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