Case studies

Infrastructure, written up properly

Real-world incidents, recoveries and technical deep-dives from hands-on field engineering and lab work. Each one documents the problem, the diagnostic process and the resolution in full, including the parts that didn't go to plan.

Research paper

JITadmin access, approved and time-boxed

Least privilege in a hybrid SME

Designing and evaluating a hybrid least-privilege access architecture with Active Directory, Microsoft Entra ID, RBAC and Just-In-Time privilege elevation: meaningful Zero Trust-aligned security without a full architectural overhaul.

  • Cybersecurity
  • Zero Trust
  • Identity & Access

Homelab build

~30 srecovery time, zero data loss

SQL Server 2022 dual-layer HA

SQL Server 2022 FCI on Windows Server 2022 Hyper-V, with WSFC and iSCSI shared storage. Validated through planned failover, a forced node crash and live migration.

  • SQL Server 2022
  • High Availability
  • Hyper-V

Field case study

< 5 hfull remote recovery

Firewall recovery after ZFS corruption

A production firewall became unbootable after a power outage corrupted its ZFS filesystem. Config retrieved, OS reinstalled and configuration restored, fully remotely over a serial console.

  • Network Infrastructure
  • Firewall Recovery
  • FreeBSD

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