Local Network Security
Charles J. Brooks, Christopher Grow, Philip Craig, Donald Short · Cybersecurity · 2018
The most widely discussed hierarchical networking initiative is the open systems interconnection (OSI) model put forward by the International Standards Organization. Every networking course examines the OSI model in terms of what types of devices, protocols, and functions exist at each level. However, different cybersecurity challenges may be present at each level. Network topologies are Layer 1—physical or logical—connection strategies that fall into four basic types of configurations: star, bus, ring, and mesh. In order for devices to communicate with each other on the network, they must all use the same network protocol. The most basic address in networking operations is the Media Access Control (MAC) address that serves as a unique identifier for every device attached to a network. Two common types of attacks typically are aimed at the MAC layer of a network: MAC spoofing and MAC broadcast flooding.