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Wednesday, March 6, 2019

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Azure Active Directory hybrid identity and authentication solution


Choosing the correct authentication method is the first concern for organizations wanting to move their apps to the cloud. Don't take this decision lightly, for the following reasons:
  1. It's the first decision for an organization that wants to move to the cloud.
  2. The authentication method is a critical component of an organization’s presence in the cloud. It controls access to all cloud data and resources.
  3. It's the foundation of all the other advanced security and user experience features in Azure AD.
  4. The authentication method is difficult to change after it's implemented.


Authentication methods

  1.        Cloud authentication
  2.        Azure AD password hash synchronization.
  3.       Azure AD Pass-through Authentication
  4.        Federated authentication


Cloud authentication

When you choose this authentication method, Azure AD handles users' sign-in process. Coupled with seamless single sign-on (SSO), users can sign in to cloud apps without having to reenter their credentials. With cloud authentication, you can choose from two options:

Azure AD password hash synchronization


 The simplest way to enable authentication for on-premises directory objects in Azure AD. Users can use the same username and password that they use on-premises without having to deploy any additional infrastructure. Some premium features of Azure AD, like Identity Protection, require password hash synchronization for no matter which authentication method you choose










With AD Connect you have 2 option for sync you can choose according to your requirement

1.       Directory Sync: - only your user will be sync
2.       Password Hash Sync: - user and password both sync



Azure AD Pass-through Authentication.

Provides a simple password validation for Azure AD authentication services by using a software agent that runs on one or more on-premises servers. The servers validate the users directly with your on-premises Active Directory, which ensures that the password validation doesn't happen in the cloud.
Companies with a security requirement to immediately enforce on-premises user account states, password policies, and sign-in hours might use this authentication method. For more information on the actual pass-through authentication process, see User sign-in with Azure AD pass-through authentication.














Federated authentication

When you choose this authentication method, Azure AD hands off the authentication process to a separate trusted authentication system, such as on-premises Active Directory Federation Services (AD FS), to validate the user’s password.
The authentication system can provide additional advanced authentication requirements. Examples are smartcard-based authentication or third-party multifactor authentication. For more information, see Deploying Active Directory Federation Services.












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