Tai Lin Wang
More than 2300 students!
We help IT professionals and businesses strengthen their digital security through practical and accessible courses. Our mission is to empower more people to protect their systems, advance their careers, and build a safer digital world.
Our Journey So Far
Every number represents someone who decided to grow, learn, and trust in this journey, Here’s what we’ve built so far.
People who have already improved their IT and cybersecurity skills with my courses.
Thanks for everyone who trusted and rated the content.
Learning that goes beyond borders.
Free courses
Start learning today — For free!
Explore hands-on, beginner-friendly courses designed to help you build practical skills in networking, cybersecurity, and IT infrastructure
Complete Firewall Course with IPTABLES, StrongSwan & FortiGate [ES]
earn how to configure Linux-based firewalls and build secure VPN tunnels using StrongSwan on Ubuntu 20.04 and FortiGate with IPsec VPN (IKEv1, PSK, XAuth).
🛠️ Tools: IPTABLES, StrongSwan, FortiGate
Log In to macOS with Google Credentials via LDAPS + Python Scripts [EN]
Step-by-step guide to enable LDAP login for macOS using Google Workspace credentials — includes automated deployment with Python 3.
🛠️ Tools: LDAPS, Google Workspace, macOS, Python 3
ARP Spoofing & MITM Attack Using GNS3 and Kali Linux [ES]
Understand and simulate ARP poisoning and man-in-the-middle attacks in a safe, virtual environment using GNS3 and Kali Linux.
🛠️ Tools: GNS3, Kali Linux, Ettercap, Wireshark
What Would You Like to Learn Today?
Explore our wide range of courses designed to help you grow your skills in network security, digital certificates, firewall management, and more. Whether you’re a beginner or an expert, there’s something here for everyone!
Digital Certificates Fundamentals [ES]
Understand the essentials of cryptography and digital certificates, secure digital environments, and learn how to:
Master OpenSSL and create test Certificate Authorities
Generate CSRs, validate, and obtain trusted digital certificates
Implement digital certificate security for secure communications
Master Firewall Security: Unlock the Power of IPTABLES [ES]
Learn the essentials of IPTables and its role in network security for Linux environments, including:
- Master the syntax and structure of IPTables to create efficient filtering and redirection rules
- Configure IPTables to protect networks and servers from external threats like DDoS attacks
- Gain hands-on experience in managing whitelists, blacklists, and implementing security policies