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.
Waar het begon
Vóór de formele loopbaan was er de nieuwsgierigheid. In de vroege jaren negentig importeerde en assembleerde ik computers, draaide en gebruikte ik bulletin board-systemen, en werkte ik met DOS, Unix, Linux, Netware, vroeg Ethernet, X.25 en inbelinternet. Tegen 1995 was dat praktische werk een eerste formele rol geworden: het bouwen van een systeem voor elektronische gegevensuitwisseling. De rode draad van toen tot nu is dezelfde: iets werkelijk complex nemen en het laten werken, en het daarna begrijpelijk maken voor iemand anders.
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
Mijn loopbaan begon in 1996 aan de leveranciers- en implementatiekant, en bleef daar twee decennia voordat ik me volledig op training richtte. Die implementatieachtergrond is de reden dat de training aankomt: ik heb deze systemen in productie gebouwd, kapotgemaakt en gerepareerd.
1996 – 2000
Cabletron Systems · São PauloNetwerkengineer en geautoriseerde trainer. Niet-Ethernet- en Ethernet-netwerken, campusnetwerken, IP-routing.
2000 – 2002
Riverstone Networks · Santa Clara, CaliforniaProductondersteuningsengineer en kennisbankcoördinator in Californië. Gigabit Ethernet, metropolitan area networks, IP-routing, BGP. Escalatie van het derde niveau, het naspelen van klantscenario's en regressietests.
2003 – 2004
Cisco Systems · BrasíliaNetwerkadviesengineer, als centraal aanspreekpunt voor belangrijke klanten waaronder SERPRO en Correios. Escalatie- en klanttevredenheidsbeheer.
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 PauloNetwerkengineer en trainer. Bedrijfsnetwerken, IP-routing, gebruikerstoegangscontrole en NAC, IDS en IPS.
2009 – 2010
Juniper Networks · São PauloChannel-ondersteuningsengineer en trainer voor enterprise-switches en -firewalls. Technische sales-enablement en Junos-SRX-operationele training.
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-gerichte sales- en pre-sales-engineering voor F5, met technische enablement, uitvoering van proof-of-concepts en partnertraining door de distributie heen.
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 – heden
Full-time instruction · Red Education from 2021 (full-time September 2023)Geautoriseerde trainer die officiële gecertificeerde cursussen geeft over F5, Fortinet, Extreme Networks en Netskope aan organisaties wereldwijd.Currently teaching:
Preparing to teach:
The History
Drie tijdperken, één rode draad: iets werkelijk complex nemen, het laten werken, en het daarna begrijpelijk maken voor iemand anders.
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.
