Implementing Azure Zero Trust requires a clear understanding of its core principles.
Azure Zero Trust is based on five core principles: verify explicitly, use least privilege, authenticate and authorize, limit horizontal trust, and psychically verify.
These principles are designed to provide a robust and secure cloud adoption experience.
By following these principles, organizations can reduce the risk of a breach and protect their sensitive data.
Azure Zero Trust Architecture
Azure Zero Trust Architecture is designed to ensure secure migration to the cloud. This is achieved through a reference architecture that includes all necessary components for a common deployment pattern in production environments.
The reference architecture includes storage services and a hub VNet, which are essential for supporting applications in Azure. Nexigen provides a way to organize Azure infrastructure components and subscriptions with a diagram outlining the different sections.
A key aspect of Azure Zero Trust Architecture is implementing Zero Trust principles by addressing larger pieces hosted in Azure. This involves using products such as Microsoft Defender for Cloud and Azure Monitor for each Azure subscription.
To ensure a safe and secure migration to Azure, companies can work with Nexigen. Their proven strategy involves a RISK reduction approach with a thorough security assessment to the client environment.
Azure offers a robust solution that includes cloud-ready authentication apps, web apps with legacy authentication, remote server administration, segment cloud administration, and network micro-segmentation. These features are backed by trusted risk-based policies, identity and access management, SSO, and native security capabilities.
Here are some key features of Microsoft Azure's solution:
- Cloud-ready authentication apps
- Web apps with legacy authentication
- Remote server administration
- Segment cloud administration
- Network micro-segmentation
Security and Compliance
Security and Compliance is a top priority for Azure Zero Trust. It's designed to provide robust security features to protect your organization's assets.
With Azure Zero Trust, you can leverage Azure Active Directory (Azure AD) Conditional Access to enforce security policies and ensure that only authorized users have access to sensitive resources. This includes features like multi-factor authentication and session controls.
The Zero Trust model assumes that no user or device is trusted by default, and instead, verifies identity and access on an ongoing basis. This approach helps to prevent lateral movement and data breaches.
Azure AD provides detailed audit logs and compliance reporting to help you meet regulatory requirements and ensure security compliance. These logs can be used to track user and device activity, and to identify potential security threats.
Conditional Access policies can be configured to require multi-factor authentication for sensitive resources, adding an extra layer of security to protect against unauthorized access. This helps to prevent phishing and other types of attacks that rely on stolen or compromised credentials.
Identity and Access Management
Identity and Access Management is a crucial aspect of Azure Zero Trust. Multifactor authentication with conditional access is a must-have, and it's set up within Microsoft Entra ID and related portals.
For secure access, configure multifactor authentication with conditional access, and use privileged access workstations (PAWs) to access virtual machines directly. This reduces the risk of compromise by 99.9%.
Azure AD has two main features for enabling the first principle of Zero Trust: time-limited access and role-based access control. Time-limited access packages can be created for specific user groups using the entitlement management feature, available on the Azure AD Premium P2 plan.
To configure secure access, follow these steps:
- Configure secure communication within the Azure environment between components that are accessing virtual machines directly
- Set up multifactor authentication with conditional access
- Use privileged access workstations (PAWs)
For optimal policies, use Azure AD Privileged Identity Management (PIM) tool to configure the optimal policies for the next types of roles:
- Global Administrator
- Privileged Role Administrator
- Exchange Administrator
- SharePoint Administrator
Remember, usernames and passwords can be 100% compromised, but using multifactor authentication reduces the risk of compromise by 99.9%.
Implementation and Management
Implementing and managing Azure Zero Trust requires careful consideration of various factors. Azure AD provides a robust toolkit for implementing Zero Trust security principles, including multi-factor authentication, conditional access policies, and identity protection.
To get started with Azure AD, you can follow these steps: connect all users, groups, and devices to AD, implement authentication options, and integrate all corporate applications with Azure AD. Azure AD supports various types of integrations, including OAuth2.0, SAML, Kerberos, and Form-based authentication applications.
