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I am new to Sitecore Azure AD authentication setup. So I had followed the link (https://www.velir.com/blog/2019/07/01/integrating-identity-server-azure-active-directory-single-sign-sso-sitecore-91) to set up Azure AD owin authentication in Sitecore. Everything is working fine now.

Since I am following the persistent user creation process, now the client is asking to create only specific Azure AD security group members, if they do not exist in Sitecore back office. Currently, we are creating all the users who are present in Azure AD.

So could anyone help me how to restrict the user creation only based on a certain Azure AD group?

Below is my claims transformation configured in AzureAd.xml

 <ClaimsTransformations>
        <!--Place transformation rules here. -->
        <ClaimsTransformation1 type="Sitecore.Plugin.IdentityProviders.DefaultClaimsTransformation, Sitecore.Plugin.IdentityProviders">
          <SourceClaims>
            <Claim1 type="http://schemas.xmlsoap.org/ws/2005/05/identity/claims/upn" />
          </SourceClaims>
          <NewClaims>
            <Claim1 type="email" />
          </NewClaims>
        </ClaimsTransformation1 >
        <ClaimsTransformation2 type="Sitecore.Plugin.IdentityProviders.DefaultClaimsTransformation, Sitecore.Plugin.IdentityProviders">
          <SourceClaims>
            <Claim1 type="http://schemas.xmlsoap.org/ws/2005/05/identity/claims/name" />
          </SourceClaims>
          <NewClaims>
            <Claim1 type="name" />
          </NewClaims>
        </ClaimsTransformation2>
        <AzureADUserToAdminUser1 type="Sitecore.Plugin.IdentityProviders.DefaultClaimsTransformation, Sitecore.Plugin.IdentityProviders">
                <SourceClaims>
                  <Claim1 type="groups" value="420bttyc-8c0d-4c3e-a8df-30a4cea08f68" />
                </SourceClaims>
                <NewClaims>
                  <Claim1 type="role" value="sitecore\Sitecore Client Users" />
                </NewClaims>
              </AzureADUserToAdminUser1>
 </ClaimsTransformations>

Also Using CustomExternalUserBuilder for Unique username creation.

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  • Can you provide details of your ClaimsTransformations within the Sitecore.Plugin.IdentityProvider.AzureAd.xml' config file ? Are you using the default DefaultExternalUserBuilder ` or a custom one. To meet you requirements, you will need to add custom logic in your implementation of ExternalUserBuilder. You may consider reviewing my blog too 360agileweb.wordpress.com/2020/02/28/sitecore-host-part-three for extra pointers – Julius A Nov 25 '20 at 12:15
  • updated my ClaimsTransformations in question. Please check. – Prabhu Ranganathan Nov 26 '20 at 6:59
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Because you have now chosen to use Azure AD with your Sitecore Identity, Azure AD effectively becomes the single source of truth for your User Management. This is the whole point of configuring an external provider for Sitecore Identity as a Federation Gateway.

I will recommend to instead audit your Sitecore back office and clean up any existing local users corresponding to your Azure AD. Remember Azure AD is now responsible for the authentication and you no longer need to manage the same user twice in Sitecore. Your ClaimsTransformations section should define claim mappings to address Sitecore user mappings and Sirecore role assignments to meet your requirements.

Run the following query on against your Core DB to see full list of users:

SELECT U.* FROM aspnet_Users as U
JOIN aspnet_Membership as M on U.UserId = M.UserId
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  • How will this help me to restrict the user creation process? – Prabhu Ranganathan Nov 26 '20 at 10:53
  • If I understood your use case well, I recommend you change your solution to reflect the use of Azure AD provider as your single source of truth for users. You will need users being driven from Azure AD and not restrict them, which will be incongruous – Julius A Nov 26 '20 at 11:50
  • Azure AD is our single source of truth for the user already. But now I was asked to restrict only certain Azure AD group members will access the system and they don't even want to create other group of users in the Sitecore back office. – Prabhu Ranganathan Nov 26 '20 at 11:57
  • I will suggest you then instead create a new group in Azure AD which will have all the users that you need to access Sitecore. Then map this newly created Azure AD group instead of the current one<Claim1 type="groups" value="420bttyc-8c0d-4c3e-a8df-30a4cea08f68" /> – Julius A Nov 26 '20 at 16:30
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    I had followed that already but this ClaimsTransformation will not stop creating other group users in Sitecore. Other group users will be created and no access when we use this. But I need even stop creating user from other groups. I realize it would be possible with ExternalUserBuilder. Let me try and keep you updated. Thanks for all your efforts on this. – Prabhu Ranganathan Nov 27 '20 at 4:24

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