KNOWLEDGE BASE

Documentation

Technical documentation from independent infrastructure and administration projects — written for repeatability and handoff.

Architecture Note

Active Directory Design — Enterprise Infrastructure Lab

Tier-oriented Active Directory OU design, GPO inventory, and validation procedures for the Enterprise Infrastructure Lab domain (jeremycain.org).

SOP

Configuring SPF, DKIM, DMARC and Email Aliases

Implement authenticated email for a custom domain hosted in Hostinger using Zoho Mail.

Architecture Note

Network Topology — Enterprise Infrastructure Lab

Five-VLAN segmented lab network built around pfSense, Suricata, and Cisco switching to practice enterprise segmentation, firewall-policy, and IDS/IPS patterns.