You can automate user identities distribution to your apps by setting up automatic distribution of user identities to different cloud apps. Additionally, you can organize logging and reporting by collecting necessary log data for audits and integrating it with Azure Sentinel.
Here is a summary of the key Azure AD features for implementing Zero Trust:
- Multi-Factor Authentication (MFA)
- Conditional Access Policies
- Identity Protection
- Privileged Identity Management (PIM)
- Just-in-Time (JIT) Access
- Azure AD Application Proxy
- Identity Governance
These features provide a solid foundation for implementing Zero Trust security in Azure. By leveraging these capabilities, you can establish a strong security posture and protect your critical resources.
Migrating to Microsoft with Nexigen
Migrating to Microsoft Azure with Nexigen is a safe and secure process that ensures your company's transition is seamless and protected. Nexigen's proven strategy involves a thorough security assessment of your client environment, followed by best practice architecture and a standardized change management process.
By implementing Zero Trust principles, Nexigen protects your company on both the front and back sides, ensuring that your migration to Azure is secure and reliable. This approach includes a robust maintenance program that guarantees ongoing support and security.
Nexigen's expertise in implementing Azure means that they can handle all aspects of your migration, from designing and implementing security principles to changes in cloud infrastructure and deployment strategy. Their multi-disciplinary approach ensures that your company's security posture is strengthened throughout the process.
Here are some key considerations when migrating to Azure with Nexigen:
- Verification: Nexigen's approach involves verifying explicitly, using least privileged access, and assuming breach.
- Least Privileged Access: Nexigen's strategy includes using least privileged access to ensure that users only have the access they need to perform their jobs.
- Breach Assumption: Nexigen's approach assumes that a breach has occurred, and therefore, all access is restricted until verified.
By working with Nexigen, you can ensure that your migration to Azure is safe, secure, and reliable, with a strong foundation for Zero Trust security.
Implement VM Host
Implementing VM Host involves several key steps to ensure security and control. You can use the Virtual Machine Applications feature to control the applications that are installed on virtual machines, selecting which virtual machine applications to install and ensuring that only trusted applications are available for users.
To protect and harden your virtual machines in Azure, you can follow the training path provided in the Microsoft catalog, which includes resources on virtual machines in Azure.
A common deployment pattern for organizations migrating on-premises applications to Azure includes a hub VNet and storage services, which can be organized using tools like Nexigen. This approach helps to implement Zero Trust by addressing each of the larger pieces hosted in Azure.
To secure virtual machine boot components, you should configure security for the boot components when creating the virtual machine, selecting security type and using Secure boot and vTPM. This ensures that the virtual machine boots with verified boot loaders, OS kernels, and drivers signed by trusted publishers.
Here are some key considerations for securing virtual machine boot components:
- Configure security for the boot components when creating the virtual machine.
- Select security type and use Secure boot and vTPM.
- Securely deploy virtual machines with verified boot loaders, OS kernels, and drivers signed by trusted publishers.
- Securely protect keys, certificates, and secrets in the virtual machines in a Trusted Platform Module.
- Gain insights and confidence of the entire boot chain's integrity.
- Ensure workloads are trusted and verifiable.
To configure secure access, you can set up multifactor authentication with conditional access, use privileged access workstations (PAWs), and configure secure communication within the Azure environment between components that are accessing virtual machines directly.
Next Steps
If you're looking to implement Zero Trust principles with Azure, it's essential to start by connecting all users, groups, and devices to Azure Active Directory (Azure AD). This will provide the foundation for a secure and robust identity and access management system.
To get started, you can use Azure AD Connect to create the optimal topology and configurations for your organization. This will help you implement authentication options that make the most sense for your business.
Azure AD supports various integration types, including OAuth2.0 or SAML, Kerberos, and Form-based authentication applications that can be integrated via Azure AD Application Proxy. You can also leverage pre-built integrations for legacy applications like Akamai Enterprise Application Access (EAA), Citrix Application Delivery Controller (ADC), and F5 Big-IP APM.
