Forms authentication allows you to configure a SharePoint page as a login form instead of utilizing Windows authentication directly. SharePoint supports many different providers for authenticating users against other data stores such as SQL Server or an LDAP service. In this exercise, you will make use of the ActiveDirectoryMembershipProvider to configure Forms authentication against Active Directory. In this scenario, users will enter their Windows credentials into the login form to gain access to the secure site.
Follow these steps to set up Forms authentication:
1. Log in to <machine> as the local administrator.
2. Open the File Explorer and navigate to \Inetpub\wwwroot\wss\VirtualDirectories.
3. Under the VirtualDirectories folder, identify the subdirectory that is associated with your site and the folder associated with the Central Administration site.
4. Open the web.config file for both the extranet site and the Central Administration site. The provider information must be added to both files.
5. Directly above the <system.web> tag in both files, add the following section to define a connection to Active Directory:
<connectionStrings>
<add name="ADService" connectionString="LDAP://vspdc.domain.
local/DC=domain,DC=local" />
</connectionStrings>
6. Directly underneath the <system.web> tag in both files, add the following section to utilize the ActiveDirectoryMembershipProvider as the authentication provider:
<membership defaultProvider="AD">
<providers>
<add name="AD"
type="System.Web.Security.ActiveDirectoryMembershipProvider,
System.Web, Version=2.0.0.0, Culture=neutral,
PublickeyToken=b03f5f7f11d50a3a"
connectionStringName="ADService"
connectionUsername="DOMAIN\Administrator"
connectionPassword="P@ssw0rd"
connectionProtection="None"
attributeMapUsername="sAMAccountName" />
</providers>
</membership>
7. Save and close both files.
8. Select Start > Run. In the Run dialog, type iisreset and click the Open button.
9. Open the Central Administration site by selecting Start Administrative Tools SharePoint 3.0 Central Administration.
10. In the Central Administration site, click the Application Management tab.
11. Under the Application Security section, click the link titled Authentication Providers.
12. If the correct web application is not already selected, drop down the Web Application selection list and click Change Web Application. Then click the link for the initial web application that you set up.
13. On the Authentication Providers page, click the Windows link associated with the Extranet zone.
14. On the Edit Authentication page, select Forms as the Authentication Type.
15. In the Membership Provider Name field, type AD, which is the name of the provider as it appears in the web.config file.
16. Click the Save button.
17. In the Central Administration site, click the Application Management tab.
18. Under the Application Security section, click the link titled Policy for Web Application.
19. If the correct web application is not already selected, drop down the Web Application selection list and click Change Web Application. Then click the link for the initial web application that you set up.
20. Click the Add Users button.
21. On the Add Users page, select Extranet from the zone list.
22. Click the Next button.
23. On the Add Users page, type Administrator into the Users field and click the Check Names image button.
24. Under the Choose Permissions section, check the box labeled Full Control – Has Full Control.
25. Click the Finish button.
