Comprendre les ACL étendues Cisco avec un vrai cas RGPD

🎯 READY TO GET YOUR IT CERTIFICATION? Book your free discovery call with a Formip advisor, a true IT pro, not a salesperson. We'll review your certification training project (CompTIA A+ or Cisco CCNA) together, define the right path for you, and discuss financing. 👉 https://www.formip.com/pages/reservat... ━━━━━━━━━━━━━━━━━━━━━━━ 🗺️ NOT READY YET? START HERE 📍 The IT Certification Map (free guide) Which certification to take, in what order, and why. The complete overview to help you see things clearly. 👉 https://www.formip.com/products/digit... 📩 The IT Signal (free newsletter, every Monday) I cut through the noise and summarize what matters when it comes to IT certifications and careers. 👉 https://formip.substack.com/?utm_sour... ━━━━━━━━━━━━━━━━━━━━━━━ 🔥 🎯 Free Training: The Method to Earn Your IT Certification and Boost Your Career 👇 👉 https://www.formip.com/pages/webinair... ━━━━━━━━━━━━━━━ 📡 Stay up-to-date, never become obsolete in IT. Get Formip's weekly IT update (free) 👇 👉 https://formip.substack.com/subscribe... ━ 🎥 Free Webinar — How to Pass Your CCNA on Your First Try (20 min): 👉 https://www.formip.com/pages/Boost-it... ——————————————————— You know how to configure VLANs, but without ACLs, your network is only superficially segmented. In this video, you'll understand how a Cisco Extended ACL blocks unauthorized access between two VLANs — using a real-world GDPR scenario in a medical laboratory. 📌 In this video: Romain, a network administrator in a medical testing lab, discovers that a workstation in the reception area has accessed the patient results server. Three VLANs, no filtering. Through this real-world scenario, we see step by step how to write an extended ACL numbered 100-199, choose the correct TCP ports, use the wildcard mask and the host keyword, apply the list to the correct inbound subinterface, and verify everything with show access-lists. CCNA applied to a Cisco router, without abstract theory. ⏱️ Chapters: 0:00 — The incident in the router logs 0:43 — The Guérin lab and its VLANs 1:40 — Why VLANs aren't enough 2:38 — Diagnosis with show ip route 3:42 — Standard ACL vs. Extended ACL 4:48 — Configuring ACL 110 step by step 5:42 — The wildcard mask and the host keyword 7:01 — Implicit deny ip any any 7:31 — Enforcing with ip access-group in 8:21 — ACLs for accounting and the lab 8:58 — Verifying with show access-lists 10:03 — The principle of least privilege 10:50 — Conclusion and action items 💬 And you, on your Packet Tracer labs, do you use standard or extended ACLs? Let me know in the comments. ━━━━━━━━━━━━━━━━━━━━━━ #CCNA #Formip #ACL #Cisco #VLAN #NetworkSecurity