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Many users are familiar with SSL encrypted web pages that ask them for their username and password to log into a web site. Web browsers use visual cues such as a gold lock to indicate to users that their username and password will be transmitted securely over the Internet. For example, this is what Wells Fargo Bank customers see in the lower right hand corner of the Internet Explorer 6.0 and FireFox 1.0 browser browsers when they log into their account:
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Although SSL is widely used to allow users to securely log into a web site, it is not the only method that modern browsers support. Another method, which is just as seccure, is called Interated Windows Authentication (hereafter called IWA). Most web browsers (all versions of Internet Explorer, and recent versions of Gecko-based browsers such as FireFox 1.0) support IWA.
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