Explore the fundamentals of Intrusion Detection Systems in this 37-minute video lecture. Learn about attack patterns, Snort rules, and practical examples for detecting various security threats. Dive into topics such as FTP rules, login alerts, log ID alerts, Telnet alerts, file type detection, ICMP detection, and port scanning detection. Gain hands-on experience by practicing with Snort rules and understanding how to implement effective security measures for your network.