Bringing new security features to Docker
In the first of this series on Docker security, I wrote "containers do not contain." In this second article, I'll cover why and what we're doing about it.
Docker, Red Hat, and the open source community are working together to make Docker more secure. When I look at security containers, I am looking to protect the host from the processes within the container, and I'm also looking to protect containers from each other. With Docker we are using the layered security approach, which is "the practice of combining multiple mitigating security controls to protect resources and data."
Basically, we want to put in as many security barriers as possible to prevent a break out. If a privileged process can break out of one containment mechanism, we want to block them with the next. With Docker, we want to take advantage of as many security mechanisms of Linux as possible.
Luckily, with Red Hat Enterprise Linux (RHEL) 7, we get a plethora of security features.
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