Policy: Azure > CIS v3.0 > 04 - Storage Accounts > 04.08 - Ensure 'Allow Azure services on the trusted services list to access this storage account' is Enabled for Storage Account Access

Configures auditing against a CIS Benchmark item.

Level: 2

NOTE: This recommendation assumes that the Public network access parameter is set to Enabled from selected virtual networks and IP addresses. Please ensure the prerequisite recommendation has been implemented before proceeding:

• Ensure Default Network Access Rule for Storage Accounts is Set to Deny

Some Azure services that interact with storage accounts operate from networks that can't be granted access through network rules. To help this type of service work as intended, allow the set of trusted Azure services to bypass the network rules. These services will then use strong authentication to access the storage account. If the Allow trusted Azure services exception is enabled, the following services are granted access to the storage account: Azure Backup, Azure Site Recovery, Azure DevTest Labs, Azure Event Grid, Azure Event Hubs, Azure Networking, Azure Monitor, and Azure SQL Data Warehouse (when registered in the subscription).

Turning on firewall rules for a storage account will block access to incoming requests for data, including from other Azure services. We can re-enable this functionality by allowing access to trusted Azure services through networking exceptions.