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.
Donde empezó
Antes de la carrera formal estuvo la curiosidad. A principios de los años noventa importaba y ensamblaba ordenadores, operaba y usaba sistemas de tablón de anuncios, y trabajaba con DOS, Unix, Linux, Netware, los primeros Ethernet, X.25 e internet por línea conmutada. Para 1995 ese trabajo práctico se había convertido en un primer puesto formal: la construcción de un sistema de intercambio electrónico de datos. El hilo conductor de entonces a hoy es el mismo: tomar algo realmente complejo y hacer que funcione, y luego hacerlo comprensible para otra 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
Mi carrera comenzó en el lado del fabricante y la implementación en 1996, y se mantuvo ahí durante dos décadas antes de centrarme por completo en la formación. Esa base de implementación es la razón por la que la formación cala: he construido, roto y reparado estos sistemas en producción.
1996 – 2000
Cabletron Systems · São PauloIngeniero de redes e instructor certificado. Redes no Ethernet y Ethernet, redes de campus, enrutamiento IP.
2000 – 2002
Riverstone Networks · Santa Clara, CaliforniaIngeniero de soporte de producto y coordinador de base de conocimiento en California. Gigabit Ethernet, redes de área metropolitana, enrutamiento IP, BGP. Escalación de tercer nivel, recreación de escenarios de cliente y pruebas de regresión.
2003 – 2004
Cisco Systems · BrasíliaIngeniero consultor de redes, como punto de contacto único para clientes clave como SERPRO y Correios. Gestión de escalación y de satisfacción 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 PauloIngeniero de redes e instructor. Redes empresariales, enrutamiento IP, control de acceso de usuarios y NAC, IDS e IPS.
2009 – 2010
Juniper Networks · São PauloIngeniero de soporte de canal e instructor para switches y firewalls empresariales. Habilitación técnica de ventas y formación operativa de 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 / ScanSourceIngeniería de ventas y preventa orientada al canal para F5, con habilitación técnica, ejecución de pruebas de concepto y formación de partners a través de la distribución.
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 – actualidad
Full-time instruction · Red Education from 2021 (full-time September 2023)Instructor de formación autorizado que imparte cursos oficiales y certificados sobre F5, Fortinet, Extreme Networks y Netskope a organizaciones de todo el mundo.Currently teaching:
Preparing to teach:
The History
Tres épocas, un hilo conductor: tomar algo realmente complejo, hacer que funcione, y luego hacerlo comprensible para otra 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.
La sección Aprender explica las ideas detrás de las herramientas, y las herramientas te permiten trabajar con ellas directamente, todo en tu navegador.
