We are working on WEB APIs and want to integrate Azure AD for AuthN and AuthZ. We have successfully integrated the same. We have created enterprise applications, custom roles, assigned users for the same.
Now we need to allow access to APIs with AWS like keys (Secret / Access keys). Individual user can generate their own keys and store those in Azure AD so that when those keys are used, user can be authenticated.
I didn't find any way to achieve this using Azure AD. Any suggestions around same are welcome.
Meanwhile I have gone through custom store for keys. Please refer link : https://www.codeproject.com/Articles/1228892/Securing-ASP-NET-CORE-Web-API-using-Custom-API-Key
Thanks in advance.
Azure AD authentication uses tokens.
So any app wishing to call your API must authenticate with AAD and acquire a token for the API.
If these users are making apps within your organisation, then they can register their app in your AAD and require access to your API. They will create and manage their own keys.
If on the other hand these users are making an app for another organisation, you'll have to make your API a multi-tenant app.
And you'll need to have an on-boarding page in your API through which you will redirect their admin/user to the AAD login page, where they will consent to any permissions your API requires.
After this a service principal is created in their tenant.
Then they can register their client apps and require access to your API.
They will have full control which permissions they want to assign to each app, what roles to give to users etc. But of course the tokens will contain their tenant id so you can filter access on that.
Related
Apologies if my terminology is a little off here. I'm developing a web app with a React front-end, Express server and Postgres DB. Everything is on Azure, as per company preference, with everything I just mentioned within our organisation's AAD tenant. I've created an AAD B2C tenant for authenticating users, and want to perform operations, via the Microsoft Graph API, on that B2C tenant from the Express server that's hosted on an Azure App Service.
Setting up certificate authentication for Graph, I realised that I'd need to manually upload the private key to the server or keep them in Azure Key Vault. Opting for the latter (our zip-deploy/run-as-package setup means each deployment would mean re-uploading the key), I noticed that the #azure/identity package uses the servers' managed identity to authenticate with AAD and get a token for Key Vault, for which the server has access rights.
It seems a bit... 'roundabout' that the express Web App seamlessly authenticates, gets a token, for me to then redeem that token to retrieve the private key, which I then use to authenticate as the B2C-registered application and access the Graph API.
I can't tell if I'm being really daft -- despite them being in different tenants, is there a way that the server can more-directly authenticate with the B2C tenant? Is there a facility for cross-tenant permissions?
Many thanks for any advice offered.
If I understand correctly you want to authenticate cross tenant if yes then you could think of AAD app registration and there you can configure other tenant.
We have a client that owns two separate Azure Cloud tenants: ACloud and BCloud.
ACloud contains their regular SaaS and Azure AD users log in with userName#clientACloud.onmicrosoft.com
BCloud contains only IT/sysadmin users managing cloud PaaS resources and users log in with userName#clientBCloud.onmicrosoft.com
We have deployed an API to BCloud which requires Azure AD authentication. The API is being called from a mobile app written in React. There, users are presented with a login screen and must login using username#clientBCloud.onmicrosoft.com
However, we want users to be able to log in using their normal userName#clientACloud.onmicrosoft.com
Is there a way to configure the API in BCloud to use ACloud’s Azure AD for authentication to an API hosted in BCloud?
One resource from Microsoft recommended using the graph API. I think the graph API would allow the mobile app to authenticate the user’s ACloud account, but that SAML token won’t work against BCloud’s API. We are looking for some way that the API in BCloud can accept user tokens from ACloud, so I suspect there is some configuration we need to make in BCloud to trust ACloud’s Azure AD.
Thanks in advance!
I want to develop a RESTful API to manage users in a custom Azure AD tenant. User management includes the following (the AAD tenant will contain predefined groups):
Create Users
Delete Users
Assign User to Group(s)
Remove User from Group(s)
Reset User Password
I am confused about how to set up the application registration and hoping to get direction based on the following:
The REST API application must be secured by Azure AD, so only designated admin users can access and use the API. Does that require the REST API application to be registered in the AAD Tenant where permissions to use the API and let the API access user profile (and group membership) is set?
