AWS security group is known as the widely used and abused configurations within the AWS environment. Those of you who have been using cloud for a long time might be well familiar with all of that. The Amazon Web Services come with a secure global infrastructure and services for cloud. It lets you build a system by using the foundation and architect. While using AWS, you will get secure infrastructure and services. You as the customer will be responsible for securing your operating system, platform and data.
AWS security groups have a simple configuration method. It has been observed that many of the users forget it sometimes and they hence never care to follow the best practices. In this world, when security concerns are high, proactive and reactive speed are the determinants of the winners. If you are using security group in isolation, it will never make sense. That is why they are to be used with the best practices.
Take a look at some of the prominent best practices of AWS security to begin with:
AWS (IAM) Identity and Access Management is meant for controlling who within the organization has the permission or right for creating and managing the security groups and the networks ACLs. In order to create a better defense, you must isolate the roles and responsibilities. For example, the access to the admin panel must only be given to the network administrators or the security admin and restrict other roles.
Enable the AWS Cloud trail for the accounts. It will work by logging all the security group events. This is quite essential when it comes to managing the operations of the security groups. It can be used for creating event streams and AWS Lambda can be used for the processing. Whenever you delete the security group, this event is captured along with all the details of the log. The events triggered in AWS Lambda process the SG change and create alerts on the dashboard or send an email according to the workflow. You can easily react to the events in just a matter of 7 minutes.
Use the AWS App configuration by enabling it in your AWS Account. This app is responsible for recording all the events related to the changes in the security group. It also lets you send emails.
It is also included in the best practices for naming the conventions of the Amazon Web Services Security group. Make sure that the naming convention follows the enterprise standards.
For making use of in-depth security, you must be sure that Amazon Web Services Security groups naming is self-explanatory and you keep the standards of naming internal. For example, UbuntuWedCRMP is a group that is self-explanatory for the hackers. It is a production of the CRM web tier that runs on the Ubuntu OS.
Useautomation facility for detecting the EC2ELB and other AWS assetswhich are associated with the security groups. This will help you detect the security groups which are kept idle having no alert associations. You must get rid of these groups because they create unwanted confused over time.
When you create the VPC in the AWS Account, a default security group for VPC is created. You are supposed to satisfy a different security group while launching an instance. If you don’t do this, it will automatically get association with any of the default groups. The inbound traffic from with the associated group will be allowed. This default security group is known as the source security group within the inbound rules. It allows the instances with the default security group to communicate with other instances within the same group. This is never considered to be a good security practice. In case you don’t wantall instances to use the default security group, it is recommended to create your own security group and specify them as you launch the instances. All this is applicable to EC2, Elastic Cache and RDS. Hence, the best practice is to detect the default security groups time after time and alert to the MS OR SOC.
The alerts through email and cloud management dashboard must always be triggered when a critical security group or rule is added, modified, or deleted in the production. This is considered important when it is the matter of reactive action of the managed security operations.
As you start using the best practices, you will see that AWS security concerns will no longer bother you.