ASP.NET - IIS 身份验证 Authentication
IIS provides a variety of authentication schemes:
- Anonymous (enabled by default)
- Basic
- Digest
- Integrated Windows authentication (enabled by default)
- Client Certificate Mapping
Regardless of which method you choose, after IIS authenticates the client it will pass a security token to ASP.NET.
http://msdn.microsoft.com/en-us/library/aa292114(VS.71).aspx