I'd like to connect to an On-Prem API from an external cloud service using the Azure AD Application Proxy. I can connect and use the API by logging in with my Azure AD User in a browser, but would like a code-based-like login to use from my external service.
I've been digging through various articles the last couple of days, and it seems not possible without an Azure AD User interactive login. I am able to create an AD user for this service only if needed, but handling the interactive login from code or even through Postman seems troublesome.
Can someone point me in the right direction to solve this cloud-service to on-prem app solution? (unfortunately, I can't move the on-prem app to Azure).
EDIT: I'll be looking at using the pass-through option in the App registration, which means i need to handle the authentication and security in my API.
Perhaps you could consider using an on-premises data gateway instead, but it depends on where your external cloud service is hosted.
https://learn.microsoft.com/en-us/azure/logic-apps/logic-apps-gateway-install
Essentially, if your external cloud service is completely outside your environment and your control, the data gateway can still be used, then you can expose a Logic App as a facade that can integrate with the on-premises data gateway. The external cloud service can then call the logic app to trigger the request, which can be secured by other means e.g. SAS key.
Related
I have a click once windows application which already has authentication n Authorization built in. Earlier i used to deploy it on physical server n share the location with users so that they can install it n use it. But now we have decided to deploy it on azure PAAS service (App service ). But currently url is geting access by anyone which i want to restrict. Currently my organization AD is not synced with Azure AD. So not able to use Azure AD for authentication.
Kindly provide some better solutions other than restricting users based on IP.
If it's a file download you can put it on Azure Blob storage for download and generate short-time SAS tokens.
While IP address restrictions and Azure AD authentication would be one-efficient approach for your scenario. Since you do not want to go that route (due to environment limitations), If you wish you could authenticate users with the specified provider (Microsoft Account, Facebook, Google, Twitter or Any OpenID Connect provider). App Service provides built-in authentication and authorization support, so you can sign in users and access data by writing minimal or no code.
App Service uses federated identity, in which a third-party identity provider manages the user identities and authentication flow for you. You can also use multiple sign-in providers.
So the simple process could be:
The option is Log in with . App Service redirects all anonymous requests to /.auth/login/<provider> for the provider you choose. If the anonymous request comes from a native mobile app, the returned response is an HTTP 401 Unauthorized.
Kindly checkout step-step instructions on the process/workflow:
Configure your App Service or Azure Functions app to use Microsoft Account login
If your WebApp is on VNet, you can have service endpoints enabled for Microsoft.Web, through access restrictions.
See- Advanced usage of authentication and authorization in Azure App Service
we want to use azure web apps not only for production but also for pre-production sites. These sites should be accessible only for Users in our Azure AD or even better only users with specific roles in the Azure AD. Or as a workaround some form of authentification without changing the code of the App. Since the App should be available public in some point of time.
At the moment these web servers are hosted in our internal network so they are only accessible through vpn or on site.
How can I secure a pre-production web app?
I tried the built in authentifcation with AD but I can't authorize a specific AD Role or AD Directory without changing the application it self.
What would be perfect for us would be a simple Basic Auth on the web app which I understand is also not possible without changing the App.
Anyone facing the same problem?
Maybe there is a design pattern for this? Or some Gateway to handle this?
Any hints would help,
Thanks
Stefan
Follow this article which shows how to configure Azure App Service to use Azure Active Directory (Azure AD) as an authentication provider.
Some best practices when setting up your app and authentication:
Give each App Service app its own permissions and consent.
Configure each App Service app with its own registration.
