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How secure is Amazon's container service?

With so many security options for Amazon containers, what is the best way to manage user access and isolate EC2 containers?

The use of shared computing resources is a central tenant of public cloud. It allows cloud providers to maximize...

the use of available resources while consumers potentially share the same servers -- and OS components in the case of containers. Some enterprises see potential security hazards in this paradigm. Container technology promises native security and isolation, but AWS supplies its own tools for containers running on EC2 instances.

Amazon EC2 Container Service (ECS) allows users to specify which Amazon container instances are exposed to the Internet, specify the IP range used for the virtual private cloud (VPC) hosting each instance and connect local IT to the VPC using encrypted IPsec virtual private network connections. There's no need to store or load container instances from public cloud sources; they can be reached from private Docker registries within the VPC.

IT teams also use high levels of control over security in the Amazon ECS cloud environment. ECS containers run on top of Elastic Compute Cloud (EC2) services, allowing users to manage the OS and security settings of container instances, such as adjusting OS security, managing patches, reviewing logs from AWS tools like AWS CloudTrail and running other monitoring tools. Admins can launch an Amazon container and tasks with different settings to tailor security according to each workload.

Amazon ECS security also provides control over authorized container users. For example, EC2 supports AWS identity and access management policies for specific container roles and users. This allows container creators and managers to stipulate roles to help prioritize load balancing and create user policies to limit access. Security groups and network access control lists are available to further restrict incoming and outgoing network traffic between container instances.

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This was last published in June 2015

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Is your enterprise concerned about container security? Why or why not?
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I have a feeling, as containers continue to grow as a must have, we will here more about these issues.
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