Active Directory Subject Matter Expert

3 days ago


Mumbai, Maharashtra, India Crisil Full time ₹ 12,00,000 - ₹ 36,00,000 per year

Active Directory Fundamentals

  • In-depth understanding of:
  • DC Locator process
  • Kerberos authentication process
  • NTLM authentication process
  • AD replication and its components (High Watermark, UTC Table, Invocation ID, GUID, etc.)
  • Group Policy components and Group Policy Engine
  • AD trusts and their usage
  • AD security concepts

Migration and Transition (DC, DHCP & DNS)

  • Hands-on experience with transition and migration-related activities
  • End-to-end knowledge of Domain Controller upgrade process

Troubleshooting Skills

  • Strong troubleshooting skills in:
  • Kerberos
  • NTLM
  • Time sync
  • Lingering objects
  • Replication issues

Directory Services

  • Proficient in:
  • LDAP
  • Global Catalog
  • SPNs

Scripting and Automation

  • Good command of PowerShell scripting

Advanced Active Directory Concepts

  • Detailed understanding of:
  • SID filtering
  • SID quarantine
  • Selective authentication
  • Strict replication
  • Metadata cleanup process and requirements

Replication and Group Policy

  • In-depth knowledge of:
  • AD replication and its components (High Watermark, UTC Table, Invocation ID, GUID, etc.)
  • FRS and DFSR
  • Thorough knowledge of Group Policy processing

Windows Time Synchronization Configuration

  • NTP Server Setup: Configure and manage Network Time Protocol (NTP) servers to provide accurate time synchronization.
  • Client Configuration: Set up client devices to synchronize with the NTP server.
  • Stratum Management: Ensure NTP servers are configured with appropriate stratum levels for optimal accuracy.
  • Time Source Selection: Choose reliable time sources, such as external time servers or GPS.
  • Leap Second Handling: Implement mechanisms to handle leap seconds and prevent time discontinuities.
  • Security Configuration: Secure NTP servers against unauthorized access and tampering.
  • Monitoring and Logging: Monitor NTP server performance and log synchronization events.
  • Troubleshooting: Diagnose and resolve time synchronization issues, such as clock drift and synchronization failures.

Domain Name System (DNS)

  • DNS Server Configuration: Set up and manage DNS servers to resolve domain names to IP addresses.
  • Zone Management: Create and manage DNS zones, including primary and secondary zones.
  • Record Management: Maintain DNS records (A, AAAA, CNAME, MX, etc.) for accurate name resolution.
  • Dynamic Updates: Implement dynamic DNS updates for automated record management.
  • Failover and Load Balancing: Implement DNS failover and load balancing for high availability.
  • Security and Compliance: Protect against DNS-based attacks (e.g., DDoS, DNS spoofing).
  • Monitoring and Troubleshooting: Monitor DNS services and resolve name resolution issues.

Problem Analysis and Documentation

  • RCA (Root Cause Analysis) preparing skills
  • Documentation skills

Disaster Recovery and Backup

  • Knowledge of:
  • Disaster recovery
  • AD backup and restore concepts, process, and different ways

Dynamic Host Configuration Protocol (DHCP)

  • DHCP Server Configuration: Automate IP address assignment.
  • Scope Management: Manage address pools and lease durations.
  • Reservation Management: Ensure consistent IP for specific devices.
  • Failover and Load Balancing: Implement high availability.
  • Lease Monitoring: Optimize IP address usage.
  • Security and Compliance: Protect against unauthorized access.
  • Troubleshooting: Resolve IP conflicts and connectivity issues.

Public Key Infrastructure (PKI)

  • CA Deployment and Management: Issue and manage digital certificates.
  • Certificate Templates: Create templates for various uses.
  • Certificate Enrollment: Implement enrollment processes.
  • Certificate Revocation: Manage revocation lists.
  • Key Management: Securely manage private keys.
  • PKI Integration: Integrate with security solutions.
  • Policy Management: Enforce PKI policies and compliance.
  • Monitoring and Auditing: Monitor PKI security and performance.
  • Troubleshooting: Resolve certificate and key issues.

Active Directory Federation Services (ADFS)

  • Federation Configuration: Design and manage ADFS for SSO.
  • Claims-Based Authentication: Configure secure authentication policies.
  • Trust Relationships: Establish and maintain trust with partners.
  • Token Signing Certificates: Manage certificates for token security.
  • ADFS Integration: Integrate with other identity solutions.
  • Monitoring and Troubleshooting: Ensure ADFS performance and resolve issues.

Microsoft Intune

  • Device Management: Enroll and manage devices (mobile, desktop, and IOS) using Intune's MDM and MAM capabilities.
  • Policy Configuration: Create and enforce device compliance policies, configuration profiles, and security baselines.
  • Application Management: Deploy, update, and manage applications across various platforms.
  • Conditional Access: Implement conditional access policies to control access to corporate resources based on device compliance and user risk.
  • Endpoint Security: Understand endpoint security settings, including antivirus, firewall, and threat protection.
  • Remote Actions: Perform remote actions like wiping, locking, or resetting device passcodes.
  • Monitoring and Reporting: Monitor device status, compliance, and security events, and generate reports for insights.
  • Integration: Integrate Intune with other Microsoft 365 services and third-party solutions for enhanced functionality.
  • User Support: Provide user support for device enrollment, policy compliance, and application issues.

Expertise on Identity & Access Management – Entra ID

  • Microsoft Entra ID (Azure Active Directory): Configure and manage Azure AD for user authentication, authorization, and directory services.
  • Microsoft Entra External ID: Set up and manage external identities for partner collaboration and customer access.
  • Microsoft Entra ID Governance: Implement identity governance features for access reviews, entitlement management, and lifecycle workflows.
  • Microsoft Entra ID Protection: Configure and monitor identity protection policies to detect and mitigate identity-based risks.
  • Microsoft Entra Internet Access: Manage access to internet resources and applications through secure gateways.
  • Microsoft Entra Private Access: Secure access to private networks and resources using VPN and other secure connectivity solutions.
  • Microsoft Entra Permissions Management: Manage and audit permissions across applications and services to ensure least privilege access.
  • Microsoft Entra Verified ID: Implement verified ID solutions for enhanced identity verification and trust.
  • Microsoft Entra Workload ID: Manage and assign identities specifically for workloads and applications within Microsoft Entra.
  • Microsoft Entra Domain Services: Provide managed domain services for legacy applications and seamless integration with Azure AD.
  • Azure Key Vault: Securely store and manage cryptographic keys, secrets, and certificates.

Key Responsibilities:

  • Policy Configuration: Develop and enforce identity and access management policies across all Entra services.
  • User and Group Management: Manage user accounts, groups, and roles for efficient access control.
  • Security Monitoring: Monitor identity and access activities for anomalies and potential security threats.
  • Compliance and Auditing: Ensure compliance with regulatory standards and conduct regular audits of identity and access configurations.
  • Integration: Integrate Entra services with other Microsoft and third-party solutions for comprehensive identity and access management.
  • User Support: Provide support for identity and access-related issues, ensuring a smooth user experience.
  • Documentation: Maintain detailed documentation of identity and access management configurations, policies, and procedures.


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