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networking is the core foundation of ethical hacking, essential for identifying and exploiting security weaknesses. It details how knowledge of networking concepts, such as IP and MAC addressing, protocols like TCP and UDP, and the OSI model, is crucial for understanding how systems communicate and where vulnerabilities exist. The text also mentions various network devices and concepts like NAT, along with specialized tools and techniques such as Nmap and packet sniffing, that ethical hackers use for reconnaissance and vulnerability assessments. Finally, the source cautions that YouTube restricts the sharing of advanced, unfiltered content regarding real-world exploits and payloads, directing viewers elsewhere for more in-depth material.