"Welcome to my house! Enter freely. Go safely, and leave something of the happiness you bring...

...We are in Transylvania, and Transylvania is not England. Our ways are not your ways, and there shall be to you many strange things... Loneliness will sit over our roofs with brooding wings... It is a strange world, a sad world, a world full of miseries, and woes, and troubles...

...Enter freely and of your own free will..."

• This repository has been intended to be a personal, centralized knowledge base containing material I have created and actively use in my day to day work as an engineer. It includes code, scripts, configurations, labs, write ups, tools, resources, and technical documentation.

• It also serves as a professional portfolio to showcase my experience, skills, and background in areas such as IT, Networking, Telecommunications, Software Development, Cybersecurity, and other fields related to Computer Science and Information & Communication Technologies.

• Some content in this repository involves advanced configurations, scripts, low level system access, security techniques, or tooling that may impact system stability, data integrity, or regulatory compliance if applied incorrectly. All materials are provided for educational and professional reference only. Usage assumes a solid technical understanding of the underlying technologies.

• All experimentation, including configuration, execution, deployment, or security engagements, must be performed exclusively in controlled laboratory environments, whether physical or virtual. Any activity carried out on production systems, networks, or infrastructures must be explicitly authorized by the responsible administrator or owner.

• Users are responsible for ensuring compliance with all applicable laws, regulations, and policies related to information technology, telecommunications, data protection, and security within their respective jurisdictions.

• This repository is publicly available in the spirit of free and open knowledge, aligned with GNU and free software principles and philosophy, including the freedom to study, modify, and share its contents.

• The author assumes no responsibility for any misuse, damage, or legal consequences resulting from the use of the information provided in this repository.

"The only good is knowledge, and the only evil is ignorance." Herodotus

I’m a very lucky guy who grew up surrounded by IBM computers back in the 80s. Thanks to my father, who was a COBOL and BASIC programmer, I had access to computers, floppy disks, DOS, and early versions of Windows long before technology became my profession.

Today, I’m a Network Engineer with hands-on experience across enterprise-grade and service provider environments. I’ve worked in Level 3 NOC operations, senior engineering roles, network design, wireless infrastructure, technology delivery, information security, and incident response, supporting a wide range of network environments including branch offices, large enterprise campuses, high-density venues, high-availability data centers and cloud networks.

Beyond networking, my background spans cybersecurity, ethical hacking, software development, data analysis, and systems engineering. I began my career as a programmer and progressively expanded into scripting, automation, backend development, and database design and administration, which ultimately led me into the network infrastructure world.

My core focus is on Ethernet (IEEE 802.3) and Wireless (IEEE 802.11) infrastructure, covering deep troubleshooting, network analytics, performance optimization, configuration, monitoring, security, and end-to-end network architecture and design with a strong network-centric approach to cybersecurity, including traffic analysis, segmentation, firewalling, threat detection, and incident response support.

I’ve delivered and supported scalable network solutions across a wide range of industries and environments, including globally distributed enterprise environments, data centers, hospitality, retail, healthcare, education, government, entertainment, international airports, and transportation.

Please check out the links of my Social Networks, where you will find more information regarding my professional career. Greetings and thank you for reading! 💀🎩

• Bachelor of Science in Computer Systems Engineering

• CCNA CCNP CWNA CWAP CWSP RICXI RSP
• Wireless Specialist & Network Security

• Python Javascript VBA Bash Batch PowerShell C++ HTML5 CSS3 SQL MySQL Mongo DB

• Security+ PenTest+ Ofensive Pentesting Cisco Cyber-Security Red Team Ethical Hacking Defensive Security Blue Team Digital Forensics

• Microsoft Windows Windows Server & Active Directory Linux Unix MacOS

ΟΠΟΙΟΣ ΜΠΑΙΝΕΙ ΕΔΩ ΝΑ ΠΑΡΑΤΑ ΚΑΘΕ ΕΛΠΙΔΑ

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- Hecho en México - by Fz3r0 💀

In the mist of the night you may see me come, where shadows move and demons lie...

...I am Fz3r0 and the Sun no longer rises..."