Eldon Gabriel

System Administration & Infrastructure Security

Building, Securing, and Troubleshooting Real-World Systems

Portfolio Overview

This portfolio follows a proof of work approach, where each security concept is tested through hands-on implementation and technical analysis. Projects include system hardening, network security configuration, incident troubleshooting, and infrastructure protection aligned with industry frameworks. The goal is to convert security theory into practical controls that work in real-world environments.


Security Engineering & Control Enforcement

System Hardening

  • CIS benchmark policies
  • Least privilege enforcement
  • Registry hardening
  • Group policy controls
  • IP access restrictions

Network Security & Defense

  • Firewall rule enforcement
  • pfSense configuration
  • IPsec VPN troubleshooting
  • DNS traffic analysis
  • Misconfiguration identification
  • Access control validation

GRC & Resilience

  • NIST aligned controls
  • Risk register mapping
  • Policy enforcement
  • Technical safeguard implementation
  • Post breach remediation
  • Audit readiness maintenance

Explore My Certifications


Foundational Mentorship

George H. Ross
George H. Ross
NBC’s ‘The Apprentice’ Judge & Mentor

Instilled a disciplined evaluation of risks and thorough investigative practices essential for proactive threat hunting and forensic accuracy.

Wahida Clark
Wahida Clark
4x NYT Bestselling Author & Mentor

Reinforced the importance of clear communication and technical storytelling to translate critical risks into actionable business insights.

Explore My Portfolio


Recent Reports Banner

A structured collection of security reports, standard operating procedures, and technical investigations demonstrating applied cybersecurity skills across real-world scenarios.