Connect Azure Front Door Premium to a storage account origin with Private Link

Article
03/31/2024

This article guides you through how to configure Azure Front Door Premium tier to connect to your storage account origin privately using the Azure Private Link service.

Prerequisites

An Azure account with an active subscription. You can create an account for free.
Create a Private Link service for your origin web server.

Enable Private Link to a storage account

In this section, you map the Private Link service to a private endpoint created in Azure Front Door's private network.

Within your Azure Front Door Premium profile, under Settings, select Origin groups.
Select the origin group that contains the storage account origin you want to enable Private Link for.
Select + Add an origin to add a new storage account origin or select a previously created storage account origin from the list.

The following table has information of what values to select in the respective fields while enabling private link with Azure Front Door. Select or enter the following settings to configure the storage blob you want Azure Front Door Premium to connect with privately.

Setting	Value
Name	Enter a name to identify this storage blog origin.
Origin Type	Storage (Azure Blobs)
Host name	Select the host from the dropdown that you want as an origin.
Origin host header	You can customize the host header of the origin or leave it as default.
HTTP port	80 (default)
HTTPS port	443 (default)
Priority	Different origin can have different priorities to provide primary, secondary, and backup origins.
Weight	1000 (default). Assign weights to your different origin when you want to distribute traffic.
Region	Select the region that is the same or closest to your origin.
Target sub resource	The type of subresource for the resource selected previously that your private endpoint can access. You can select blob or web.
Request message	Custom message to see while approving the Private Endpoint.

Then select Add to save your configuration. Then select Update to save the origin group settings.

Note

Ensure the origin path in your routing rule is configured correctly with the storage container file path so file requests can be acquired.

Approve private endpoint connection from the storage account

Go to the storage account you configure Private Link for in the last section. Select Networking under Settings.
In Networking, select Private endpoint connections.
Select the pending private endpoint request from Azure Front Door Premium then select Approve.
Once approved, it should look like the following screenshot. It takes a few minutes for the connection to fully establish. You can now access your storage account from Azure Front Door Premium.