Implementing microsoft windows sharepoint services

For more information, see Plan for server-to-server authentication in SharePoint Server. When you use claims-based authentication, all supported authentication methods are available for your web applications and you can take advantage of new features and scenarios in SharePoint Server that use server-to-server authentication and app authentication.

For claims-based authentication, SharePoint Server automatically changes all user accounts to claims identities. This changes results in a security token also known as a claims token for each user. The claims token contains the claims pertaining to the user. Windows accounts are converted into Windows claims. Forms-based membership users are transformed into forms-based authentication claims. Additionally, SharePoint developers and administrators can augment user tokens with more claims.

For example, Windows user accounts and forms-based accounts can be augmented with extra claims that are used by SharePoint Server. You do not have to be a claims architect to use claims-based authentication in SharePoint Server.

However, implementing SAML token-based authentication requires coordination with administrators of your claims-based environment, as described in Plan for SAML token-based authentication. In SharePoint , when you create a web application in Central Administration, you can only specify authentication types and methods for claims-based authentication.

In previous versions of SharePoint, you could also configure classic mode authentication for web applications in Central Administration.

To configure a web application to use classic mode authentication, you must use the New-SPWebApplication PowerShell cmdlet to create it.

SharePoint Products web applications that are configured for classic mode authentication retain their authentication settings when you upgrade to SharePoint However, we recommend that you migrate your web applications to claims-based authentication before upgrading to SharePoint A SharePoint farm can include a mix of web applications that use both modes.

Some services do not differentiate between user accounts that are traditional Windows accounts and Windows claims accounts. For more information about migrating before upgrading, see Migrate from classic-mode to claims-based authentication. For more information about migrating after upgrading, see Migrate from classic-mode to claims-based authentication in SharePoint Server. For information about how to create web applications that use classic mode authentication in SharePoint , see Create web applications that use classic mode authentication in SharePoint Server.

You cannot migrate a web application that uses claims-based authentication to use classic mode authentication. Office Online can be used only by SharePoint web applications that use claims-based authentication. Office Online rendering and editing will not work on SharePoint web applications that use classic mode authentication. If you migrate SharePoint web applications that use classic mode authentication to SharePoint , you must migrate them to claims-based authentication to allow them to work with Office Online.

SharePoint Server supports various authentication methods and authentication providers for the following authentication types:. The Windows authentication type takes advantage of your existing Windows authentication provider AD DS and the authentication protocols that a Windows domain environment uses to validate the credentials of connecting clients.

Windows authentication method, which is used by both claims-based authentication include:. For more information, see Plan for Windows authentication in this article. Although not a Windows authentication type, SharePoint Server also supports anonymous authentication. Users can access SharePoint content without validating their credentials.

Anonymous authentication is disabled by default. You typically use anonymous authentication when you use SharePoint Server to publish content that does not require security and is available for all users, such as a public Internet website. In addition to enabling anonymous authentication, you must also configure anonymous access permissions on sites and site resources. Forms-based authentication is a claims-based identity management system that is based on ASP. NET membership and role provider authentication.

Forms-based authentication can be used against credentials that are stored in an authentication provider, such as:. Forms-based authentication validates users based on credentials that users type in a logon form typically a web page. Unauthenticated requests are redirected to a logon page, where a user must provide valid credentials and submit the form. The system issues a cookie for authenticated requests that contains a key for reestablishing the identity for subsequent requests. With forms-based authentication, the user account credentials are sent as plaintext.

Therefore, you should not use forms-based authentication unless you are also using Secure Sockets Layer SSL to encrypt the website traffic. For more information, see Plan for forms-based authentication. It requires coordination with administrators of a claims-based environment, whether it is your own internal environment or a partner environment.

Tokens can include any number of claims about a user, such as a user name and the groups to which the user belongs. An AD FS 2. A relying party application receives the SAML token and uses the claims inside to decide whether to grant the client access to the requested resource. If you use AD FS 2. Use the authentication type that matches your current LDAP environment.

If you do not already have an LDAP environment, we recommend that you use forms-based authentication because it is less complex.

However, if your authentication environment already supports WS-Federation 1. The process of planning and implementing Windows authentication methods is similar for claims-based authentication. Claims-based authentication for a web application does not increase the complexity of implementing Windows authentication methods.

This section summarizes the planning for the Windows authentication methods. Both NTLM and the Kerberos protocol are Integrated Windows authentication methods, which let users seamlessly authenticate without prompts for credentials. For example:. Users who access SharePoint sites from Internet Explorer use the credentials under which the Internet Explorer process is running to authenticate. By default, these credentials are the credentials that the user used to log on to the computer.

Services or applications that use Integrated Windows authentication methods to access SharePoint resources attempt to use the credentials of the running thread, which by default is the identity of the process, to authenticate. NTLM is the simplest form of Windows authentication to implement and typically requires no extra configuration of authentication infrastructure.

Select this option when you create or configure the web application. The Kerberos protocol supports ticketing authentication. Use of the Kerberos protocol requires more configuration of the environment. To enable Kerberos authentication, the client and server computers must have a trusted connection to the domain Key Distribution Center KDC.

The Kerberos protocol is the strongest Integrated Windows authentication protocol, and supports advanced security features including Advanced Encryption Standard AES encryption and mutual authentication of clients and servers. Of the available secure authentication methods, Kerberos requires the least amount of network traffic to AD DS domain controllers.

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