Azure SignalR Service Should Use Private Link

Description:

Azure Private Link lets you connect your virtual network to Azure services without a public IP address at the source or destination. The private link platform handles the connectivity between the consumer and services over the Azure backbone network. By mapping private endpoints to your Event Grid domains instead of the entire service, you'll also be protected against data leakage risks.

Solution/Reference: 

To enable private link connections for your Azure SignalR service resource:
1. . Find your SignalR resource in the portal,
2. Navigate to Settings --> Private endpoint connections, 3 Click "+ Private endpoint" to configure the values.

https://aka.ms/asrs/privatelink.