The REST API is essentially a client of the Microsoft Graph API, which I envision facilitates the above operations requested by an admin user. Does that require a separate application registration, or can the same registration be used to provide necessary permissions?
Do I need the ADAL library in this situation?
Does that require the REST API application to be registered in the AAD
Tenant where permissions to use the API and let the API access user
profile (and group membership) is set?
Of course,you the Rest API app should be registered in the AAD.
Does that require a separate application registration, or can the same
registration be used to provide necessary permissions?
You can just need to register one app and you can assign mulitple permissions to it. Also you can add different roles to the app for different access scope to your API.Although, Your REST API is just like a client for the Microsoft Graph API, You can just assign the permssions to it by Applicaiton registration.So,you can just the Microsoft Graph by sepcify the resource in the HTTP request.
Do I need the ADAL library in this situation?
Yes, you need. For your web API, if you use AAD v1 ednpoint, you can just use ADAL to validate the JWT token and do some neccessary operations.
my question is similar to question Multi-Tenant app - OneDrive Business API
but i want my application to access the one drive from tenants of other different azure subscription, is it possible? i understood that if i register my application and mark it as multi-tenant, it will allow me access the tenant in my azure subscription, but if i want to access the tenant using the same application but in different azure subscription whats the way.
What’s kind of authentication flow are you using? Normally, we use the Authorization Code Grant Flow that the user delegates access to a web application. In this scenario, to enables the users on other tenants to login the website and access their Office 365 resource, we only need to enable the multiple-tenant app on the Azure portal.
but if i want to access the tenant using the same application but in different azure subscription whats the way.
It depends on which REST you were using. It is same as we are call the REST API for the single tenant app if we are using the Microsoft Graph to query the OneDrive for business. The endpoint of the list children of a driveItem is still like below no matter which tenant the user login:
GET https://graph.microsoft.com/v1.0/me/drive/root/children
GET https://graph.microsoft.com/v1.0/me/drive/items/{item-id}/children
GET https://graph.microsoft.com/v1.0/me/drive/root:/{item-path}:/children
If you were using the Office 365 REST API, we need to discover the service endpoint. You can refer to here for more detail about Office 365 Discovery Service REST API.
Depending on the permissions that you need normally the tenant admin of the other tenant has to add the application to their own Azure AD. With the newer app model v2 this is quite a lot easier as the admin can simply give consent once in the normal consent screen for the entire tenant. See here for a mor elaborate explanation of how this would work.
Is it possible to gain access to the Azure Management APIs through the client ID and secret for a web app?
I have a web app through which i want to be able to manage Azure. I want to do this using the credentials of the application itself so that the current user does not have to be an azure administrator.
I have given the web app the necessary role on my subscriptions and obtained the access token through the client credentials grant flow in AD but i still get an unauthorized.
This is probably because the azure management API has no permission set other than delegated - the access works fine if i use the authorization code grant flow for the logged in user, but thats not what i want.
So to reiterate, if, given a web app that has RBAC to a subscription and is able to obtain an access token from AD, is there any way, without an interactive user, that the web app is able to use the management API??
Yes, you can obtain a token from AAD for a service principal and use that to manage resources as long as that service principal has all the access you need.
Make sure the token you get has a resource/audience of "https://management.azure.com" and is for the tenantId that the subscription is associated with.
You can also see this article from Brady Gaster that explains how to use Azure AD applications to manage Azure Services from an external app : http://www.bradygaster.com/post/using-windows-azure-active-directory-to-authenticate-the-management-libraries
EDIT : Azure AD supports Service to Service calls using OAuth 2.0 client credentials: https://msdn.microsoft.com/en-us/library/azure/dn645543.aspx
Hope this helps,
Julien