The Basics of Azure VNet Peering
See how you can connect two separate virtual networks using VNet Peering
Integrating Azure Virtual Network (VNet) peering with private endpoints is a robust strategy for securely connecting services across different VNets. This approach ensures that sensitive data remains within the Azure backbone network, minimizing exposure to the public internet.
Use Case: Secure Communication Between Azure App Service and Azure Storage Account Across VNets
Scenario:
Consider a scenario where an organization has two separate VNets:
VNet A: Hosts an Azure App Service that processes and stores application data.
VNet B: Contains an Azure Storage Account configured with a private endpoint to restrict public access.
The objective is to enable the App Service in VNet A to securely access the Storage Account in VNet B using private IP addresses, thereby avoiding exposure to the public internet.
Solution:
To achieve secure communication between the App Service and the Storage Account across different VNets, the following steps are implemented:
Create a Private Endpoint for the Storage Account:
In VNet B, establish a private endpoint for the Azure Storage Account. This assigns a private IP address from VNet B's address space to the Storage Account, allowing resources within the VNet to access it securely over the Azure backbone network.
Configure VNet Peering Between VNet A and VNet B:
Set up VNet peering between VNet A and VNet B to enable direct, low-latency communication between resources in the two VNets. VNet peering allows VNets to communicate as if they are part of the same network, using private IP addresses.
Integrate the App Service with VNet A:
Use VNet Integration to connect the Azure App Service to VNet A. This integration enables the App Service to access resources within the VNet, including those in peered VNets, using private IP addresses.
Configure DNS for Private Endpoint Resolution:
Ensure that the App Service can resolve the private endpoint of the Storage Account. This typically involves configuring a Private DNS Zone linked to both VNets, allowing for proper DNS resolution of the Storage Account's private endpoint.
Outcome:
By implementing VNet peering and private endpoints, the Azure App Service in VNet A can securely access the Azure Storage Account in VNet B over private IP addresses. This setup enhances security by keeping data transfer within the Azure backbone network and eliminating exposure to the public internet.
This use case demonstrates the effective combination of VNet peering and private endpoints to securely connect services across different VNets in Azure, leveraging private IP connectivity and maintaining data security.
To see a demo of this approach, click on the YouTube video below where I showcase this.