Active Directory & Domain Configuration

Identity Is the New Perimeter

Active Directory underpins authentication, authorisation, and policy enforcement for millions of organisations worldwide. Getting it right is foundational to security and operational efficiency. Getting it wrong — even subtly — opens the door to privilege escalation, lateral movement, and compliance failures.

Greenfield Deployment

For new environments we design the AD forest and domain structure from first principles: forest / domain topology, site-link topology, OU hierarchy aligned to your administrative model, and a naming convention that scales. We document every design decision and provide runbooks for your team.

Migration & Consolidation

Mergers, acquisitions, and long-overdue infrastructure refreshes often require migrating users, computers, groups, and GPOs across domain or forest boundaries. We have extensive experience with ADMT (Active Directory Migration Tool), Quest Migration Manager, and scripted migrations using PowerShell and the ActiveDirectory module — always with a tested rollback plan.

Security Hardening

Default AD installations carry significant security debt. Our hardening engagements typically address:

• Tiered administration model (Tier 0 / 1 / 2) and Protected Users security group adoption.
• LAPS (Local Administrator Password Solution) deployment across the estate.
• Kerberos delegation audit — identifying unconstrained, constrained, and resource-based delegation.
• Stale account hygiene — automated identification and disablement of inactive users and computers.
• GPO consolidation, conflict resolution, and RSOP baselining.
• Audit policy and event-forwarding to SIEM.

Azure AD & Hybrid Identity

Most organisations now operate a hybrid model with cloud applications requiring Azure Active Directory (Entra ID). We implement and maintain Azure AD Connect synchronisation, Seamless Single Sign-On (SSO), Password Hash Sync or Pass-through Authentication, and Conditional Access policies — ensuring your on-premises and cloud identities remain consistent, secure, and auditable.