Category: Advanced (300)

In this blog post, we will show you how to use managed prefix lists to simplify management of your AWS Network Firewall rules and policies across your Amazon Virtual Private Cloud (Amazon VPC) in the same AWS Region. AWS Network Firewall is a stateful, managed, network firewall and intrusion detection and prevention service for your […]

March 7, 2023: We’ve added language clarifying the requirement around using VPC Endpoints, and we’ve corrected a typo in the S3 bucket policy example. Today AWS launched two new global condition context keys that make it simpler for you to write policies in which Amazon Elastic Compute Cloud (Amazon EC2) instance credentials work only when […]

In this blog post, we show you how to create an Amazon QuickSight dashboard to visualize the policy validation findings from AWS Identity and Access Management (IAM) Access Analyzer. You can use this dashboard to better understand your policies and how to achieve least privilege by periodically validating your IAM roles against IAM best practices. […]

Secrets managers are a great tool to securely store your secrets and provide access to secret material to a set of individuals, applications, or systems that you trust. Across your environments, you might have multiple secrets managers hosted on different providers, which can increase the complexity of maintaining a consistent operating model for your secrets. […]

Some web applications need to protect their authentication tokens or session IDs from cross-site scripting (XSS). It’s an Open Web Application Security Project (OWASP) best practice for session management to store secrets in the browsers’ cookie store with the HttpOnly attribute enabled. When cookies have the HttpOnly attribute set, the browser will prevent client-side JavaScript […]

February 6, 2023: Updates added to explain an additional detail regarding the sourceIdentity field. In addition to using the sourceIdentity field to reference the user through various roles they have assumed, you may also construct your IAM trust policies to enforce acceptable sourceIdentity values or ensure any value for sourceIdentity is set. When you use […]

Security teams use Amazon Macie to discover and protect sensitive data, such as names, payment card data, and AWS credentials, in Amazon Simple Storage Service (Amazon S3). When Macie discovers sensitive data, these teams will want to see examples of the actual sensitive data found. Reviewing a sampling of the discovered data helps them quickly […]

November 3, 2022: We updated this post to fix some syntax errors in the policy statements and to add additional use cases. August 30, 2021: This post is currently being updated. We will post another note when it’s complete. AWS Identity and Access Management (IAM) roles are a significant component of the way that customers […]

December 7, 2022: We added a caveat to the solution, for those using a traffic steering mechanism, in this post. Security and network administrators can control outbound access from a virtual private cloud (VPC) to specific destinations by using a service like AWS Network Firewall. You can use stateful rule groups to control outbound access […]

AWS Identity and Access Management (IAM) Access Analyzer provides tools to simplify permissions management by making it simpler for you to set, verify, and refine permissions. One such tool is IAM Access Analyzer policy generation, which creates fine-grained policies based on your AWS CloudTrail access activity—for example, the actions you use with Amazon Elastic Compute […]