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Can anyone suggest some solution for this scenario?:

I have two resources deployed in a VNet: Application Gateway and a VM behind application gateway. (Application gateways in subnet1 and VM in subnet2) There's is no public ip associated with Application Gateway (internal app gateway with only private ip). I have automation scripts in storage account in another tenant and I need to be able to download those inside vm using azure cli. With the given architecture, I want to be able to download the scripts in the vm from storage account. Currently, if I run "az login" from VM, nothing happens. I found some help on Azure documentation :https://learn.microsoft.com/en-us/azure/application-gateway/configuration-overview#allow-application-gateway-access-to-a-few-source-ips but it's not helpful.

I have also attached network security group with allows VnetInbound for VM. In while architecture, I cannot use any public ip because of customer requirements and they do not want any connectivity to internet.

Any suggestions?

Thanks in advance!

azure_geek
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1 Answers1

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Since Azure VM does not attach a public IP, the storage account does not directly communicate with your Azure VM over the Internet.

In this scenario, I would like to provide two suggestions:

The one is to use virtual network service endpoints, which allow you to secure Azure Storage accounts to your virtual networks, fully removing public internet access to these resources. You could create service endpoints for Microsoft.Storage in that VM subnet. You VM instance will access the storage account over the Azure backbone network but it has some limitations as below:

The virtual network where the endpoint is configured can be in the same or different subscription than the Azure service resource. For more information on permissions required for setting up endpoints and securing Azure services, see Provisioning.

Virtual networks and Azure service resources can be in the same or different subscriptions. If the virtual network and Azure service resources are in different subscriptions, the resources must be under the same Active Directory (AD) tenant.

Another suggestion is to use private endpoints for Azure Storage. You could create Private endpoint connections for the storage account in a VNet, then peer this VNet with the VNet where your Azure VM create.

For more references, you could get more details and steps on these blogs--https://stefanstranger.github.io/2019/11/03/UsingAzurePrivateLinkForStorageAccounts/

and

https://kvaes.wordpress.com/2019/03/10/hardening-your-azure-storage-account-by-using-service-endpoints/

Nancy
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    The first approach worked for me. Thanks. I could connect to the storage account in other tenant as well as I have connected it using service principal which has access to both tenants. Appreciate your help. – azure_geek Apr 10 '20 at 20:58