I'm new to ASP.NET :)

I have a WCF web service, and I want to use Basic authentication. I am getting lost in the authentication options:

• In IIS 6 Manager, I can go in to the properties of the web site and set authentication options.
• In the web site's web.config file, under system.web, there is an <authentication mode="Windows"/> tag
• In the web site's web.config file, under system.serviceModel, I can configure:

   <wsHttpBinding>
      <binding name="MyBinding">
        <security mode="Transport">
          <transport clientCredentialType="Basic"/>
        </security>
      </binding>
   </wsHttpBinding>
   

What is the difference between these three? How should each be configured?

Some context: I have a simple web site project that contains a single .svc web service, and I want it to use Basic authentication over SSL. (Also, I want it to not use Windows accounts, but maybe that is another question.)