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Securing Containers in Azure

Introduction

1. Network Security

  • Virtual Network Integration: Deploy containers within an Azure Virtual Network (VNet) for secure, isolated network access.
  • Network Security Groups (NSGs): Apply NSGs to restrict inbound and outbound traffic to your containers.

2. Identity and Access Management

  • Managed Identity: Assign a managed identity to your container group for secure access to other Azure services without managing credentials.
  • Azure Active Directory (AAD): Use AAD to manage access to your ACI resources and integrate with AAD for identity and access control.

3. Secure Secrets Management

  • Azure Key Vault: Store sensitive information such as database connection strings, API keys, and other secrets in Azure Key Vault, and access them securely from your containers.
  • Environment Variables: Pass secrets as environment variables, but ensure they are managed securely and not exposed in logs or code.

4. TLS/SSL

  • Use TLS/SSL to encrypt data in transit to and from your container instances, especially if they are exposed to the internet.

5. Image Security

  • Trusted Registry: Use trusted container registries like Azure Container Registry (ACR) and enable image scanning for vulnerabilities.
  • Private Images: Use private images stored in ACR or other secure registries.

6. Monitoring and Logging

  • Azure Monitor: Use Azure Monitor to collect metrics and logs for your container instances.
  • Azure Security Center: Enable Azure Security Center for advanced threat protection and security recommendations for your container instances.
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