Linux containers, especially Docker containers, have a few interesting security-fulfilling features innately.

As discussed, Docker uses a host of security barricades to stop breaking out. That is, if one security mechanism gets broken, other mechanisms quickly come in the way of containers being hacked. There are a few mainline zones that are to be examined when evaluating the security implications of Docker containers. As emphasized previously, Docker brings a variety of isolation capabilities to containerized applications to sharply increase their security. Most of them are made available out of the box. The policy addition, annulment, and amendment capabilities at granular level take care of the security requirements of containerization. The Docker platform allows you to do the following:

• Isolate applications from each other
• Isolate applications from the host
• Improve the security of your application by restricting its capabilities
• Encourage adoption of the principle of least privilege

This open-source platform is inherently able to provide these isolations for all kinds of applications on different runtime environments such as VMs, bare metal servers, and traditional IT.