[ubuntu] Remote desktop access

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http://ubuntuforums.org – The Remote Desktop access option is not visible in Ubuntu 12.10 . I need to access remotely Ubuntu desktop from a windows PC or a thin client via RDP . I tried Xterm , but i need to press f2 or f3 for the desktop and also there is no proper option for log off and killing any open applications . Kindly let me know if anyone has done the same before (Hardware)