rdesktop is an open source client for Windows Remote Desktop Services, capable of natively speaking Remote Desktop Protocol (RDP) in order to present the user’s Windows desktop. rdesktop is known to work with Windows versions such as NT 4 Terminal Server, 2000, XP, 2003, 2003 R2, Vista, 2008, 7, and 2008 R2. Click Here.
You can install the package using yum like the below :
# rpm -qa rdesktop
Regarding to website to connect Windows from linux you need to use -u which indicate for username follows with hostname to be like this
# rdesktop -u Administrator osama
Osama : hostname
Administrator : Username
Useful !!!
Thank you
Osama mustafa
Technology Geek 