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)
Section 1: Securing Infrastructure Cloud Services
Section 2: Deep Dive into IAM, Auditing, and Encryption
Section 3: Threats and Compliance Management
Section 4: Advanced Use of Cloud Services

Network architecture for hybrid cloud environments

The second important thing to consider when building a hybrid architecture is how to connect from the on-premises environment to the cloud.

The recommended way to connect to cloud environments, considering the cloud as an extension of the local data center, is to use a secure and permanent network connection – either site-to-site VPN or a dedicated connection.

A secured and permanent connection will allow you to set access control (layer 4 firewall rules) between on-premises segments and cloud segments and retain access to resources in the cloud (or allow access from cloud resources to the on-premises environment) in terms of business needs. The following are some of the solutions that you can choose depending upon the specific situation you are dealing with:

  • You should choose a VPN solution in the following situations:
    • You need a fast deployment time.
    • You are OK passing an IPsec tunnel over the internet.
    • You do not...