Currently I have two Azure VM's, one for the ASP.NET application (VM1) and another with SQL Server 2017 (VM2).
At the moment, the application on VM1 connects to VM2's SQL Server using SQL Server authentication, but now I want to change it to Windows authentication. I found this on the Azure website about how to connect:
Virtual networks also enables you to join your Azure VMs to a domain. This is the only way to use Windows authentication to SQL Server. The other connection scenarios require SQL Server authentication with user names and passwords.
https://learn.microsoft.com/en-us/azure/virtual-machines/windows/sqlclassic/virtual-machines-windows-classic-sql-connect
But there is also a website forum ask to use Azure Active Directory domain in order to achieve this.
I am confused regarding this, can anyone help me with a description how to connect my VM1 application to VM2 SQL Server using Windows authentication?
Related
I've got an Azure App Service that needs access to a classic SQL Server (non-Azure SQL, not SQL Managed Instance) and I'd prefer to do this via System Managed Identity. This is enabled on the App Service and a corresponding Enterprise Application is created on Azure AD.
The SQL Server is also connected to this Azure AD and User accounts on the AD already have access to the database. However I can't find how to create a login for the Enterprise Application. If this was an Azure SQL database I could do it with CREATE LOGIN [AZUREAD\app] FROM EXTERNAL PROVIDER but this does not work on a classic SQL Server, only on Azure SQL/MI.
A solution would be to use SQL accounts and reference the login/password in the connection strings, but as mentioned I'd much rather use Azure AD for authentication.
To answer my own question: SQL Server 2022 includes Azure AD authentication Link
Using integrated security or an access token it will be possible to authenticate with an App Registration.
This is currently in preview with no RTM date specified.
I am required to migrate an on-prem ASP.Net web application with its SQL Server 2019 backend to Azure.
The Web application initial migration must be IaaS (Windows VMs running IIS).
The SQL 2019 has to be Azure SQL PaaS (Not Azure SQL Managed instance).
The existing on-prem Web application has several virtual directories, and each application in a virtual directory, is in a separate IIS app pool.
Each app pool is run under the context of a different domain service account.
Connection to the SQL databases is via integrated security.
In the current on-prem solution, the domain service accounts are added as logins to the SQL Server and each has permissions to one or more of the databases (Execute / Connect permissions; addition to datareader role etc).
I believe there will have a domain join to Azure AD, so the on-prem AD service accounts will be accessible in azure (as far as I can understand).
SQL Azure does not support CREATE LOGIN [MYDOMAIN\MYSVCACCOUNT] FROM WINDOWS;
Is there a way I can setup the existing on-prem domain accounts with the access, permissions and roles in the SQL PaaS solution, to mirror the current on-prem setup?
Alternatively, could someone could help me identify resources for best practice for the architecture described.
Thank you
I found a a few good posts that assisted me to understand all available options:
https://www.mssqltips.com/sqlservertip/5242/adding-users-to-azure-sql-databases/
https://learn.microsoft.com/en-gb/azure/azure-sql/database/logins-create-manage
I have an application written in VB, which used to connect with a Microsoft SQL Server, which is placed on a VM in the domain, using Windows Authentication(Local Domain).
But, I have moved my DB to a SQL Server which is placed on an Azure VM.
My problem is that i don't know how i can use Windows Authentication(or somehow to "ask" the Active Directory about the user who tries to connect).
I have seen the modes of SQL Server:
Active Directory - Password
Active Directory - Integrated
but i can't understand how i can use them. Should i have to do trust relation between 2 domain(Local, Azure)?
Can someone help?
I have moved my DB to a SQL Server which is placed on an Azure VM.
SQL on an Azure VM is the same product you might run on-premises, and supports SQL Auth and Windows Integrated Auth. The Azure Active Directory authentication methods supported by Azure SQL Database and Azure SQL Data Warehouse are not applicable to SQL Server running in an Azure VM. See:
Azure Active Directory authentication is a mechanism of connecting to
Azure SQL Database and SQL Data Warehouse by using identities in Azure
Active Directory (Azure AD).
See Use Azure Active Directory Authentication for authentication with SQL Database, Managed Instance, or SQL Data Warehouse
For SQL Server running in an Azure VM you use either SQL Authentication or Windows Authenticationl, as outlined here Authentication in SQL Server
You can use Windows Auth in your VM with either local accounts (created on the VM), or you can deploy a Domain Controller on a separate VM into your VMs VNET and use identities from the Domain. The Domain Controller you deploy into your Azure VNET can be an isolated Domain, or it can be a replica for your on-premises domain. If you want to deploy a replica of your on-premises domain into an Azure VNET you also will need to use a site-to-site VPN or ExpressRoute, as explained here Guidelines for Deploying Windows Server Active Directory on Azure Virtual Machines
I am trying to connect to an on-premises SQL Server from my API which i have deployed to Azure App Service. I have established a Azure Hybrid Connection to connect between on-premises SQL and Azure. I created a connection string which included username and password as that of a local login i created in the On-Premises server. This is allowing me to connect.
Connection String:
Data Source=;Initial Catalog=;User=;Password=;MultipleActiveResultSets=True
However i want to connect to the server using windows authentication. My System account has access on the server, but when using connection string as -
Data Source=;Initial Catalog=;Integrated Security=SSPI;User=;Password=;
Or
Data Source=;Initial Catalog=;Integrated Security=SSPI;
It is giving error as
"Login failed. The login is from an untrusted domain and cannot be
used with Windows authentication."
Please suggest how to use windows mode of authentication while forming connection string to the on-premises SQL Server from Azure App Service.
Azure Hybrid Connection does not appear to support Active Directory and hence Windows Authentication will not work. See note about sql auth being required in Official MS documentation.
https://learn.microsoft.com/en-us/azure/biztalk-services/integration-hybrid-connection-overview
Also, look at the following SO question where one of the answers details common issues faced this setup:
C# web app not connecting to on premise SQL Server through Azure hybrid Connection
You are unlikely to get around this, especially if you are hosting your app as a web app.
I need to connect my web app on Azure to our on site SQL Server instance via Windows authentication (not via SQL Server account authentication). Active Directory is already integrated with the on-site AD and therefore all of the users are available there.
My question is, is it possible to hook up an azure web app to an on-site SQL Server via Windows authentication.
is it possible to hook up an azure web app to an on-site SQL Server via Windows authentication.
Base on my option, it maybe that we couldn’t do that. As we have been limited to do that operation for azure WebApp. There is also another SO thread mentioned that.
If we want to connect to on premise SQL Server, we can use hybrid connections to access on-premises SQL server database in Azure WebApp, more info please refer to the document.
If we want to authenticate the WebApp with local Active Directory, and we have an on-premises secure token service (STS) like Active Directory Federation Services (AD FS), we could use that to federate authentication for our Azure WebApp. More info please refer to the document.
Hybrid connections at this time does not support AD accounts due to
because you cannot domain join an App Service worker