Blog

Technical writing on infrastructure, security, and cloud engineering — guides, deep dives, and lessons learned.

Security & Identity10 min read

How to Deploy Trusted FortiGate SSL VPN Certificates in Active Directory Environments Using AD CS, SAN, and GPO

A production-focused technical guide to configuring trusted FortiGate SSL VPN certificates. Learn how to resolve silent 98% handshake drops using Windows AD CS, custom SAN parameters, and GPO certificate distribution.

May 23, 2026
Networking & Security12 min read

Designing Enterprise WAN Redundancy: Dual-WAN SD-WAN with Active-Passive IPsec VPN Failover

A deep-dive, step-by-step engineering guide to configuring active-passive dual-tunnel failover across FortiGate Hub, Cisco IOS, and pfSense spokes.

May 22, 2026
Security3 min read

Implementing Zero Trust Architecture in Enterprise Networks

A comprehensive guide to designing and deploying Zero Trust principles across enterprise infrastructure, from identity verification to micro-segmentation.

September 15, 2024