October 2020
Intermediate to advanced
481 pages
17h 35m
English
Content preview from Network Security, Firewalls, and VPNs, 3rd Edition
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What Are Zones of Risk?
A zone of risk is any segment, subnet, network, or collection of networks that represents a certain level of risk. The higher the risk, the more security you need to protect against that risk. The less risk associated with a zone, the less security is necessary because the threats to that zone pose less chance of harm.
The flip side of zones of risk is zones of trust. Highly trusted zones naturally require less security, while zones of low trust require more security.
Each zone of risk needs to be clearly and distinctly isolated from any other risk zone, especially if those zones have different levels of risk. The primary tool used to isolate zones is a firewall.
Most networks have two to four zones of risk. These include ...
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