Explore the parallels between ancient Roman military strategies and modern network defense in this thought-provoking conference talk. Delve into the challenges faced by Roman emperors Diocletian and Constantine in the 4th century and discover how their solutions to protecting a vast empire with limited resources mirror contemporary cybersecurity issues. Learn about reactive defense styles, system design for survivability, and the nuanced approach to trust in network protection. Gain insights from historical lessons, including why the Battle of Thermopylae might be overemphasized in modern security thinking. Examine how ancient wisdom, such as Bedouin sayings, can be applied to current intrusion detection and defense-in-depth strategies. Enhance your understanding of cybersecurity by drawing from the rich tapestry of history and its unexpected connections to modern network defense challenges.