Container Security Best Practices and Solutions

What are Containers?

Containers are based on an entirely isolated environment, they provide a solution to the problem of how to get the software to run reliably when migrating from one computing ecosystem to another computing ecosystem. This article will give an overview of Container Security.

Benefits of Enabling Container Security

  • Allows development teams to move fast, deploy software efficiently.
  • Less overhead operations as Containers require fewer system resources.
  • Applications operating in containers can be deployed quickly to different operating systems.

Guide to Container Security Best Practices

Here are some useful things that one should follow while using the containers –

Create Immutable Containers – Immutable infrastructure is a paradigm in which servers are never modified after they are deployed, i.e., they can be only rebuilt. Therefore, in the case of containers, if there is an increase of any defects or vulnerabilities, developers can rebuild and redeploy containers.

Securing Images for Container Security- Containers make it easy to quickly build, share, and deploy the images, which might be a risk if you don’t have an excellent way to control where the images come from and what is contained in the image. Therefore, you must specify the list of trusted sources for the images and libraries.

Securing Registries for Container Security- Once the image is built and secured in the best way possible, so now the image must be stored in a registry. If the image is stored in a registry, one should scan them regularly for the vulnerabilities.

Run Images From Trusted Sources – Building images from trusted sources can minimize the attack surface. While building images from trusted sources, there are still some chances that vulnerabilities can be present. Therefore, it is recommended to scan the content with the scanning tool.

Securing Deployment for Container Security – The target environment needs to be secure, i.e., the operating system should be appropriately hardened on which containers are running. If deployed to cloud environments, one should consider immutable deployments.

Keeping Containers Lightweight – Usually, containers are lighter than the virtual machines. While running containers, it is possible to load too many packages. Therefore, lightweight containers should be chosen for reliability.

Implement Robust Access Control – In containers, all the users are assigned root privileges by default. Therefore, it is necessary to change their access privileges to a non-root user. By using role-based access control (RBAC), you can configure specific sets of permissions.

Handle Confidential Data With Care – Never store secrets like keys, tokens, passwords, and confidential information inside docker files, because even if the data is deleted, it can easily be retrieved from the image history.

Summarizing Container Security

Containers are gaining popularity as they are efficient and fast. Therefore, Containers Security must require a different approach. So, one should follow these Container Security Best Practices. Usually, three distinct layers need to be achieved in a container implementation, i.e., images, containers that contain these images and the host that is running these containers. To understand more about Containers we advise taking the following steps –

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