Table of Contents
Azure Functions support Managed Identities for Azure resources, allowing your functions to authenticate to other Azure services securely without storing credentials in code.
Integrate Azure Active Directory with your serverless applications to enable secure sign-on for users and services. This provides an OAuth 2.0 authentication system that supports multi-factor authentication.
Azure Functions provides function and host keys that serve as API keys. You should use these keys to protect HTTP-triggered functions from unauthorized access.
Configure CORS in your serverless application to specify which domains can access your functions. This prevents unwanted domains from making requests to your serverless resources.
Integrate your Azure Functions with an Azure Virtual Network through VNet integration or deploy them in an App Service Environment (ASE) to provide enhanced network security.
Use Network Security Groups to filter network traffic to and from Azure resources in an Azure Virtual Network. NSGs can be applied to subnets, defining inbound and outbound rules to control traffic.
Use these services to define Web Application Firewall (WAF) policies for your serverless applications. They protect your applications from common web vulnerabilities and exploits.
Encryption:
Store sensitive data like certificates, connection strings, and keys in Azure Key Vault. Use the Key Vault references for App Service and Azure Functions to securely access this data.
Set up Azure Monitor to collect metrics and logs from your serverless applications for real-time insights into their performance and security.
Leverage Azure Security Center for continuous assessment and recommendations to secure your serverless applications. It can alert you to misconfigurations or suspicious activities.
Ensure that your serverless solutions comply with standards such as ISO, PCI DSS, HIPAA, and more. Azure provides built-in compliance controls to help you meet these requirements.
HTTP-triggered Azure Function with AAD:
Azure Function Accessing Azure SQL Database:
Azure Function with VNet Integration:
Securing serverless compute in Azure requires a comprehensive strategy that includes network security, identity and access management, data security, and monitoring for potential threats. Following the guidelines provided by Azure security best practices can help ensure that your serverless applications remain secure and compliant.
Answer: True
Explanation: Managed Service Identity (MSI) is a feature of Azure Functions that simplifies managing credentials for accessing other Azure services by automatically managing the identities.
Answer: All of the above
Explanation: Azure Functions can be secured using function keys, setting up network restrictions, or using various authentication providers.
Answer: False
Explanation: Azure Logic Apps requires additional security measures, such as configuring access control and securing the connections to other services.
Answer: App Service Authentication / Authorization
Explanation: App Service Authentication / Authorization is a built-in feature of Azure App Service that enables you to secure your app with authentication and authorization without altering backend code.
Answer: False
Explanation: Azure WebJobs do support Managed Identity, which allows secure access to Azure services without storing credentials in code.
Answer: To manage secrets, keys, and certificates used by cloud applications and services
Explanation: Azure Key Vault is used to securely store and manage secrets, keys, and certificates that cloud applications and services might need.
Answer: False
Explanation: While Azure Active Directory is commonly used for RBAC in Azure Functions, other mechanisms and identity providers can also be used for access control.
Answer: Azure Functions
Explanation: Azure Functions is a serverless compute service that enables you to run code in response to events without managing infrastructure.
Answer: Enabling Transparent Data Encryption (TDE)
Explanation: Transparent Data Encryption (TDE) is used to encrypt SQL databases at rest, not to protect endpoints of services like Azure Logic Apps.
Answer: True
Explanation: Azure Policy can be used to enforce organizational standards and assess compliance at-scale for Azure Functions, Logic Apps, and App Services.
Answer: Key Vault binding
Explanation: The Key Vault binding allows Azure Functions to securely access secrets stored in Azure Key Vault without having them in plain text in the application’s settings.
Answer: Access Restrictions
Explanation: Access Restrictions in Azure App Service allow you to create allow/deny lists for inbound network traffic based on IP addresses.
Serverless computing is a cloud computing model that allows developers to build and run applications without having to worry about managing servers or infrastructure.
Azure Functions is a serverless compute service that allows developers to build and run event-driven applications.
You can secure Azure Functions by implementing authentication and authorization, using HTTPS, implementing input validation, and managing secrets securely.
Azure Key Vault is a cloud service that allows you to securely store and manage cryptographic keys, certificates, and secrets.
You can use Azure Key Vault to store secrets and retrieve them securely in your Azure Functions by leveraging managed identities and access policies.
Azure Active Directory is a cloud-based identity and access management service that allows you to manage users and groups and control access to your applications and resources.
You can use Azure AD to authenticate users and control access to your Azure Functions by enabling App Service Authentication and configuring Azure AD as an identity provider.
Azure Application Gateway is a load balancer that allows you to manage traffic to your web applications.
You can use Azure Application Gateway to enforce SSL/TLS encryption and configure WAF rules to protect your Azure Functions from common web vulnerabilities.
The principle of least privilege is a security concept that states that a user should be given the minimum level of access necessary to perform their job functions. This helps to limit the potential damage that can be caused by a compromised account or application.
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