Episode 55: Network Architecture: LAN, WAN, Internet

Understanding how networks are built and connected is foundational for any security professional. In this episode, we review core network architecture concepts, including the structure and purpose of Local Area Networks (LANs), Wide Area Networks (WANs), and the global Internet. We examine how data moves across these networks and where vulnerabilities may appear, from physical access points to routing protocols. You’ll also learn about segmentation, perimeter controls, and traffic flow management. A solid grasp of network architecture is necessary for applying controls and preventing unauthorized access.