How to redirect the authentication request of a particular federated domain in Azure from azure to on-premise AD via ADFS server - azure-active-directory

In our current, authentication request from azure to on-premise AD goes via a Optimal IDM tool (this is 3rd party tool which is being used for account synchronization and federation service). Now our requirement is to redirect the authentication request of a particular federated domain in Azure from azure to on-premise AD via ADFS server (instead of Optimal IDM tool).
kindly provide the steps/commands to achieve this.
Thanks
Sunil Sharma

Azure AD Connect would be your best bet now.
Detailed guidance is available here - https://learn.microsoft.com/en-us/azure/active-directory/connect/active-directory-aadconnectfed-whatis

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Multi-tenant Azure AD User Sync

I'm trying to figure out the best way to replicate an LDAP sync or a tool like Azure AD connect but for multiple Azure AD tenants to a single Azure AD B2C tenant. When a user is created in an Azure AD tenant it needs to sync over to the Azure AD B2C tenant. I need the user to exist in the B2C tenant before that user ever tries to login so I can't just point to the Azure AD tenant as the IDP. This is because not all of the users of the AD tenants will login but we will want to show the admin of that tenant all the users.
I've reached out to Microsoft's Azure architects but haven't gotten much feedback on the best approach. Looking for any examples or documentation on the best way to achieve this.
One way would be to develop a SCIM service that provides an endpoint for Azure AD to connect to.
The SCIM service would then call the Graph API to perform the user CRUD in B2C.
This is because B2C has no native SCIM support.
There is a Microsoft sample for the service that you could use. Described here.

Can Azure AD MFA work with on-prem Active Directory?

Can Azure AD MFA work with on-prem Active Directory? Our entire infrastructure is Microsoft on-prem solutions (AD, Exchange, SQL, SharePoint, Office, etc). We do have Microsoft 365 Basic which allows us to use the free version of Azure AD. We currently have our AD accounts synchronizing between on-prem and Azure AD. I've got MFA enabled for Azure AD, but it only works when signing into something Azure related. If I sign into an on-prem AD-joined device, it doesn't recognize I have MFA enabled in Azure AD for my user account.
we have two options available.
To trigger Azure MFA on RDP to On-premises VMs or to connect to On-premises VPN etc.The Network Policy Server (NPS) extension for Azure allows customers to safeguard Remote Authentication Dial-In User Service (RADIUS) client authentication using Azure's cloud-based Multi-Factor Authentication (MFA). this enables secure verification for users attempting to sign in to a Remote Desktop Gateway.
check This to Integrate your Remote Desktop Gateway infrastructure using the Network Policy Server (NPS) extension and Azure AD
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we have been using office 365 E3 for the past number of years. we would like to configure a windows 2019 essentials server locally for file storage and a few shared applications (ie quickbooks multi-user).
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thank you!!
If my understanding is correct, you really want is to be able to grant admin rights to your Azure AD users and allow them to login to the server with their regular Azure AD credentials.
If yes, then most optimum way of doing is to have on prem AD and have you user synced up from Azure AD to local AD. Azure AD Connect comes pretty handy in this scenario.
You can also take a look at Azure AD DS, Azure Active Directory Domain Services (Azure AD DS) provides managed domain services such as domain join, group policy, lightweight directory access protocol (LDAP), and Kerberos / NTLM authentication that is fully compatible with Windows Server Active Directory. You use these domain services without the need to deploy, manage, and patch domain controllers in the cloud. Azure AD DS integrates with your existing Azure AD tenant, which makes it possible for users to sign in using their existing credentials.
https://learn.microsoft.com/en-us/azure/active-directory-domain-services/overview
Check this link as well for additional reference:
https://serverfault.com/questions/808047/how-to-manage-on-premise-servers-using-azure-ad-credentials
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I can see plenty of information on extending the local domain into Azure, but my requirement is more of less the reverse of this.
Ideally I would like the local domain to trust Azure AD, but as an alternative
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I am not sure this is possible, but can Azure AD be trusted by a local
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As I know, there is no way to make Azure AD be trusted by a local on-premise domain.
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If you are trying to use Azure AD with Kerberos for Windows Integrated Authentication there was a comment about AADConnect, which has some offerings, especially if you use ADFS for Federated sign-ins. There is also the Azure App Proxy with KCD support

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