IIS 6.0 supports the following authentication methods: 

? Anonymous authentication. This authentication method 
allows everyone access to the public areas of your Web 
sites, without asking for a user name or password.
 
? Basic authentication. This authentication method prompts 
the user for a user name and a password, also called 
credentials, which are sent unencrypted over the network.
 
? Digest authentication. This authentication method 
operates much like Basic authentication, except that 
passwords are sent across the network as a hash value for 
additional security. Digest authentication is available 
only on domains with domain controllers running Windows 
server operating systems.
 
? Advanced Digest authentication. This authentication 
method is identical to Digest authentication, except 
Advanced Digest authentication stores the client 
credentials as a Message Digest (MD5) hash in Active 
Directory on your domain controller running Windows Server 
2003.
 
? Integrated Windows authentication. This authentication 
method uses hashing technology to scramble user names and 
passwords before sending them over the network.
 
? UNC authentication. This authentication method passes 
users' credentials through to the computer with the 
Universal Naming Convention (UNC) share.
 
? .NET Passport Authentication. This authentication method 
is a user-authentication service that lets Web site users 
create a single sign-in name and password for access to 
all .NET Passport?enabled Web sites and services. .NET 
Passport?enabled sites rely on the .NET Passport central 
server to authenticate users; .NET Passport?enabled sites 
do not host and maintain their own proprietary 
authentication systems.
 
? Certificate authentication. This authentication method 
uses Secure Sockets Layer (SSL) certificates to 
authenticate servers and clients.
 

IIS 6.0 supports the following authentication methods: 

? Anonymous authentication. This authentication method 
allows everyone access to the public areas of your Web 
sites, without asking for a user name or password.
 
? Basic authentication. This authentication method prompts 
the user for a user name and a password, also called 
credentials, which are sent unencrypted over the network.
 
? Digest authentication. This authentication method 
operates much like Basic authentication, except that 
passwords are sent across the network as a hash value for 
additional security. Digest authentication is available 
only on domains with domain controllers running Windows 
server operating systems.
 
? Advanced Digest authentication. This authentication 
method is identical to Digest authentication, except 
Advanced Digest authentication stores the client 
credentials as a Message Digest (MD5) hash in Active 
Directory on your domain controller running Windows Server 
2003.
 
? Integrated Windows authentication. This authentication 
method uses hashing technology to scramble user names and 
passwords before sending them over the network.
 
? UNC authentication. This authentication method passes 
users' credentials through to the computer with the 
Universal Naming Convention (UNC) share.
 
? .NET Passport Authentication. This authentication method 
is a user-authentication service that lets Web site users 
create a single sign-in name and password for access to 
all .NET Passport?enabled Web sites and services. .NET 
Passport?enabled sites rely on the .NET Passport central 
server to authenticate users; .NET Passport?enabled sites 
do not host and maintain their own proprietary 
authentication systems.
 
? Certificate authentication. This authentication method 
uses Secure Sockets Layer (SSL) certificates to 
authenticate servers and clients.

IIS 6.0 supports the following authentication methods: 

? Anonymous authentication. This authentication method 
allows everyone access to the public areas of your Web 
sites, without asking for a user name or password.
 
? Basic authentication. This authentication method prompts 
the user for a user name and a password, also called 
credentials, which are sent unencrypted over the network.
 
? Digest authentication. This authentication method 
operates much like Basic authentication, except that 
passwords are sent across the network as a hash value for 
additional security. Digest authentication is available 
only on domains with domain controllers running Windows 
server operating systems.
 
? Advanced Digest authentication. This authentication 
method is identical to Digest authentication, except 
Advanced Digest authentication stores the client 
credentials as a Message Digest (MD5) hash in Active 
Directory on your domain controller running Windows Server 
2003.
 
? Integrated Windows authentication. This authentication 
method uses hashing technology to scramble user names and 
passwords before sending them over the network.
 
? UNC authentication. This authentication method passes 
users' credentials through to the computer with the 
Universal Naming Convention (UNC) share.
 
? .NET Passport Authentication. This authentication method 
is a user-authentication service that lets Web site users 
create a single sign-in name and password for access to 
all .NET Passport?enabled Web sites and services. .NET 
Passport?enabled sites rely on the .NET Passport central 
server to authenticate users; .NET Passport?enabled sites 
do not host and maintain their own proprietary 
authentication systems.
 
? Certificate authentication. This authentication method 
uses Secure Sockets Layer (SSL) certificates to 
authenticate servers and clients.