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MReyna22/README.md

Hi, I'm Misael Reyna

Cybersecurity Graduate Student · Military Veteran · Hands-On IT & Security Builder

LinkedIn Location Focus

I am a cybersecurity graduate student at Northern Illinois University with a Bachelor of Science in Criminology from DePaul University and prior service in both the United States Marine Corps and United States Army infantry.

My portfolio focuses on practical problem-solving: recovering failed systems, building and securing lab infrastructure, administering Linux and Windows environments, analyzing risk, validating controls, and documenting the entire process—including the mistakes and unresolved findings.

I do not present home labs or academic exercises as professional production experience. Each repository clearly identifies its scope, evidence, limitations, and current status.


Featured Projects

R36S Lite-Cyberdeck · Working Prototype

Recovered a non-booting R36S handheld and transformed it into a dual-purpose ARM Linux terminal and lightweight cybersecurity lab while preserving its gaming functionality.

Demonstrates: removable-media recovery, Linux filesystem analysis, ARM64 administration, Bash, Secure Shell (SSH), USB Wi-Fi investigation, Nmap, privilege review, service troubleshooting, evidence handling, and technical documentation.

Built a Windows Server 2025 domain in Oracle VirtualBox with Active Directory Domain Services (AD DS), Domain Name System (DNS), Dynamic Host Configuration Protocol (DHCP), Routing and Remote Access Service (RAS)/Network Address Translation (NAT), a domain-joined Windows 10 client, Group Policy, and PowerShell user provisioning.

Demonstrates: identity and access management, Windows administration, network services, virtualization, Group Policy, PowerShell automation, secure credential handling, troubleshooting, and screenshot-backed documentation.

Secure Home Network Hardening Lab · Complete for This Phase

Hardened and validated a personally owned NETGEAR Nighthawk XR1000 v1 running DumaOS, staged behind an existing Internet Service Provider (ISP) gateway and tested with a Windows management workstation plus a bridged Kali Linux virtual machine in VMware Workstation.

The work included vendor-site firmware verification and manual remediation, guest-network isolation testing, disabling Universal Plug and Play (UPnP), port triggering, Digital Living Network Alliance (DLNA), and ReadySHARE services, authorized Nmap validation, Windows Firewall drop-log correlation, endpoint service reduction, and honest documentation of remaining DumaOS limitations.

Demonstrates: consumer-router hardening, change management, control validation, VMware Network Address Translation (NAT)-to-bridged migration, Nmap, Windows Firewall analysis, endpoint service review, and residual-risk documentation.

Simulated Security Assessment · Complete Academic Portfolio

Created a four-phase assessment and reporting portfolio for a fictional organization, covering reconnaissance methodology, scan planning, vulnerability assessment, defensive risk analysis, and separate executive and technical reports.

Demonstrates: assessment scoping, Open-Source Intelligence (OSINT) methodology, vulnerability triage, risk reasoning, defensive detection thinking, ethical judgment, sanitization, and audience-specific reporting.

Secure Containerized 5G Network Slices · Complete Design Capstone

Designed a multi-slice 5G security architecture for video, Voice over Internet Protocol (VoIP), and Internet of Things (IoT) services using a containerized 5G core, Kubernetes isolation, Software-Defined Networking (SDN), Network Functions Virtualization (NFV), and a six-threat defense model.

Demonstrates: 5G architecture, network slicing, Kubernetes security concepts, Role-Based Access Control (RBAC), network policies, threat modeling, Quality of Service (QoS) security analysis, and architecture documentation.

A defensive study repository covering frameworks, breach case studies, ethics, legal scope, governance, and security fundamentals.

Demonstrates: Cyber Kill Chain, Center for Internet Security (CIS) Controls, Open Worldwide Application Security Project (OWASP) Top 10, Zero Trust, breach root-cause analysis, Governance, Risk, and Compliance (GRC) thinking, sourcing, and technical writing.