To automate user identities distribution to your apps, you can set up the automatic distribution of user identities in Azure AD to different cloud apps. This will help you effectively scale user identity management across cloud and hybrid environments.
Here are some key Azure AD features to consider when implementing Zero Trust principles:
- Multi-Factor Authentication (MFA) to ensure only authorized users can access your resources
- Conditional Access Policies to define granular access rules based on user location, device health, or sign-in risk
- Identity Protection to detect and mitigate identity-related risks using advanced machine learning algorithms
- Privileged Identity Management (PIM) to provide just-in-time (JIT) access and time-bound privileges
- Azure AD Application Proxy to securely access on-premises resources from the internet
- Identity Governance to manage and enforce access controls, define access policies, and implement approval workflows
By leveraging these features and capabilities, you can establish a strong foundation for Zero Trust security and protect your critical resources.
Implementing
Implementing Zero Trust security requires a comprehensive approach that involves several key steps.
You can start by connecting all users, groups, and devices to Azure Active Directory (Azure AD) and implementing authentication options that make sense for your organization.
To integrate all corporate applications with Azure AD, you can use OAuth2.0 or SAML, or Kerberos and Form-based authentication applications that can be integrated via Azure AD Application Proxy.
Azure AD also supports pre-built integrations for legacy applications, including Akamai Enterprise Application Access (EAA), Citrix Application Delivery Controller (ADC), F5 Big-IP APM, Pulse Secure Virtual Traffic Manager (VTM), and Kemp.
To automate user identities distribution to your apps, you can set up automatic distribution of user identities to different cloud apps and implement custom business rules for different SaaS apps.
It's essential to organize logging and reporting to collect necessary log data for audits and understand user working patterns and detect potential risks.
Microsoft Intune is a service for securing users' corporate mobile devices and exercising remote updates and control over them.
To achieve zero trust security, you can use HashiCorp Consul, Vault, Boundary, and Microsoft Azure together to enhance zero trust security initiatives at all levels of dynamic infrastructure with identity-based security.
Implementing Zero Trust security requires explicit verification of every user, device, and request attempting to access resources, least privilege access, assuming breach, never trusting, always verifying, and granular access controls.
Here are some key features to consider when implementing Zero Trust security with Azure AD and Intune:
- Device Enrolment: Intune provides seamless enrolment options for various device types, including Windows, macOS, iOS, and Android.
- Compliance Policies: With Intune, you can define and enforce compliance policies to ensure that devices adhere to your organization’s security standards.
- Endpoint Protection: Intune offers robust endpoint protection capabilities to safeguard devices against malware, phishing attempts, and other security threats.
- Data Protection and Encryption: Intune offers data protection and encryption capabilities to ensure the security of sensitive data.
Device Management and Integration
Device management and integration are crucial components of a robust Zero Trust approach. Intune provides seamless enrolment options for various device types, including Windows, macOS, iOS, and Android.
To ensure compliance, you can define and enforce policies that include requirements such as device encryption, operating system version, passcode complexity, and more. Devices that fail to meet compliance standards can be restricted from accessing corporate resources.
Intune offers robust endpoint protection capabilities to safeguard devices against malware, phishing attempts, and other security threats. You can configure and deploy antivirus software, firewall rules, and real-time threat detection to protect devices from malicious activities.
To integrate devices with Azure AD, you can connect all users, groups, and devices to AD and implement authentication options that make sense for your organization. This includes using Azure AD Connect to create the optimal topology and configurations.
Here are the types of integrations Azure AD supports:
- OAuth2.0 or SAML
- Kerberos and Form-based authentication applications that can be integrated via Azure AD Application Proxy
Azure also has pre-built integrations for legacy applications, including Akamai Enterprise Application Access (EAA), Citrix Application Delivery Controller (ADC), F5 Big-IP APM, Pulse Secure Virtual Traffic Manager (VTM), and Kemp.
Endpoint Protection
Endpoint protection is crucial in safeguarding devices against malware, phishing attempts, and other security threats. Intune offers robust endpoint protection capabilities to protect devices from malicious activities.
