This course introduced tools and techniques used to secure and analyze large computer networks and systems. Through the completion of lab assignments, I learned some C programming, which forms a foundation for many cybersecurity operations, such as malware analysis, understanding network protocol stack, etc. Additionally, I learned new techniques like how to explore and map networks using a variety of diagnostic software tools, use advanced packet analysis, configure firewalls, write intrusion detection rules, perform forensic investigation, and practice techniques for penetration testing.