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.
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
Cabletron Systems · São Paulo网络工程师兼认证讲师。非以太网与以太网网络、园区网络、IP 路由。
2000 – 2002
Riverstone Networks · Santa Clara, California在加州担任产品支持工程师兼知识库协调员。千兆以太网、城域网、IP 路由、BGP。第三级升级、客户场景复现与回归测试。
2003 – 2004
Cisco Systems · Brasília顾问网络工程师，SERPRO 和 Correios 等重点客户的单一联系人。负责升级管理与客户满意度。
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 Paulo网络工程师兼讲师。企业网络、IP 路由、用户访问控制与 NAC、IDS 与 IPS。
2009 – 2010
Juniper Networks · São Paulo面向企业交换机和防火墙的渠道支持工程师兼讲师。Junos-SRX 的技术销售支持与运维培训。
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.
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 – 至今
Full-time instruction · Red Education from 2021 (full-time September 2023)授权培训讲师，面向全球各组织提供 F5、Fortinet、Extreme Networks 和 Netskope 的官方认证课程。Currently teaching:
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.
