AWS Certified SysOps Administrator Official Study Guide. Cole Stephen
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RDS), Amazon Redshift, Amazon EMR, Amazon WorkSpaces, and several other services. These services provide the scalability and flexibility of cloud-based resources with the additional benefit of being managed. For these services, AWS will handle basic security tasks like guest operating system and database patching, firewall configuration, and disaster recovery. For most of these managed services, all you have to do is configure logical access controls for the resources and protect your account credentials. A few of them may require additional tasks, such as setting up database user accounts, but the overall security configuration work is performed by the service.
With the AWS Cloud, you can provision virtual servers, storage, databases, and desktops in minutes instead of weeks. You can also use cloud-based analytics and workflow tools to process your data as you need it, and then store it in your own datacenters or in the cloud. Which AWS Cloud services you use determines how much configuration work you have to perform as part of your security responsibilities. For example, for Amazon Elastic Compute Cloud (Amazon EC2) instances, you’re responsible for management of the guest operating system (including updates and security patches), any application software or utilities you install on the instances, and the configuration of the AWS-provided firewall (called a security group) on each instance. These are basically the same security tasks that you’re used to performing no matter where your servers are located. AWS managed services like Amazon RDS or Amazon Redshift provide all of the resources you need in order to perform a specific task, but without the configuration work that can come with them. With managed services, you don’t have to worry about launching and maintaining instances, patching the guest operating system or database, or replicating databases – AWS handles that for you. But as with all services, you should protect your AWS account credentials, and set up individual user accounts with AWS Identity and Access Management (IAM) so that each of your users has her own credentials, and you can implement segregation of duties. You should consider using Multi-Factor Authentication (MFA) with each account, requiring the use of SSL/TLS to communicate with your AWS resources, and setting up Application Programming Interface (API) and user activity logging with AWS CloudTrail. Figure 3.1 demonstrates the shared responsibility model.
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