When you launch a virtual server (an EC2 instance) in AWS, you often need that server to perform actions—such as uploading files to S3 or writing logs to CloudWatch. To do this, the server needs permissions.
The URL provided is a critical component in the AWS ecosystem, enabling secure, dynamic access to AWS resources for EC2 instances. By leveraging the Instance Metadata Service, applications on EC2 instances can obtain necessary credentials to interact with AWS services securely. This approach aligns with best practices for managing access and minimizing the exposure of sensitive credentials. When you launch a virtual server (an EC2
AWS provides the Instance Metadata Service (IMDS) at the non-routable IP address 169.254.169.254 . This service allows applications running on an EC2 instance to retrieve information about the instance itself without needing an external API call. By leveraging the Instance Metadata Service, applications on
: This is a special IP address known as the link-local address or more specifically in cloud computing, it's used for accessing instance metadata. This IP address is not routable and can only be accessed from within the instance. This service allows applications running on an EC2
Write rules to block requests containing: