Book Image

Learn Kubernetes Security

By : Kaizhe Huang, Pranjal Jumde
5 (1)
Book Image

Learn Kubernetes Security

5 (1)
By: Kaizhe Huang, Pranjal Jumde

Overview of this book

Kubernetes is an open source orchestration platform for managing containerized applications. Despite widespread adoption of the technology, DevOps engineers might be unaware of the pitfalls of containerized environments. With this comprehensive book, you'll learn how to use the different security integrations available on the Kubernetes platform to safeguard your deployments in a variety of scenarios. Learn Kubernetes Security starts by taking you through the Kubernetes architecture and the networking model. You'll then learn about the Kubernetes threat model and get to grips with securing clusters. Throughout the book, you'll cover various security aspects such as authentication, authorization, image scanning, and resource monitoring. As you advance, you'll learn about securing cluster components (the kube-apiserver, CoreDNS, and kubelet) and pods (hardening image, security context, and PodSecurityPolicy). With the help of hands-on examples, you'll also learn how to use open source tools such as Anchore, Prometheus, OPA, and Falco to protect your deployments. By the end of this Kubernetes book, you'll have gained a solid understanding of container security and be able to protect your clusters from cyberattacks and mitigate cybersecurity threats.
Table of Contents (19 chapters)
1
Section 1: Introduction to Kubernetes
7
Section 2: Securing Kubernetes Deployments and Clusters
14
Section 3: Learning from Mistakes and Pitfalls

Security boundaries versus trust boundaries

Security boundary and trust boundary are often used as synonyms. Although similar, there is a subtle difference between these two terms. A trust boundary is where a system changes its level of trust. An execution trust boundary is where instructions need different privileges to run. For example, a database server executing code in /bin is an example of an execution crossing a trust boundary. Similarly, a data trust boundary is where data moves between entities with different trust levels. Data inserted by an end user into a trusted database is an example of data crossing a trust boundary.

Whereas a security boundary is a point of demarcation between different security domains, a security domain is a set of entities that are within the same access level. For example, in traditional web architecture, the user-facing applications are part of a security domain and the internal network is part of a different security domain. Security boundaries...