What is Anonymous Authentication?
> In Anonymous Authentication, any user can access the Application.
> IIS allows all type of users to enter the Application without entering any credential.
> Anonymous Authentication can be enabled for both internet and intranet environment.
What is Windows Authentication?
> Windows Authentication is mainly used in Intranet Environment.
> We can enable Windows Authentication in IIS and IIS Express level.
> Windows Authentication is secure because the user name and password are hashed
> before sending across the network.
> There may be two types of protocols in Windows Authentication. Kerbose and NTLM.
> After windows authentication installation, the default protocol will be Kerbose.
How To Implement Windows and Anonymous Authentication?
> For Implementing Windows Authentication, please follow the below link.
>
Click Here For Implementing Windows Authentication In IIS and IIS Express
> For Implementing
Anonymous Authentication, please follow the below steps.
> On Run type
inetmgr to open IIS.
> On IIS select your website.
> On Feature View, Click on the
Authentication Icon.
> That will leads to Authentication tab.
> Right Click on the
Anonymous Authentication and click the Enable Link as shown in the figure.

>
By this way we can Implement Anonymous Authentication In IIS.
How To Implement Anonymous Authentication In IISExpress.
> Open the file
C:\Users\xxxxxx\Documents\IISExpress\config\applicationhost.xml on Notepad.
> Search for node
<authentication>.
> Inside
<authentication> node, navigate to subnode
<anonymousAuthentication>.
> Set
enable as
true inside
<anonymousAuthentication>.
> For all other sub nodes like
<windowsAuthentication>, <basicAuthentication>,
>
<digestAuthentication> etc... set
enable as
false.
>
By this way we can Implement Anonymous Authentication In IISExpress.
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