Avoid permission sharing between environments by using separate app
registrations for separate deployment slots. When testing new
code, this practice can help prevent issues from affecting the
production app.
https://learn.microsoft.com/en-us/azure/app-service/configure-authentication-provider-aad
I have a design issue that I've been struggling with in Azure. I have created a .NET Core API and deployed it as an App Service in Azure. On top of that, I have an instance of Azure API Management with oAuth 2 securing it. I was able to achieve this by following this tutorial:
https://learn.microsoft.com/en-us/azure/api-management/api-management-howto-protect-backend-with-aad
So, the API Management instance is secured with policies and rate limiting, but the back-end URL is wide open and requires no authentication. What is the best process to secure the back-end URL?
you can set APIM public IP in accessing whitelist of your App service to make sure only APIM requests will be able to access your App Service. For how to set IP restriction , you may refer to this doc : https://learn.microsoft.com/en-us/azure/app-service/app-service-ip-restrictions#adding-and-editing-ip-restriction-rules-in-the-portal
What is Azure AD connect and Azure ADFS? This is what I have understood: Azure ADFS is exposing on premises AD to Azure cloud and Azure AD connect is means to do that. Am I right?
We need to build an application which needs to authenticate users from different clients' AD. They may or may not have exposed their AD to Azure. Can someone please guide how can this problem be solved?
Azure ADFS is exposing on premises AD to Azure cloud and Azure AD connect is means to do that.
AS of now, the way Azure ADFS works, it essentially provides a way for a company to use AD and ADFS services, without having to deploy themselves. Just like how a Azure has Azure Web App will allow you to have a web server without having your own.
Unfortunately, It does not actually connect or integrate or expose your on premise AD. If you want your clients authenticate against multiple IDs, you do it the old fashioned way, by connecting to the on-premises AD directly. You cannot actually route it through Azure.
One thing which you can do (this will be a huge endeavour) is to move the on premises AD to Azure cloud, which can be done using Azure VMs. Now, that would allow your client to get rid of their on premises AD and use the Azure cloud for everything.
I have multiple Web APIs deployed in Azure without applying authentication, so anyone has access to internet has the access to the Web APIs.
Now I would like to apply authentications to the Web APIs, instead of implementing the same authentication logic in different Web APIs, I found Azure API gateway (API management) is a potential solution.
With Azure API management documentation, I learned I can apply policies like validate-jwt to authenticate requests to back end Web APIs. However, endpoints of the back end Web APIs are still available to users.
So, how should I hide them? Must I define a sub network or does Azure API management have a feature for this?
Recently I also had this same problem. Finally I found the solution by using 'IP Restrictions' function. See the following steps:
1) Go to your API management Overview page in Azure portal, copy the VIP.
2) In your Web APP > Networking
3) Paste in your VIP
Microsoft's Solution: How to secure back-end services using client certificate authentication in Azure API Management
Using this approach, any attempt to access a back-end service without the required certificate will result in a 403 - Forbidden response.
You can use a self-signed certificate as opposed to using a trusted CA signed certificate ($$). I chose to implement an Azure Key Vault where I generated a new certificate, downloaded it as a *.PFX file, and uploaded it into my API Management instance as described in the article.
Here is an answer from #PramodValavala-MSFT
https://github.com/MicrosoftDocs/azure-docs/issues/26312#issuecomment-470105156
Here are options:
IP restrictions (as described by #redman)
Function keys
Authentication/Authorization for Functions
Managed Identity for APIM
p.s. in my case I want with IP restrictions since it allows to keep all of the auth on the API Management Gateway.
Or you could use:
Basic auth
Mutual certificate auth
VPN
to secure Azure API Management service communication with your backend service.
Look into setting up TLS on Azure API Management so that all connections to your backend API must come through the API proxy.
Azure API management cannot modify your backend service. It's role is limited to being a proxy.
You will have to apply authentications to each Web API or configure your firewall to accept requests only from Azure APIM.
Is your backend app an Azure Function app or an App Service app?
If so, Managed Identity may be the simplest way to restrict access. No need to store client secrets/certificates in the API Management + not as flaky as IP whitelisting method.
Create an Azure Active Directory Application for the Function App.
Enable Authentication/Authorization module on the Function App and reference the AAD app from step 1.
Enable a Managed Identity on the APIM instance.
Add a <authentication-managed-identity> policy to the APIM and reference the AAD app from step 1.
I've blogged about this approach in more detail in Restrict Azure Functions to API Management with Terraform
Reference:
Use managed identities in Azure API Management
Configure your App Service or Azure Functions app to use Azure AD login