Training Course Outline – Active Directory Certificate Services (AD CS):
- Introduction to PKI and AD CS
This section lays the groundwork by defining PKI and explaining the role of AD CS.
- Understanding PKI: What is a Public Key Infrastructure? Explore core components like CAs, certificates, and certificate revocation lists (CRLs).
- What is AD CS?: Define the AD CS server role and its functions.
- PKI Use Cases: Discuss practical applications, including secure web server communication (SSL/TLS), email encryption (S/MIME), VPNs, Wi-Fi authentication, and smart card logins.
- PKI Hierarchy: Learn about different architectures, such as a single-tier, two-tier, or three-tier hierarchy, and the distinction between a Root CA and Subordinate CAs.
- Certificate Life Cycle: An overview of the process from enrollment and issuance to renewal and revocation.
- Planning and Deploying the AD CS Infrastructure
This module focuses on the practical steps of setting up a PKI.
- Design Considerations: Planning for a secure and resilient PKI, including deciding on the CA hierarchy and placing CAs.
- Installing the CA Role: A step-by-step guide to installing the AD CS role on a Windows Server.
- Configuring the Root and Subordinate CAs: Understanding the crucial differences in configuring an offline root CA for security and an online subordinate CA for daily operations.
- CA Extensions: Configuring Authority Information Access (AIA) and CRL Distribution Points (CDPs) to ensure clients can find and validate certificates.
- Certificate Enrollment and Management
This section covers how certificates are issued and managed throughout their lifecycle.
- Certificate Templates: Learning to create and manage certificate templates to standardize and automate certificate issuance.
- Auto-enrollment: Configuring Group Policy to automatically request, issue, and renew certificates for users and computers.
- Manual Enrollment: Understanding manual methods of requesting certificates via the CA web enrollment pages.
- Key Archival and Recovery: Implementing a process to archive private keys for recovery, which is essential for services like Encrypting File System (EFS) and S/MIME.
- Revocation and Validation
This module is critical for maintaining the security of the PKI.
- Certificate Revocation: Understanding why and how to revoke a certificate.
- CRLs: Learning how CRLs work, how to configure their publication, and how clients use them to check for revoked certificates.
- Online Certificate Status Protocol (OCSP): Deploying and configuring the Online Responder service to provide a real-time status check of a certificate’s validity, reducing reliance on large CRLs.
- Advanced Topics and Security
This final section covers more complex and critical aspects of AD CS.
- AD CS and Network Security: Integrating AD CS with other security features like IPsec, secure wireless, and smart card logins.
- AD CS Backup and Recovery: Developing a robust backup and disaster recovery plan for the CA database and private keys.
- Role-Based Access Control: Implementing administrative role separation to delegate CA management tasks securely.
- Troubleshooting: Diagnosing and resolving common issues with certificate enrollment, validation, and revocation.






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