I explain complex systems, teach the people who operate them, and help organisations reason through consequential technology decisions.
São Paulo · Portuguese and English · work delivered globally
What I do now
Build ronutzThis site: tools that compute rather than guess, articles read from the vendors' own pages, and a record of the industry, all built in the open.
TeachOfficial instructor-led training on the four platforms, virtual and on site, in any time zone.Official courses on F5, Fortinet, Extreme Networks and Netskope. How the courses are taught →
AdviseExecutive-level technical advisory for the decisions that carry business or mission consequences.What the advisory covers →
SpeakTalks and facilitated sessions on networking, security and the craft of making complex things make sense.
Wo es begann
Vor der formalen Laufbahn stand die Neugier. In den frühen 1990er Jahren importierte und baute ich Computer zusammen, betrieb und nutzte Bulletin-Board-Systeme und arbeitete mit DOS, Unix, Linux, Netware, frühem Ethernet, X.25 und Einwahl-Internet. Bis 1995 war aus dieser praktischen Arbeit eine erste formale Rolle beim Aufbau eines Systems für den elektronischen Datenaustausch geworden. Der rote Faden von damals bis heute ist derselbe: etwas wirklich Komplexes nehmen und zum Laufen bringen, und es dann für jemand anderen verständlich machen.
Why ronutz exists
The tools I wanted while teaching did not exist in a form I could trust: calculators that compute instead of guessing, explanations that cite the vendor's own page, and a record of the industry I lived through that someone else can check. So I built them, in the open, from documentation read live, with nothing a reader types leaving the browser in the catalogue's tools; the two red room lookups that do query a registry say so before they ask, and ask only on the reader's word. The site began as the classroom's companion and grew into a workbench, a knowledge base and a record of the industry; it is free because the knowledge in it was never mine alone.
How I work
Five principles hold across the site and the teaching alike:
Can't write up an endorsement for one company, since I worked w/ him in 3 different companies.
The simple endorsement is the fact that I recommended him for two out of the three places I worked w/ him.
There are few people in the networking industry that not only understand networking technologies, but actually "feel them", Rodolfo is one of these few blessed people.
Luiz EduardoCTO, Security at HPE Aruba NetworkingLinkedIn recommendation · July 22, 2004
Meine Laufbahn begann 1996 auf der Anbieter- und Umsetzungsseite und blieb dort zwei Jahrzehnte lang, bevor ich mich voll auf Schulungen konzentrierte. Dieser Umsetzungshintergrund ist der Grund, warum die Schulung ankommt: Ich habe diese Systeme im Produktivbetrieb gebaut, kaputtgemacht und repariert.
1996 – 2000
Cabletron Systems · São PauloNetzwerkingenieur und zertifizierter Trainer. Nicht-Ethernet- und Ethernet-Netzwerke, Campus-Netzwerke, IP-Routing.
2000 – 2002
Riverstone Networks · Santa Clara, CaliforniaProduktsupport-Ingenieur und Wissensdatenbank-Koordinator in Kalifornien. Gigabit Ethernet, Metropolitan Area Networks, IP-Routing, BGP. Eskalation der dritten Ebene, Nachstellung von Kundenszenarien und Regressionstests.
2003 – 2004
Cisco Systems · BrasíliaNetzwerk-Beratungsingenieur, als zentraler Ansprechpartner für Schlüsselkunden wie SERPRO und Correios. Eskalations- und Kundenzufriedenheitsmanagement.
2004 – 2005
IronPort Systems · São PauloChannel development and pre-sales technical consulting for IronPort's C-Series e-mail security appliances: late 2004 with IronPort's own São Paulo operation, then through 2005 with a Cisco and IronPort reseller, from RFPs and installation to customer support. IronPort was acquired by Cisco in 2007.
2005 – 2007
Enterasys Networks · São PauloNetzwerkingenieur und Trainer. Unternehmensnetzwerke, IP-Routing, Benutzerzugriffssteuerung und NAC, IDS und IPS.
2009 – 2010
Juniper Networks · São PauloChannel-Support-Ingenieur und Trainer für Unternehmens-Switches und Firewalls. Technische Vertriebsbefähigung und Junos-SRX-Betriebsschulungen.
2011 – 2014
Implementation · via CYLK, TDec and direct engagementsDeploying and integrating security and network platforms for end customers, mostly under contracts held by resellers and occasionally direct. Juniper SSG, SRX, EX and Secure Access - the line that became MAG and then Pulse Secure - alongside Cisco ASA, Palo Alto Networks next-generation firewalls, and Extreme Networks Summit and BlackDiamond switches.
2015 – 2019
F5 Networks · Westcon / TD SYNNEX, Network1 / ScanSourceChannel-orientiertes Vertriebs- und Pre-Sales-Engineering für F5, mit technischer Befähigung, Proof-of-Concept-Durchführung und Partnerschulungen über die Distribution hinweg.
2020 – 2022
Pre-sales and consulting · via CYLKSolutions consulting and pre-sales through CYLK, the São Paulo security integrator, while full-time instruction with its sister company InLearn began: F5 application delivery and security, Palo Alto Networks firewalls, Fortinet, Tenable vulnerability management, CyberArk privileged access and Corvil network analytics, as proofs of concept, designs and customer training. All six hold a mark here, and each has its chapter in the career record.
2020 – heute
Full-time instruction · Red Education from 2021 (full-time September 2023)Autorisierter Schulungstrainer, der offizielle zertifizierte Kurse zu F5, Fortinet, Extreme Networks und Netskope für Organisationen weltweit liefert.Currently teaching:
Preparing to teach:
The History
Drei Epochen, ein roter Faden: etwas wirklich Komplexes nehmen, zum Laufen bringen und es dann für jemand anderen verständlich machen.
Every claim on this page has a place where it can be checked: the career chapters, the credentials with their issuing bodies and dates, the endorsements quoted verbatim, the course catalogue, the writing, the earlier sites, and how this site itself is built.
