Book Image

Cloud Security Handbook

By : Eyal Estrin
Book Image

Cloud Security Handbook

By: Eyal Estrin

Overview of this book

Securing resources in the cloud is challenging, given that each provider has different mechanisms and processes. Cloud Security Handbook helps you to understand how to embed security best practices in each of the infrastructure building blocks that exist in public clouds. This book will enable information security and cloud engineers to recognize the risks involved in public cloud and find out how to implement security controls as they design, build, and maintain environments in the cloud. You'll begin by learning about the shared responsibility model, cloud service models, and cloud deployment models, before getting to grips with the fundamentals of compute, storage, networking, identity management, encryption, and more. Next, you'll explore common threats and discover how to stay in compliance in cloud environments. As you make progress, you'll implement security in small-scale cloud environments through to production-ready large-scale environments, including hybrid clouds and multi-cloud environments. This book not only focuses on cloud services in general, but it also provides actual examples for using AWS, Azure, and GCP built-in services and capabilities. By the end of this cloud security book, you'll have gained a solid understanding of how to implement security in cloud environments effectively.
Table of Contents (19 chapters)
1
Section 1: Securing Infrastructure Cloud Services
6
Section 2: Deep Dive into IAM, Auditing, and Encryption
10
Section 3: Threats and Compliance Management
14
Section 4: Advanced Use of Cloud Services

What are the cloud deployment models?

Now that we understand what the cloud characteristics are, let's talk about cloud deployment models:

  • Private cloud: An infrastructure deployed and maintained by a single organization. Let's say we are a large financial organization (such as a bank or insurance organization), we would like to serve various departments in our organization (from HR, IT, sales, and so on), and we might have regulatory requirements to keep customers' data on-premises – a private cloud can be a suitable solution.
  • Public cloud: An infrastructure deployed and maintained by a service provider for serving multiple customers and organizations, mostly accessible over the internet. Naturally, this book will focus on the public cloud model, with reference to various services offered by AWS, Azure, and GCP.
  • Hybrid cloud: A combination of a private cloud (or on-premises cloud) and at least one public cloud infrastructure. I like to consider the hybrid cloud as an extension of the local data center. We should not consider this extension as something separate, and we should protect it the same way we protect our local data center.
  • Multi-cloud: A scenario where our organization is either using multiple managed services (see the definition of SaaS in the next section) or using multiple public cloud infrastructure (see the definitions of IaaS and PaaS in the next section).