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== Remote Access ==

==== Remote Login via XDMCP ====

===== What is XDMCP? =====

GNOME windows can support several different users simultaniously.  Unlike vncviewer that just duplicates the current screen on a remote system, XDMCP allows several different users to login and run different GNOME sessions at the same time.  So if you have a fast computer runing Ubuntu, several users can use their slow machines to login and run heavy applications only available on the fast machine.

===== How to turn on the XDMCP feature =====
To turn on the XDMCP feature on the fast computer, click the menu
 System -> Administration -> Login Window 

In the Login Window Preferences dialog window, select
 Remote Tab -> Style: Same as Local ->  Close the dialog window -> Restart the PC

===== How to login from another PC running Ubuntu =====
 1. Reboot the slow PC and stop at the login screen
 2. Click Options at the lower left corner of the login screen
 3. Select "Remote Login via XDMCP"
 4. On the dialog window, type in the host name or ip of the fast computer you want to login to


==== Remote Desktop Sharing/Duplication via VNC ====

===== How to configure remote desktop (not secure) =====

*Read [[#General Notes]]

:''Warning! Remote Desktop will only work if there's a GNOME login session''
:''     Leaving computer with an unattended GNOME login session is not secure''
:''     Use (System -> Lock Screen) and switch off the monitor when computer is left unattended''

*System -> Preferences -> Remote Desktop
*Remote Desktop Preferences

 Sharing ->
 Allow other users to view your desktop ('''Checked''')
 Allow other users to control your desktop ('''Checked''')

 Security ->
 Ask you for confirmation (Un-Checked)
 Require the user to enter this password: ('''Checked''')
 Password: Specify the password

===== How to connect into remote Ubuntu desktop =====

*Read [[#General Notes]]

:''e.g. Assumed that remote Ubuntu machine have configured Remote Desktop''
:''   Read [[#How to configure remote desktop (not secure)]]''
:''   Remote Ubuntu machine: 192.168.0.1''

 vncviewer -fullscreen 192.168.0.1:0

*To quit vncviewer

 Press 'F8' -> Quit viewer

===== How to connect into remote Ubuntu desktop via Windows machine =====

*Read [[#General Notes]]

:''e.g. Assumed that remote Ubuntu machine have configured Remote Desktop''
:''   Read [[#How to configure remote desktop (not secure)]]''
:''   Remote Ubuntu machine: 192.168.0.1''

*If you have a router remember to open the appropiate port. The default one is 5900
:''   This process is called port forwarding [http://en.wikipedia.org/wiki/Port_forwarding port forwarding]

*Download DotNetVNC: [http://dotnetvnc.sourceforge.net/ Here] or RealVNC [http://www.realvnc.com/ Here]
:''   this is a free DotNet version that require the DotNet framework available from microsoft [http://msdn.microsoft.com/netframework/ here]
:''   The RealVNC website was created and maintained by the original developers of VNC during their time at AT&T.  RealVNC comes in Free, Personal, and Enterprise editions - the latter two costing money.

*Open the VNC client you have chosen, and insert the connection string formatted like this <LINUX BOX IP><:DESKTOP NUMBER>|<::PORT>
:''   In example use: 192.168.1.2:0 or 192.168.1.2::5900 to connect to desktop 0, to connect to desktop 1 use 192.168.1.2:1 or 192.168.1.2::5901 and so on

===== How to connect into remote Ubuntu desktop via OSX =====

*Read [[#General Notes]]

:''e.g. Assumed that remote Ubuntu machine have configured Remote Desktop''
:''   Read [[#How to configure remote desktop (not secure)]]''
:''   Remote Ubuntu machine: 192.168.0.1''

*If you have a router remember to open the appropiate port the default one is 5900
:''   This process is called port forwarding [http://en.wikipedia.org/wiki/Port_forwarding port forwarding]

*Download ChickenOfTheVNC: [http://sourceforge.net/projects/cotvnc/ Here]

*Open ChickenOfTheVNC, and insert the host (IP address of remote machine), the display number (0 is default and is port 5900) and the password.
:''   In example use: Host: 192.168.0.1, Display 0, Password: password