Azure requires multiple IDs to create application ServicePrincipal credentials.
What's the difference between the client id and tenant id?
Why does Azure require separate IDs?
An application ID is the ID of the specific application you have created in Azure Active Directory, you will likely have many applications for different purposes. Each application can have different users assigned access, different criteria for access (MFA, conditional access etc.) and will be configured to authenticate users for different real applications or purposes. Each Azure AD application has a unique ID, and this ID is what you give your application to use to talk to it when processing logins etc.
All of your applications sit within an Azure Active Directory instance, or as MS like to call it, a tenant. The tenant ID identifies which Azure AD instance the application sits under, so Azure knows where to look when you request things using that applicaiton ID.
I suppose in theory if Applicaiton IDs were unique globally then you could work out the tenant from the App ID, but that isn't how MS set it up.
Related
We are designing a web application and want to use Azure AD External Identities.
We define Multiple clients in our web application, and each client can have multiple users. A client invites users and gives them access to data by their email addresses, which could be personal or organizational.
Users log in to the application. After the login, if they have access to multiple clients (because different clients can invite them), they should be able to switch between clients and get an access token for the selected client.
It is essential to mention that each user has different permission on different clients; for example, a user can have admin permissions in one client and simple user permissions in another.
Is it possible to have these features in Azure AD?
How should We use Group, Scope, and Role to implement it?
Whenever external identity providers (azure ad in this case) are used in 3rd party application:
It's scope which defines permissions. It can be specified at client(application) level. Hence Whatever scope you define for a particular client it would apply to all users. Obviously You can create multiple applications which contains different scope.
roles,groups has nothing to do with generating access tokens since those are used only when you login into azure portal.
Here You will have to use client credentials flow of OAuth 2.0. Otherwise user will need to login each time if auth code flow is used.
Hello friends and thank you for taking the time to read my question and for all potential answers.
I am building a customer application which allows several proprietors (business owners) to log-in and manage their business. I don't want to focus on the details of the app as it is not relevant (I think) because this is more of a qualitative question.
I am using Azure AD (App Registrations) for both the Blazor WASM and API. I am comfortable creating and utilizing those. What I am trying to understand is how to not allow customers to see each other's data by using purely just Azure AD.
Example:
Customer User A from business X logs into the app. They are redirected to myapp.com/Business-X
The Roles I have right now in Azure AD are User.Read, User.ReadWrite and User.Admin
Customer User B from business Y logs into the app and is redirected to myapp.com/Business-Y
Nothing is preventing User A from changing their URL to myapp.com/Business-Y and have the same role in another business' app. I understand that I can change my Roles in Azure AD to be User.Read.X, User.ReadWrite.X, User.Admin.X, User.Read.Y, User.ReadWrite.Y, User.Admin.Y etc. but imagine if I have hundreds of customer's let's say, that is unmanageable and my blazor code will just be a mess.
Is there a better/smarter way to do this? For example I can keep the current simplified roles and add users to a database where I map them to the business they have access to but is that secure? I suspect using a database to store this does not sound right because it feels that Azure AD can do this and I just don't know how.
Thank you again!
• Yes, you can surely do restrict the users access to a particular application registered in Azure AD by ensuring these applications are also registered as ‘Enterprise Applications’ in Azure AD. Once, these applications are shown up in ‘Enterprise Applications’ in Azure AD, then you can configure them to require assignment for a particular set of users only by ensuring that the required users only have access to that application. To enable user assignment and assign users for that application in Azure AD, you should have ‘Global Administrator, Application Administrator or Cloud Administrator’ directory roles assigned to your ID.
Please find the snapshots below for more information in this regard: -
Also, once you have configured the above, you should ensure to create a custom role at the directory-level and assign it the required permissions as then this role would be assigned to all the users and these users then individually can be assigned to the required application, thus ensuring that only specific users are allowed to access the assigned app.
Please note that tenant wide admin consent is granted to apps that would require assignment. Kindly refer to the below link for more information: -
https://learn.microsoft.com/en-us/azure/active-directory/develop/howto-restrict-your-app-to-a-set-of-users#update-the-app-to-require-user-assignment
I am working on an application, and its registration in Azure AD must allow Accounts in any organizational directory to sign-in. We built this with the thought that we could manage the roles for the app within Azure, so we made a few roles. The roles would also be only assignable and used by employees within our organization.
The whole time we thought that these roles can only be assigned within the Azure AD of the organization that owns the app's registration. We now found that when a user from another tenant signs into our app, they can find the app in their Azure's Enterprise Applications and just assign themselves roles. This means that they'd be able to view data that was never meant to be accessible to them. We don't want any other organization to have access to assigning these roles.
So is there any way to disable other tenants' ability to assign themselves a role in their Azure's Enterprise Application? I just want them to be able to log into the app, not give themselves any roles.
Is this even the appropriate way to achieve what we want? If not, what would be the proper way to do this?
At least I am not aware of any mechanism that will prevent admins from other tenants to assign roles to user (it works by design).
If you want to use the application roles only within your tenant, I would suggest that you use the tenantid that is also part of the claims when you doing authorization within your application...
I am developing multitenant web application which is being hosted on azure app service.
It has 2 parts one is backend services which has pure APIs developed using .NET CORE and second is front end which consumes these APIs and is developed using Angular.
We are using Single instance , database per tenant concept where each user will have its own Database.
So there will be a catalog Db , which will hold information about each customer's tenant Id, tenant's Database connection string , customer Id etc.
