AWS Security Blog
Category: AWS WAF
How to Configure Rate-Based Blacklisting with AWS WAF and AWS Lambda
Note from July 3, 2017: The solution in this post has been integrated into AWS WAF Security Automations, and AWS maintains up-to-date solution code in the companion GitHub repository. One security challenge you may have faced is how to prevent your web servers from being flooded by unwanted requests, or scanning tools such as bots and […]
How to Automatically Update Your Security Groups for Amazon CloudFront and AWS WAF by Using AWS Lambda
July 29, 2025: This blog post is outdated. Use CloudFront’s managed prefix list for Security Groups instead of the Lambda solution. CloudFront now supports VPC origins, allowing secure connectivity to private VPC resources. For details on managed prefix lists, see this post. For VPC origins implementation guide, refer to this post. April 1, 2021: Before […]