Physical Isolation + Logical Segmentation + High Availability + Reputation Services

Physical isolation

is the idea of separating devices so that there is no connection between them. This is commonly known as an air-gapped design because there is “air” between them instead of a network cable or network connection

Logical segmentation

is done using software or settings rather than a physical separation using different devices. Virtual local area networks (VLANs) are a common method of providing ____

High availability

is the ability of a service, system, network, or other element of infrastructure to be consistently available without downtime

Reputation services

describes services and data feeds that track IP addresses, domains, and hosts that engage in malicious activity