Chapter 15. Authentication
IN THIS CHAPTER
Authentication is the process of verifying a user's identity against some authority such as an XML file or a database. Authentication is analogous to visiting an airport. Visitors are allowed in and can go into some areas. To get into other areas, such as the baggage handling area, a person must provide credentials to prove that he has the security clearance appropriate for the area. The level of clearance that a particular person has determines into which areas he is allowed. Web site authentication works in a similar fashion. With many Web sites, any visitor can view a portion of the Web site. ...
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