Authentication is a process that verifies the authenticity
of the user. And Authorization is the process
to check that what resources the authenticated user can have access to.
In ASP.NET there are the following types of Authentication:
:- Windows Authentication
:- Forms Authentication
:- Passport Authentication
:- Anonymous Authentication
Now we look at the syntax of the Authentication. Here we
describe it in the web.config file:
<system.web>
<authentication mode=”[Windows/Forms/Passport/None]”>
</authentication>
</system.web>