The Seven Domains of a Typical IT Infrastructure
What role do the three tenets of systems security play in a typical IT infrastructure? First, let’s review what a typical IT infrastructure looks like. Whether in a small business, large government body, or publicly traded corporation, most IT infrastructures consist of the seven domains shown in FIGURE 1-9: User, Workstation, LAN, LAN-to-WAN, WAN, Remote Access, and System/Application Domains.
Each domain requires proper security controls, which must meet the requirements of the C-I-A triad. Following is an overview of the seven domains ...
