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MReyna22/README.md

Hi, I’m Misael Reyna

Cybersecurity Graduate Student | Military Veteran | Hands-On IT and Security Professional

I am a cybersecurity graduate student at Northern Illinois University with a background in criminology, military service, and hands-on technical problem-solving.

As a United States Marine Corps and United States Army veteran, I bring discipline, adaptability, leadership, and a mission-focused mindset to Information Technology (IT) and cybersecurity.

My goal is to build a career protecting systems, strengthening networks, and helping organizations solve real-world security challenges. I use GitHub to document my technical projects, troubleshooting processes, lessons learned, and continued development as a cybersecurity professional.


Current Focus

  • Network security and segmentation
  • Linux system administration
  • Windows troubleshooting and recovery
  • Firewall configuration and access control
  • Virtual Local Area Networks (VLANs)
  • Cybersecurity labs and practical security exercises
  • Technical documentation and project reporting
  • Ethical hacking and vulnerability assessment fundamentals

Featured Projects

Secure Home Network with OPNsense and Omada

I am designing a cybersecurity-focused home network using an OPNsense firewall, Omada managed switching, a wireless access point, and segmented Virtual Local Area Networks (VLANs).

Project areas include:

  • Management, trusted-device, Internet of Things (IoT), and guest networks
  • Firewall rules and traffic-control policies
  • Dynamic Host Configuration Protocol (DHCP) configuration
  • Wired and wireless network segmentation
  • Network validation and security testing
  • Troubleshooting and change documentation
  • Network diagrams and configuration records

Project status: Planning and hardware acquisition


R36S Lite Cyberdeck

I am converting an R36S retro gaming handheld into a lightweight Linux-based cyberdeck while preserving its gaming functionality.

Project areas include:

  • Linux filesystem analysis
  • Firmware recovery and restoration
  • Removable-media security practices
  • Secure Shell (SSH) configuration
  • ARM-based Linux administration
  • Storage imaging and data recovery
  • Hardware compatibility testing
  • Troubleshooting and technical documentation

Project status: In progress


Windows 11 Bootable USB Recovery and Installation Media

I recovered and repurposed a previously Linux-formatted USB drive to create Windows 11 installation media and perform a clean operating system installation on a nonfunctional computer.

Project areas include:

  • Windows storage troubleshooting
  • Disk and partition management
  • Unified Extensible Firmware Interface (UEFI) configuration
  • Bootable installation media creation with Rufus
  • Windows recovery error analysis
  • Clean operating system installation
  • Hardware and architecture validation
  • Windows activation and licensing research
  • Step-by-step technical documentation

Project status: In progress


Technical Skills

Operating Systems

  • Windows 11
  • Kali Linux
  • Linux command-line environments
  • ARM-based Linux systems

Networking and Security

  • OPNsense
  • Omada Software-Defined Networking (SDN)
  • Virtual Local Area Networks (VLANs)
  • Firewall policies
  • Network segmentation
  • Internet Protocol (IP) addressing
  • Dynamic Host Configuration Protocol (DHCP)
  • Secure Shell (SSH)
  • Network scanning with Nmap
  • Access control fundamentals
  • Vulnerability assessment fundamentals

Virtualization and Technical Support

  • VMware
  • Virtual machines
  • USB device passthrough
  • Disk and partition troubleshooting
  • Operating system installation
  • System recovery
  • Bootable media creation
  • Hardware and software troubleshooting

Documentation and Analysis

  • Technical documentation
  • Troubleshooting logs
  • Evidence collection
  • Project planning
  • Security research
  • Risk awareness
  • Root-cause analysis
  • Validation testing

Education

Master’s Degree in Cybersecurity — In Progress

Northern Illinois University

Bachelor of Science in Criminology

DePaul University

Graduated June 2025

Associate Degree in Applied Social Science, Criminal Justice

College of DuPage


Military and Academic Background

  • United States Marine Corps veteran
  • United States Army infantry veteran
  • Dean’s Award for Scholastic Excellence
  • Former Vice President of the Alpha Phi Sigma Criminology Honor Society
  • Brother of Phi Alpha Delta Pre-Law Fraternity
  • Member of the Phi Alpha Delta Society of Scholars

Currently Developing

I am continuing to strengthen my knowledge and practical skills in:

  • Cybersecurity operations
  • Network defense
  • Security monitoring
  • Vulnerability management
  • Ethical hacking
  • Incident response
  • Linux administration
  • Enterprise network security
  • Security documentation
  • Information Technology support

Career Interests

I am interested in opportunities involving:

  • Cybersecurity
  • Network security
  • Security operations
  • Information Technology support
  • Systems administration
  • Infrastructure security
  • Technical support
  • Junior cybersecurity analyst roles

Professional Strengths

  • Military leadership and discipline
  • Analytical problem-solving
  • Adaptability
  • Attention to detail
  • Technical curiosity
  • Clear documentation
  • Mission-focused execution
  • Continuous learning

Connect With Me

I am interested in connecting with cybersecurity professionals, Information Technology leaders, military veterans in technology, mentors, and recruiters.


When there's a will, There's a way.

Pinned Loading

  1. AD_HL_1 AD_HL_1 Public

    Home-Lab Active Directory: Install and Config

    PowerShell 1

  2. artemis-simulated-security-assessment artemis-simulated-security-assessment Public

    Simulated/academic security assessment lifecycle (recon, scanning, vulnerability assessment, defensive risk register) against a fictional company, with executive + technical reports. No real system…

    Mermaid

  3. cybersecurity-concepts-notes cybersecurity-concepts-notes Public

    Curated personal study notes on core cybersecurity frameworks (Kill Chain, CIS Controls, OWASP, Zero Trust, Red/Blue Team) and real breach case studies (Equifax, Target, Uber). Includes GRC and pen…

  4. CYBR552_CapStone CYBR552_CapStone Public

    Design-focused security architecture for a multi-slice 5G network (video, VoIP, IoT) using containerized core functions, SDN/NFV, and Kubernetes isolation. Includes a six-threat model, QoS-as-secur…

    Mermaid

  5. secure-home-network-lab secure-home-network-lab Public

    Independent, authorized home-network hardening lab: router deployment, firmware change management, guest-network isolation validation, VMware bridged-network troubleshooting, Nmap service assessmen…