How I teach
An instructor who built these systems before teaching them.
Most technical training is delivered by people who learned the material to teach it. This is the opposite: three decades of building, breaking, and fixing real networks and security systems, distilled into training that connects every concept to how it actually behaves in production.
Your instructor
Rodolfo Nützmann
I teach these courses as a senior technical instructor, delivering authorized F5, Fortinet, Extreme Networks, and Netskope training worldwide, built on a networking and security career that began in 1996 on the implementation side. The credentials, and what past students say, are a click away.
Before you read further
I work full time for Red Education. All the technical education work described on this page - training delivery and content development, workshops, bootcamps, knowledge transfers and enablement sessions - is delivered solely through Red Education. I will be happy to help you work out what your organisation needs and put you in touch with the right person to handle the request.
What I do
I deliver official, certified instructor-led training across security and networking platforms. There are hands-on labs on real systems, and for people who already know the fundamentals and came to practice, that is exactly the point: real environments to work in. For groups newer to a technology, the time goes first into building the foundations the topic rests on, so the hands-on work makes sense and people leave understanding why things behave the way they do, not just which buttons to press. Both are equally valuable, and the balance shifts with who is in the room. Teaching and technical enablement have been part of my work since the late 1990s, on a career that began on the implementation side in 1996.
Why this matters in a classroom
There is a difference between explaining how a feature is supposed to work and explaining why it behaves the way it does at three in the morning when something critical is down. The first comes from a manual. The second comes from having been there. Since 1996, the work was implementation: designing networks and standing them up, then troubleshooting them under pressure and being the person called to resolve the critical availability and security incidents that halt a business, for vendors and for some of the largest organizations in Brazil. That depth is what every student receives, not a presenter reading slides, but an engineer who has lived inside these systems explaining how they truly work.
What I teach
Official, certified instructor-led training across the platforms at the center of modern networking and security. Each links to its full course catalog.
- F5Application delivery and application security, on BIG-IP.
- Extreme NetworksCampus switching, SD-WAN, and cloud-driven network operations.
- FortinetNetwork security on FortiGate and the Fortinet Security Fabric.
- NetskopeCloud security and SASE on the Netskope One platform.
This catalog is representative, not exhaustive. Course names, durations, and content reflect current public information and are refined from official datasheets.
Remote training environments
Live online classes (vILT) run on Zoom by preference, with Google Meet and Microsoft Teams equally supported when a customer's platform policy calls for it.
Hands-on labs are delivered through Red Education's lab infrastructure, and through platforms such as CloudShare, Skytap, ReadyTech Axis, and Amazon WorkSpaces - whichever the official lab environment for each course is.
Complex made clear
Deep technical knowledge is necessary but not sufficient. The rarer skill is translating it: taking something genuinely complex, web application firewalls, identity federation, traffic management, SD-WAN, and making it click for someone encountering it for the first time. Students consistently single out the real-world examples and the clear, structured didactics, the ability to put each concept in the context of the work they actually do. Teaching has been a thread through this entire career, present in nearly every role since 1997, and the full-time focus since 2020.
Hands-on, not hand-wavy
Technical skill is built by doing, so every course has hands-on labs on real systems, backed by managed lab environments where practice always has somewhere real to happen. For people who already know the fundamentals and came to get their hands on the technology, that is exactly what they are here for, and it is time well spent. For those newer to it, the time goes first into the foundations the labs rest on, so the hands-on work makes sense rather than being followed by rote. Both are equally valuable, and the balance simply shifts with the room. The format adapts to the audience: virtual instructor-led training delivered globally, in-person when that serves better, in English or Portuguese. Either way, people should leave with something real and useful in hand and a real understanding of why it works.
Recognized, certified, and current
F5 DevCentral MVP for three consecutive years, in 2022, 2023, and 2024. F5 certifications held since 2015, and instructor authorization across F5, Extreme Networks, Fortinet and Netskope. Delivery is truly global, reaching Asia-Pacific including Australia, New Zealand, Singapore, the Philippines, India and Bangladesh, Europe including the United Kingdom, the Netherlands, Belgium, Germany, Poland, Switzerland and Norway, the Middle East and Africa including the United Arab Emirates and Ghana, Latin America including Brazil, Mexico and Colombia, and North America including Canada and the United States, through Red Education, a premier global authorized training center for the main cybersecurity and enterprise networking vendors.
Where to go next
The course catalogue, the certifications these courses prepare for, and the free material you can read before deciding anything.
The course catalogue ↑
The four platforms I am authorized to teach, and the courses under each. Start here if you already know what you need.
Certification guides →
What each exam actually tests, and what to study for it. Free, and useful whether or not you book a course.
Learn →
Hundreds of technical articles written by the same instructor, on the protocols and products the courses cover.
Tools →
Free calculators and explainers for the same platforms the courses cover. They compute in your browser and send nothing anywhere.
Glossary →
Every term used across the courses and the writing, defined once and cross-referenced. Useful mid-course and useful afterwards.
About →
The path from 1996 to now: the vendors, the roles, and how the teaching started.
Credentials →
Every current certification and instructor authorization, with issuing vendor and status.
Endorsements →
What students and colleagues have said, in their own words.
Three decades, one through-line
From building computers as a teenager in 1991, through two decades inside the networking and security industry, to full-time global instruction since 2020. The whole story is worth reading if you want to understand the experience behind the teaching.
Let's work together
Whether you are looking to book official training, build a custom program for your team, or bring in experienced counsel on a hard problem, the door is open.
Training delivery is handled by the leading global training center Red Education