAST_QUERY requests by sending a
WILLING packet to the originator.



GDM can also be configured to honor INDIRECT queries
and present a host chooser to the remote display.



GDM will remember the user's choice and forward
subsequent requests to the chosen manager.



Since it is fairly easy to do denial of service attacks on the
XDMCP service, GDM incorporates a few features to
guard against attacks.


Enable XDMCP on redhat

In

Red Hat® Enterprise Linux® 4 and below the file /etc/X11/gdm/gdm.conf could be modified to
enable xdmcp. With Red Hat Enterprise Linux 5, the location to enable xdmcp has changed.
There are two ways that xdmcp can be enabled:
 Modify the file /etc/gdm/custom.conf and under the [xdmcp] section, add this line: Enable=true
 Alternately, the tool gdmsetup can be used. This is a gui-based tool to modify gdm.
Once one of these two steps are done – simply run gdm-restart and then login as desired user.


Remote desktop Linux using XDMCP


Download Xming

 Xming

is an implementation of the X
Window System for Microsoft
Windows operating systems,
including Windows XP, Windows
Server 2003 and Windows Vista


Remote desktop Linux using XDMCP


Step 1:

Click “Next”and select “Open session via XDMCP”

Remote desktop Linux using XDMCP


Step 2:

Click “Next”


Remote desktop Linux using XDMCP


Step 3:

enter the IP address of your Linux Remote Host
in the “Connect to host” input box and “Next”


Remote desktop Linux using XDMCP


Step 4:

Click “Finish” button


Remote desktop Linux using XDMCP


Result:

Click “Finish” button


Remote desktop Linux via SSH with
X11 Forwarding


Config file /etc/ssh/sshd_config
X11Forwarding yes



Install PUTTY, It is a wonderful free SSH
client .

*Note: Installed Xming


Remote desktop Linux via SSH with
X11 Forwarding


Step 1: launch Xming

Click “Next” button to “Finish” ^^ , it will show below


Remote desktop Linux via SSH with

X11 Forwarding


Step 1:

ck
a
l
B

it will show below

en
e
r
sc


Remote desktop Linux via SSH with
X11 Forwarding


Step 2: launch PUTTY

Click “Open” button


Remote desktop Linux via SSH with
X11 Forwarding


Step 3:

Click “Yes” button


Remote desktop Linux via SSH with
X11 Forwarding


Step 4: login to linux server

Click “Yes” button


Remote desktop Linux via SSH with
X11 Forwarding


Step 5: use gnome-session comand and
tab to Xming window (black screen) to
see result


Remote desktop Linux via SSH with
X11 Forwarding