Additional EC2 Features
The AWS EC2 services come with a wide range of features to help you efficiently manage the deployment of computing services in your AWS accounts. Some of these key features are described in the following sub-sections.
Security Groups
As previously discussed in Chapter 4, Building Private Networks in the Cloud with Amazon VPC, a security group is a firewall service that protects certain resources you deploy from unauthorized traffic. You attach security groups to your EC2 instances to define what inbound and outbound traffic will be allowed in those instances.
Before launching an instance, it is necessary to configure a security group and associate it with the instance. The security group defines the inbound and outbound traffic rules for the instance. This can be done from either the VPC management console or the EC2 management console.
Instance Metadata
Instance metadata is a feature of Amazon EC2 that provides information about an instance to...
