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TABLE 1: IIS 5.0 Authentication Methods
Authentication Method Security Level Server Requirements Client Requirements Comments
Anonymous None IUSR_computername or similar account Any browser Used for public areas of Internet sites
Basic Low Valid accounts on server Enter username and password Transmits password in clear text
Digest High Plain clear text copy of every password; valid accounts. Browsers that support HTTP 1.1 Usable across proxy servers and firewalls
Integrated Windows High Valid accounts Browser support Suitable for private areas of intranets
Certificate High Obtain server certificates and configure certificate trust lists (for first use only) Browser support Widely used for secure transactions over the Internet
FTP Anonymous None IUSR_computername or similar account None Used for public areas of FTP sites
FTP Basic Low Valid accounts on server Enter username and password Transmits password in clear text
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