Azure security baseline for Virtual WAN

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This security baseline applies guidance from the Microsoft cloud security benchmark version 1.0 to Virtual WAN. The Microsoft cloud security benchmark provides recommendations on how you can secure your cloud solutions on Azure. The content is grouped by the security controls defined by the Microsoft cloud security benchmark and the related guidance applicable to Virtual WAN.

You can monitor this security baseline and its recommendations using Microsoft Defender for Cloud. Azure Policy definitions will be listed in the Regulatory Compliance section of the Microsoft Defender for Cloud portal page.

When a feature has relevant Azure Policy Definitions, they are listed in this baseline to help you measure compliance with the Microsoft cloud security benchmark controls and recommendations. Some recommendations may require a paid Microsoft Defender plan to enable certain security scenarios.

Note

Features not applicable to Virtual WAN have been excluded. To see how Virtual WAN completely maps to the Microsoft cloud security benchmark, see the full Virtual WAN security baseline mapping file.

Security profile

The security profile summarizes high-impact behaviors of Virtual WAN, which may result in increased security considerations.

Service Behavior Attribute Value
Product Category Networking
Customer can access HOST / OS No Access
Service can be deployed into customer's virtual network False
Stores customer content at rest False

Identity management

For more information, see the Microsoft cloud security benchmark: Identity management.

IM-8: Restrict the exposure of credential and secrets

Features

Service Credential and Secrets Support Integration and Storage in Azure Key Vault

Description: Data plane supports native use of Azure Key Vault for credential and secrets store. Learn more.

Supported Enabled By Default Configuration Responsibility
True False Customer

Configuration Guidance: Ensure that secrets and credentials are stored in secure locations such as Azure Key Vault, instead of embedding them into code or configuration files.

Data protection

For more information, see the Microsoft cloud security benchmark: Data protection.

DP-3: Encrypt sensitive data in transit

Features

Data in Transit Encryption

Description: Service supports data in-transit encryption for data plane. Learn more.

Supported Enabled By Default Configuration Responsibility
True False Shared

Configuration Guidance: Enable secure transfer in services where there is a native data in transit encryption feature built in. Microsoft Azure Virtual WAN provides custom routing capabilities and offers encryption for your ExpressRoute traffic. All route management is provided by the virtual hub router, which also enables transit connectivity between virtual networks. Encrypting your ExpressRoute traffic with Virtual WAN provides an encrypted transit between the on-premises networks and Azure virtual networks over ExpressRoute, without going over the public internet or using public IP addresses.

Reference: Encryption in transit

DP-6: Use a secure key management process

Features

Key Management in Azure Key Vault

Description: The service supports Azure Key Vault integration for any customer keys, secrets, or certificates. Learn more.

Supported Enabled By Default Configuration Responsibility
True False Shared

Configuration Guidance: Use Azure Key Vault to create and control the life cycle of your encryption keys. Site-to-site VPN in Virtual WAN uses pre-shared keys (PSK) which are discovered, created and managed by the customer in their Azure Key Vault. Implement Credential Scanner to identify credentials within code. Credential Scanner will also encourage moving discovered credentials to more secure locations such as Azure Key Vault.

Asset management

For more information, see the Microsoft cloud security benchmark: Asset management.

AM-2: Use only approved services

Features

Azure Policy Support

Description: Service configurations can be monitored and enforced via Azure Policy. Learn more.

Supported Enabled By Default Configuration Responsibility
True False Shared

Configuration Guidance: Use Microsoft Defender for Cloud to configure Azure Policy to audit and enforce configurations of your Azure resources. Use Azure Monitor to create alerts when there is a configuration deviation detected on the resources. Use Azure Policy [deny] and [deploy if not exists] effects to enforce secure configuration across Azure resources.

Logging and threat detection

For more information, see the Microsoft cloud security benchmark: Logging and threat detection.

LT-1: Enable threat detection capabilities

Features

Microsoft Defender for Service / Product Offering

Description: Service has an offering-specific Microsoft Defender solution to monitor and alert on security issues. Learn more.

Supported Enabled By Default Configuration Responsibility
False Not Applicable Not Applicable

Configuration Guidance: This feature is not supported to secure this service.

LT-4: Enable logging for security investigation

Features

Azure Resource Logs

Description: Service produces resource logs that can provide enhanced service-specific metrics and logging. The customer can configure these resource logs and send them to their own data sink like a storage account or log analytics workspace. Learn more.

Supported Enabled By Default Configuration Responsibility
True False Customer

Configuration Guidance: Enable resource logs for the Virtual Wan service and related resources. A variety of resource logs are available for Virtual WAN and can be configured for the Virtual WAN resource with Azure portal. You can choose to send to Log Analytics, stream to an event hub, or to simply archive to a storage account. Resource logs are supported for both ExpressRoute and P2S/S2S VPNs.

Reference: Resource logs

Next steps