We do not want to use Azure AD as of now, as our APIs are connecting to different ERPs to validate the user and data.
To achieve multitenancy, we are thinking of 2 ways
Unique Secret Id called TenantKey (for which we will be using some hashing function on TenanatId)
So every time they login, they need to enter this TenantKey along with UserId and password , so we authenticate this user based on that TenantKey and fetch DB connection string based on this.
We validate user by connecting to their own DB using Connection string fetched from CatalogDb.
Once we validate, we generate JWT token and this Connection string of Tenant's own Db is stored as Claim and will be used every time when user calls any API using this token.
This is working fine but
user has to remember and enter this TenanatKey along with UserId and password when they login everytime... which may not be user friendly...
As it is multitenant app, If another tenant gets to know the TenantKey they can access the info provided that they know the credentials(rare but possible)
Custom Domains
As Azure provides way to add custom domains to Azure App service through which we can identify the Tenant and Instead of TenatKey, we will be using this custom domain to find the Connection string in Catalog Db, create JWT token and store as Claim and use it
So question is , is there any way to secure these custom domains so only particular customer can access it? Like in their VPN?
I heard there is limit of 500 domains that can be added to an App service? will there be any way to extend if needed?
We will have load balancer going forward, will this customer domain have any effect on that?
Restrict your multi-tenant app to specific tenant
There are two steps to get started with tenant restrictions.
First, make sure that your clients can connect to the right
addresses.
Second, configure your proxy infrastructure.
To use tenant restrictions, your clients must be able to connect to the following Azure AD URLs to authenticate: login.microsoftonline.com, login.microsoft.com, and login.windows.net. Additionally, to access Office 365, your clients must also be able to connect to the fully qualified domain names (FQDNs), URLs, and IP addresses defined in Office 365 URLs and IP address ranges
For information on how to configure the proxy and the above process, refer here.
Output will be like this after configuring:
Restrict your multi-tenant app to specific users
If an app is secured with Azure AD, it's available to all users who authenticate successfully. But we will have the requirements to restrict access to specific users. This can traditionally be done within the application based on the roles.
Tenant admins and developers can restrict an app to a specific set of users or security groups in the tenant by also using this built-in Azure AD functionality.
Step 1
Log in to the Azure portal as a Global Administrator. In the top Azure bar search for the “Azure Active Directory”.
Step 2
From the properties left pane look for the “Enterprise applications” like below,
Step 3
Look for the AD application which you want, if you don’t find your application then select “All Applications” from the Application Type dropdown and use other filters also to find the application.
Step 4
Once you select the application, select “Properties” in the left menu and enable the “User assignment required” option to “Yes” and “Save” to update this configuration change.
Step 5
Make user assignments: Select “Users and groups” > Click “Add user”.
Step 6
It will direct you to the next page, where you may choose which users have access to the app services made available through this particular Azure AD app authentication.
Now, the user will be successfully authenticated when they attempt to log in to your Azure App Service with any legitimate AD user, but they will only be able to approve the application based on the configurations we just made.
For more information, refer here in Microsoft documentations.
I heard there is limit of 500 domains that can be added to an App service? will there be any way to extend if needed?
Yes, What you heard is correct!
You could try to contact Azure support to increase the limit:
Navigate to your subscription in the Azure Portal
Click on Usage + Quota
Click on Request increase
Select Other Request in the Quota Type field
Fill all other fields of the request
I have a client application which runs as daemon mode [no interfaces].
This daemon will speak to app created in Azure (single-tenant currently) to fetch users using O365 Graph API.
Authentication mechanism used is Auth2 certificate/thumbprint.
Permission to app is given directly by admin while creating app in azure itself.
Now i need to make this daemon (client) and app in azure as multi tenant.
Things i followed after reading some articles
Mark app as multi-tenant in azure
Point to /common in token url in client (which runs as daemon) https://login.microsoftonline.com/common/oauth2/token.
Questions:
After this i was able to get access token , but for any query i make i am getting error "The identity of the calling application could not be established".
Since there is no user intervention here , how do i give permission for tenant B app to access tenant A's data like users in my case ? Anything i can do in manifest file
If tenant B's app is accessing tenant's A data , should both app in azure be mutlitenant ?
Lot of articles explains how is the flow based on user login (user consent). But my client application runs as daemon. How do i give permission directly/mechanism in azure app for accessing other tenant's data ?
[Assume i am admin of both tenants and i have complete access to both tenant]
It isn't possible to use the common endpoint when using the client_credentials flow to log into the \OAuth2\token endpoint. This is because common is designed to identify the user's "home" directory and when they log in interactively they are redirected to sign into their home directory unless overwritten.
2 & 3. Tenant B doesn't get a registered application it only get an Enterprise Application. The linked Registered App would be the one is Tenant A, communication here isn't bi-directional. A has an Enterprise Application in A and an Enterprise Application in B. You set the permissions for all the Enterprise Applications using the Registered Application in A but an Admin/User -dependant on the permission type- will have to grant permissions in their respective tenant (A & B). When you log in as a user you utilise the Application Registration. In order to access B you will have to call the token endpoint containing B's tenant id.
To enable one application to be able to access multiple tenants you need to:
make the Application Multi-Tenanted. Make a note of the application's ApplicationId.
Using PowerShell log into the tenant you want to give the Application access to.
Use the Cmdlet New-AzureRmServicePrincipal -ApplicationId <ApplicationId> where is the one you noted earlier.
This will create a service principal in tenant B based on the application in Tenant A. The application in A when then be able to use the token endpoint for Tenant B to log in an access.