Jean-François Dal https://www.employees.org/~jdal/ Recent content on Jean-François Dal Hugo -- gohugo.io en © 2026 Jean-François Dal Tue, 26 May 2026 00:00:00 +0000 Dedicated PSN for Wired Guest — It's Possible! https://www.employees.org/~jdal/tech/ise/wired-guest-dedicated-psn/ Tue, 26 May 2026 00:00:00 +0000 https://www.employees.org/~jdal/tech/ise/wired-guest-dedicated-psn/ How to segment wired guest traffic to dedicated PSNs using IBNSv2 session roles and authorization profiles—a technique running in production for years that most engineers have never seen. Quantum-Safe Cryptography: A Practitioner's Starting Point https://www.employees.org/~jdal/tech/pqc/pqc-intro/ Sun, 24 May 2026 00:00:00 +0000 https://www.employees.org/~jdal/tech/pqc/pqc-intro/ An introduction to the PQC section — why the quantum threat is real, the difference between QKD and PQC, and a curated reading list to get you up to speed. About https://www.employees.org/~jdal/about/ Fri, 22 May 2026 00:00:00 +0000 https://www.employees.org/~jdal/about/ <h2 class="relative group">Bonjour, je m&rsquo;appelle Jean-François aka J-F aka Jeff <div id="bonjour-je-mappelle-jean-françois-aka-j-f-aka-jeff" class="anchor"></div> <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100 select-none"> <a class="text-primary-300 dark:text-neutral-700 !no-underline" href="#bonjour-je-mappelle-jean-fran%c3%a7ois-aka-j-f-aka-jeff" aria-label="Anchor">#</a> </span> </h2> <p>I&rsquo;ve started my career at Cisco around Y2K, so many years later, I&rsquo;m still around, hooked on the CLI, different times though, Claude Code has replaced the PIX or the IOS, but still the same curiosity to figure out how things work&hellip;</p> <p>My career has been built around three things I genuinely love doing: solving technical problems, sharing what I&rsquo;ve learned, and helping customers navigate complexity without losing their minds in the process. Not because it looks good on a review — because that&rsquo;s where I feel the most useful.</p> AI and Security: The Wild West Nobody Warned You About https://www.employees.org/~jdal/tech/ai/ai-defense-intro/ Fri, 22 May 2026 00:00:00 +0000 https://www.employees.org/~jdal/tech/ai/ai-defense-intro/ From Circuit to agentic AI, Pickle Deserialization to Shadow AI, Cisco AI Defense to Project Glasswing — a personal tour of the AI security landscape. Cisco ISE: Where We Came From and Where We're Going https://www.employees.org/~jdal/tech/ise/ise-intro/ Fri, 22 May 2026 00:00:00 +0000 https://www.employees.org/~jdal/tech/ise/ise-intro/ A practitioner&rsquo;s introduction to the ISE section — not a beginner&rsquo;s guide, but a starting point for engineers who already know the product and want the edge cases, the underdocumented behaviours, and the things you only learn at 2am. Even an engineer needs some softness... https://www.employees.org/~jdal/soft/personal-branding-intro/ Fri, 22 May 2026 00:00:00 +0000 https://www.employees.org/~jdal/soft/personal-branding-intro/ An introduction to the soft skills section — personal development, the StandOut assessment, and why even engineers need to think about this stuff.