關於 system hardening ，我們在網路上蒐集到這些相關的討論、資訊與評價

ref: https://www.cncf.io/blog/2021/09/03/kubescape-the-first-open-source-tool-for-running-nsa-and-cisa-kubernetes-hardening-tests/

本篇文章是一個專案介紹文，該專案是個名為 Kubescape 的安全性掃描專案，該專案主要是用來檢驗目標 Kubernetes 是否能夠通過 NSA/CISA 等安全性檢查。

National Security Agency(NSA) 以及 Cybersecurity and Infrastructure Security Agency (CISA) 最近有發佈一個高達 52 頁的安全性指南，
該指南探討如何設立與強化 Kubernetes 叢集的安全性。
https://media.defense.gov/2021/Aug/03/2002820425/-1/-1/1/CTR_KUBERNETES%20HARDENING%20GUIDANCE.PDF

而 Kubescape 專案是一個基於 OPA(OpenPolicyAgent) 引擎的安全性檢查專案，該專案會從 Kubernetes API 取得各類型 Kubernetes 專案的資訊並且針對這些資訊去進行檢查。
檢查是基於上述 NSA/CISA 發布的安全性報告，該檢查的類別包含

1. Non-root containers
2. Immutable container filesystem
3. Building secure container images
4. Privileged containers
5. hostPID, hostIPC privileges
6. hostNetwork access
7. allowedHostPaths field
8. Protecting pod service account tokens
9. Pods in kube-system and kube-public
10. Resource policies
11. Control plane hardening
12. Encrypted secrets
13. Anonymous Requests

有興趣的可以試試看這個專案

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Name: New Life Float Center
Address: KL Gateway, 2.21, 2nd floor, No 2, Jalan Kerinchi, Germany Kerinchi Lestari, 59200 KL.
Tel: 03-79313001
Business hours: 11am - 9pm