Secure Network Architecture and Components

This chapter discusses the open systems interconnection model as a guiding principle in networking, cabling, wireless connectivity, transmission control protocol/internet protocol (TCP/IP) and related protocols, networking devices, and firewalls. Communications between computers over networks are made possible by protocols. The Network layer is responsible for logical addressing and performing routing. Simple Network Management Protocol is a standard network‐management protocol supported by most network devices and TCP/IP‐compliant hosts. Endpoint detection and response is a security mechanism that is an evolution of traditional antimalware products, and firewall solutions. Wireless communications occur in many forms, including cell phone, Bluetooth, radio frequency identification, near‐field communication, and networking. Wireless communication is more vulnerable to interference, eavesdropping, denial of service, and on‐path attacks. Routers, hubs, switches, repeaters, gateways, proxies, network access control, and firewalls are an important part of a network security.