You can configure and deploy antivirus software, firewall rules, and real-time threat detection to safeguard devices. Microsoft Defender for Cloud provides advanced threat detection and protection for Azure infrastructure.
Microsoft Defender for Cloud verifies the activities occurring on virtual machines based on Microsoft's threat intelligence. It looks for specific configurations and activities that suggest a breach.
Here are some advanced threat protection features of Microsoft Defender for Cloud:
- Access to the Microsoft Defender for Endpoint data that is related to vulnerabilities, installed software, and alerts for your endpoints for endpoint detection and response (EDR).
- Defender for Cloud's integrated vulnerability assessment scanner for servers.
- Discover vulnerabilities and misconfigurations in real time with Microsoft Defender for Endpoint, and without the need of other agents or periodic scans.
- Defender for Cloud's integrated Qualys scanner for Azure and hybrid machines allows you to use a leading tool in real-time vulnerability identification without the need of a Qualys license.
- Implement Just-in-time virtual machine access in Defender for Cloud. This creates an explicit deny rule for RDP/SSH and gives you JIT access at the server level when you need it and allows you to limit the period of access.
- File integrity monitoring in Defender for Cloud provides you to change monitoring of files and registries of the operations system, application software, and other changes that allow you to validate the integrity of your file systems.
- Adaptive application controls in Defender for Cloud provides an automated solution for creating and defining allow list for known safe applications and generates security alerts if a new application runs other than those you define as safe for use.
- Adaptive network hardening in Defender for Cloud uses machine learning algorithms that calculate your current traffic, threat intelligence, indicators of compromise, and known trusted configurations to provide recommendations for hardening your Network Security Groups.
Implementing Device Management with Intune
Intune provides seamless enrolment options for various device types, including Windows, macOS, iOS, and Android.
By enrolling devices into Intune, you gain visibility and control over the devices accessing your organisation’s resources, allowing you to enforce security policies and ensure compliance.
Compliance policies can be defined and enforced to ensure that devices adhere to your organization’s security standards, including requirements such as device encryption, operating system version, and passcode complexity.
Devices that fail to meet compliance standards can be restricted from accessing corporate resources.
Intune offers robust endpoint protection capabilities to safeguard devices against malware, phishing attempts, and other security threats, including the ability to configure and deploy antivirus software and real-time threat detection.
Secure application management can be enabled across devices, allowing you to control the deployment and management of apps, including distributing applications from public app stores or deploying line-of-business (LOB) apps specific to your organisation.
Data protection and encryption capabilities can be enforced to ensure the security of sensitive data, including enforcing encryption on devices to protect data at rest and implementing data loss prevention (DLP) policies to prevent data leakage.
Conditional Access Integration with Azure AD enables device compliance checks as a prerequisite for accessing corporate resources, ensuring that only devices that meet the specified compliance standards are granted access.
Remote device management capabilities allow IT administrators to troubleshoot issues, apply configuration changes, and perform remote wipes or selective data wipes if a device is lost or stolen.
Device Enrolment: Intune provides seamless enrolment options for various device types.Compliance Policies: Intune enables you to define and enforce compliance policies to ensure devices adhere to your organization’s security standards.Endpoint Protection: Intune offers robust endpoint protection capabilities to safeguard devices against security threats.Application Management: Intune enables secure application management across devices.Data Protection and Encryption: Intune offers data protection and encryption capabilities to ensure the security of sensitive data.Conditional Access Integration: Intune integrates with Azure AD’s Conditional Access policies to enforce device compliance checks.Remote Device Management: Intune provides comprehensive remote device management capabilities.
Sources
- https://www.nexigen.com/cyber-security/microsoft-azure-zero-trust-architecture/
- https://learn.microsoft.com/en-us/security/zero-trust/azure-infrastructure-virtual-machines
- https://www.hashicorp.com/solutions/zero-trust-security-with-hashicorp-and-microsoft-azure
- https://newscaler.com/azure-ad-and-intune-implementing-a-zero-trust-security-model-introduction/
- https://www.infopulse.com/blog/enabling-zero-trust-azure-ad
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