Mr. Ratdhian Sukmana is a Professional System Administrator in the One of Biggest Advertising company at Indonesia. He has over 7 years experience in IT Duties. His experience focuses on Server configuration, Network and IT Security. He joined to several Mailing List and also contribute as writer to share his Experience on www.ilmukomputer.com. His contact number is 081310618205 and please Visit his personal Blogs at http://ratdix.wordpress.com, you can read many nice articles about his Linux experience.