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.
Dove tutto è cominciato
Prima della carriera formale, c'è stata la curiosità. All'inizio degli anni Novanta importavo e assemblavo computer, gestivo e usavo sistemi bulletin board, e lavoravo con DOS, Unix, Linux, Netware, le prime Ethernet, X.25 e internet via modem. Nel 1995 quel lavoro pratico era già diventato un primo impiego formale: la costruzione di un sistema di scambio elettronico di dati. Il filo conduttore da allora a oggi è lo stesso: prendere qualcosa di davvero complesso e farlo funzionare, e poi renderlo comprensibile a un'altra persona.
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
La mia carriera è iniziata sul fronte del fornitore e dell'implementazione nel 1996, ed è rimasta lì per due decenni prima che mi dedicassi interamente alla formazione. Quella base di implementazione è il motivo per cui la formazione fa presa: ho costruito, rotto e riparato questi sistemi in produzione.
1996 – 2000
Cabletron Systems · São PauloIngegnere di rete e istruttore certificato. Reti non Ethernet ed Ethernet, reti di campus, routing IP.
2000 – 2002
Riverstone Networks · Santa Clara, CaliforniaIngegnere di supporto al prodotto e coordinatore della knowledge base in California. Gigabit Ethernet, reti metropolitane, routing IP, BGP. Escalation di terzo livello, riproduzione di scenari cliente e test di regressione.
2003 – 2004
Cisco Systems · BrasíliaIngegnere consulente di rete, come punto di contatto unico per clienti chiave come SERPRO e Correios. Gestione dell'escalation e della soddisfazione del cliente.
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 PauloIngegnere di rete e istruttore. Reti aziendali, routing IP, controllo dell'accesso degli utenti e NAC, IDS e IPS.
2009 – 2010
Juniper Networks · São PauloIngegnere di supporto di canale e istruttore per switch e firewall aziendali. Abilitazione tecnica alle vendite e formazione operativa su Junos-SRX.
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 / ScanSourceIngegneria di vendita e prevendita orientata al canale per F5, con abilitazione tecnica, esecuzione di proof of concept e formazione dei partner lungo la distribuzione.
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 – oggi
Full-time instruction · Red Education from 2021 (full-time September 2023)Istruttore di formazione autorizzato che tiene corsi ufficiali e certificati su F5, Fortinet, Extreme Networks e Netskope per organizzazioni in tutto il mondo.Currently teaching:
Preparing to teach:
The History
Tre epoche, un filo conduttore: prendere qualcosa di davvero complesso, farlo funzionare, e poi renderlo comprensibile a un'altra persona.
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.