Portfolio at a Glance

Project Environment Primary focus Evidence
R36S Lite-Cyberdeck ARM64 Linux / embedded hardware Recovery, administration, scripting, networking 30 sanitized screenshots, evidence catalog, troubleshooting log
Active Directory Home Lab Windows Server 2025 / Windows 10 / VirtualBox Identity, DNS, DHCP, NAT, Group Policy, PowerShell Reproducible seven-section guide and live-lab screenshots
Secure Home Network NETGEAR XR1000/DumaOS · Windows · Kali · VMware Consumer-router hardening and control validation Firmware change record, guest-isolation tests, scans, firewall correlation, residual-risk log
Simulated Security Assessment Fictional academic environment Assessment lifecycle and reporting Risk register, executive report, technical report, methodology
5G Security Capstone Design-focused 5G / Kubernetes / SDN Architecture and threat modeling Original diagram, threat-defense mapping, reference manifests
Cybersecurity Notes Research and coursework synthesis Frameworks, incidents, ethics, and GRC Cited analyses and clearly labeled personal interpretations

Technical Skills Demonstrated in My Repositories

Domain Technologies and capabilities
Operating systems Windows Server 2025, Windows 10/11, Kali Linux, Debian-based Linux, ARM64 Linux
Identity and Windows infrastructure Active Directory Domain Services, Organizational Units, security groups, Group Policy, DNS, DHCP, RAS/NAT, PowerShell
Networking TCP/IP, subnetting, routing, NAT, wireless isolation, Nmap, NetworkManager, firewall validation, SDN/NFV concepts
Linux and embedded systems Bash, SSH/SFTP, services, permissions, storage recovery, EXT4/FAT analysis, package and kernel-module investigation
Security analysis Vulnerability assessment methodology, threat modeling, risk registers, security frameworks, control mapping, residual-risk documentation
Cloud-native and emerging networks Kubernetes namespaces, RBAC, network policies, resource quotas, containerized 5G core and network slicing concepts
Virtualization and recovery Oracle VirtualBox, VMware Workstation, virtual networking, USB passthrough troubleshooting, disk imaging, TestDisk, bootable media
Professional documentation Executive summaries, technical reports, reproducible lab guides, evidence catalogs, troubleshooting logs, architecture diagrams

How I Work

  • Verify controls instead of trusting configuration screens. I test whether isolation, addressing, authentication, and firewall behavior work end to end.
  • Document failures as well as successes. Permission errors, broken sessions, tool limitations, and incorrect assumptions are part of the engineering record.
  • Separate facts from hypotheses. My repositories identify what the evidence proves, what remains an interpretation, and what was not tested.
  • Treat security and ethics as design requirements. Scope statements, sanitization, authorization boundaries, and credential handling are documented explicitly.
  • Communicate for the audience. I write both technical implementation detail and recruiter/leadership-level summaries.

Education & Background

  • Master's Degree in Cybersecurity — In Progress, Northern Illinois University
  • Cybersecurity Bootcamp, Springboard & Northern Illinois University, June 2025
  • Bachelor of Science in Criminology, DePaul University, June 2025
  • Associate Degree in Applied Social Science, Criminal Justice, College of DuPage, May 2024
  • United States Marine Corps veteran
  • United States Army infantry veteran
  • Assistant Regional Director of Expansion, Sigma Lambda Beta Intl. Fraternity Inc.
  • Dean's Award for Scholastic Excellence
  • Former Vice President, Alpha Phi Sigma Criminology Honor Society

Current Direction

I am continuing to build practical depth in security operations, network defense, identity and access management, incident response, Linux/Windows administration, vulnerability management, automation, and enterprise infrastructure security.

I am interested in entry-level and early-career opportunities involving cybersecurity analysis, Security Operations Center (SOC) work, network security, systems administration, infrastructure security, and Information Technology support.


Additional Learning Repositories

  • gophish — a copy of the external open-source Gophish project; not presented as my original work.
  • mcp-for-beginners — an external Model Context Protocol learning curriculum; not presented as my original authorship.

Connect With Me

LinkedIn · Chicago, Illinois

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…