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Hands-On Linux Administration on Azure

You're reading from   Hands-On Linux Administration on Azure Explore the essential Linux administration skills you need to deploy and manage Azure-based workloads

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Product type Paperback
Published in Aug 2018
Publisher Packt
ISBN-13 9781789130966
Length 410 pages
Edition 1st Edition
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Author (1):
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Frederik Vos Frederik Vos
Author Profile Icon Frederik Vos
Frederik Vos
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Table of Contents (14) Chapters Close

Preface 1. Exploring the Azure Cloud FREE CHAPTER 2. Getting Started with the Azure Cloud 3. Basic Linux Administration 4. Managing Azure 5. Advanced Linux Administration 6. Managing Linux Security and Identities 7. Deploying Your Virtual Machines 8. Exploring Continuous Configuration Automation 9. Container Virtualization in Azure 10. Working with Azure Kubernetes Service 11. Troubleshooting and Monitoring Your Workloads 12. Assessments 13. Other Books You May Enjoy

Systemd security

The systemd units can also provide an extra layer of security. You can add several options to your unit file to make your unit more secure.

Just edit the unit file using systemctl --edit and add the security measures. For instance, execute the following:

sudo systemctl --edit sshd

Add the following lines:

[Service]
ProtectHome=read-only

Save the file, reread the systemctl configuration, and restart sshd:

sudo systemctl daemon-reload

sudo systemctl restart sshd

Now log in again with your SSH client and try to save a file in your home. It will fail because it's a read-only filesystem:

Restricting access to the filesystem

The ProtectHome parameter is a very interesting one. The following values are available...

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