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DanielOnDefense

Building secure systems. Solving real-world problems.

I’m Daniel Miller, a cybersecurity graduate and CompTIA Network+ certified IT specialist. I build security-focused projects, manage a hands-on homelab, and solve problems involving Windows, Linux, networking, hardware, and virtualization.

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Daniel Miller, cybersecurity graduate and IT specialist
Education B.S. in Cybersecurity
Certification CompTIA Network+
Hands-on Practice Homelab Infrastructure
Technical Focus Secure, Reliable Systems

Projects built to turn knowledge into experience.

These projects document how I learn: build the environment, test it, troubleshoot it, and explain what the work demonstrates.

Ongoing Lab

Homelab Infrastructure

An enterprise-style learning environment built around virtualization, Windows and Linux systems, network services, storage, monitoring, and security experimentation.

  • Proxmox
  • Windows
  • Linux
  • Networking
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Public GitHub Project

Python Cybersecurity Toolkit

A cross-platform collection of educational security tools, including multithreaded host discovery, password generation and evaluation, and password-hashing demonstrations.

  • Python
  • Networking
  • Threading
  • Cryptography
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Active Project

Pentesting Methodology Vault

A reusable Obsidian workflow for CTFs and authorized penetration tests, combining repeatable checklists, tool references, organized findings, and Bash-powered box setup.

  • Obsidian
  • Bash
  • Nmap
  • Methodology
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Security thinking backed by practical IT experience.

My cybersecurity education shapes how I approach everyday technical problems. Performance, reliability, and security are connected, so I look beyond the immediate symptom to understand the system behind it.

I use the same process whether I am troubleshooting a Windows computer, configuring a server, or working through a security lab: identify the problem, test assumptions, document the evidence, and explain the solution clearly.

More about my background

Systems

Windows, Linux, troubleshooting, and endpoint configuration

Infrastructure

Networking, virtualization, servers, storage, and services

Security

System hardening, monitoring, threat awareness, and testing

Automation

Python and Bash tools that make technical work repeatable

Practical help when your technology needs attention.

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Have an opportunity, project, or technical problem?

I’m always interested in discussing cybersecurity, IT, homelab projects, and practical ways to improve a system.