Network Part 1 - The OSI Model as a Fault Map

Published: March 27, 2026 In a previous post, we watched a single DNS misconfiguration on one AWS server bring 3,500 companies across 60 countries to a standstill. DNS lives at Layer 7. The failure started there. This kind of thing repeats. On June 21, 2022, a misconfigured BGP route at Cloudflare b