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Virtual network integration connects the app service to the virtual network, ensuring that outbound traffic from the bot app service passes through the firewall. This way, the app service can be accessed only through the firewall.Īzure Private Link service for inbound access to the bot app service over an Azure private endpoint. The app service has a registered custom domain that points to the IP address of the firewall.The Virtual Network Integration Subnet and the Private Endpoint Subnet are associated with the route table, ensuring that any traffic passing through them is routed through the firewall.īot Service consists of the bot app service plan, app service, and bot channels registration.

The default route with the 0.0.0.0/0 address prefix instructs Azure to route traffic that isn't within the address prefix of any other route to the subnet where the Azure Firewall instance is deployed. It ensures that traffic coming to and from the bot passes through the firewall. Route table defines the routes that traffic takes within the virtual network.

The Azure Firewall instance is placed in its own subnet. Ordinarily, a firewall is placed in its own virtual network, which is a common pattern for hub and spoke architectures, but this simplified example deploys all services and resources into a single virtual network. Private Endpoint Subnet (10.0.3.0/24), which is used to route traffic from the firewall to the bot's private endpoint.Īzure Firewall exposes a single public IP address that clients can use to communicate with the underlying bot services. Virtual Network Integration Subnet (10.0.2.0/24), which is used to route traffic from the bot's private endpoint to the firewall. The virtual network in this example uses the address space of 10.0.0.0/16, and contains three subnets for use by the scenario's required components: DataflowĪzure Virtual Network enables communications between Azure resources.

Architectureĭownload a Visio file of this architecture. At the same time, it enables channels in the Teams client to communicate with the bot through an IP that's exposed through an Azure Firewall instance. This example scenario helps secure the connection to a Microsoft Teams channel bot's web app by using Azure Private Link and Azure Private Endpoint.