74%
About Kefalindo
Security
is a craft,
not a
checkbox
Firewall rules that actually make sense. Taught by practitioners who've spent years managing real infrastructure — not building presentations about it.
Founded 2021 Kelowna, BC Global Students
Where the numbers sit
Honest figures from the platform as of this year — no projections, no rounding up.
87%
65%
95%
How Kefalindo
came to exist
Most security courses spend an hour on concepts before barely touching configuration. We started Kefalindo because that gap was leaving sysadmins unprepared for real-world firewall decisions — the kind that happen under pressure on a Friday afternoon.
The platform focuses exclusively on network security and firewall management. Each course is built around specific tools — pfSense, iptables, Cisco ASA, Fortinet — with lab-style instruction that mirrors what production environments actually look like.
Students don't need a specific job title to enroll. The material suits anyone maintaining infrastructure, whether that's a solo developer managing a VPS or a network engineer at a mid-sized firm.
Security-only focus No general IT or cloud clutter — every lesson maps to firewall or network defence.
Self-paced and asynchronous No fixed schedules. Students in Auckland and Oslo access the same content on their own time.
Lab-verified content Each module is tested against current software versions before publishing.
How instruction actually works here
Three principles that shape every course we publish — and the people who put it together.
01
Start with a real failure case
Every module opens with a misconfiguration scenario drawn from actual incidents — a missed egress rule, an overly permissive inbound policy, a forgotten NAT exception. The lesson teaches how to catch it and why it happened.
02
Demonstrate before explaining theory
Instructors configure first, explain second. Students see what the commands do inside a sandboxed environment before the theory is introduced. This reverses the usual course structure deliberately.
03
Verify understanding with applied tasks
Quizzes are scenario-based, not definitional. A passing mark requires solving a configuration problem, not recalling a vocabulary term. Progress reflects practical readiness, not memorisation.
RA
Raffael Aubigny Lead Instructor — Network Security
Fourteen years maintaining perimeter defences for financial sector clients. Specialises in stateful inspection and intrusion detection rule tuning.
SK
Solange Kieffer Curriculum Lead
Designed the lab environment and assessment framework. Worked in ISP operations before moving to technical education full-time.
VN
Vasyl Naumenko Instructor — Firewall Engineering
Focuses on open-source firewalls and packet filtering. Former contributor to pfSense community documentation.
BT
Brigitte Thalmann Student Experience
Handles onboarding and support across all time zones. Makes sure students stuck on a NAT rule at 2am don't have to wait until Monday for an answer.