Book Image

Zscaler Cloud Security Essentials

By : Ravi Devarasetty
Book Image

Zscaler Cloud Security Essentials

By: Ravi Devarasetty

Overview of this book

Many organizations are moving away from on-premises solutions to simplify administration and reduce expensive hardware upgrades. This book uses real-world examples of deployments to help you explore Zscaler, an information security platform that offers cloud-based security for both web traffic and private enterprise applications. You'll start by understanding how Zscaler was born in the cloud, how it evolved into a mature product, and how it continues to do so with the addition of sophisticated features that are necessary to stay ahead in today's corporate environment. The book then covers Zscaler Internet Access and Zscaler Private Access architectures in detail, before moving on to show you how to map future security requirements to ZIA features and transition your business applications to ZPA. As you make progress, you'll get to grips with all the essential features needed to architect a customized security solution and support it. Finally, you'll find out how to troubleshoot the newly implemented ZIA and ZPA solutions and make them work efficiently for your enterprise. By the end of this Zscaler book, you'll have developed the skills to design, deploy, implement, and support a customized Zscaler security solution.
Table of Contents (15 chapters)
1
Section 1: Zscaler for Modern Enterprise Internet Security
8
Section 2: Zero-Trust Network Access (ZTNA) for the Modern Enterprise

Introducing the Zscaler cloud architecture

Let's get started with an overview of how the Zscaler cloud is architected to be modular and highly available, which is nowadays a bare-minimum necessity for enterprises.

When an enterprise is provisioned on a Zscaler cloud, they get an instance on that Zscaler cloud. The enterprise administrator then proceeds to customize and configure their security policies and controls in the assigned cloud instance. This configuration includes users, groups, departments, and a collection of management policies and settings. This information is used by the Zscaler component to act on the user traffic and enforce the policies.

The aforementioned configuration resides in the Zscaler cloud CA, which is the core that has the intelligence to manage the entire cloud. It is also the same engine that supplies the necessary information to other Zscaler cloud components to perform their functions. The CA is not just one server somewhere in the cloud;...