Showing only posts by Bryan Van Hook. Show all posts.

Centrally manage VPC network ACL rules to block unwanted traffic using AWS Firewall Manager

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Amazon Virtual Private Cloud (Amazon VPC) provides two options for controlling network traffic: network access control lists (ACLs) and security groups. A network ACL defines inbound and outbound rules that allow or deny traffic based on protocol, IP address range, and port range. Security groups determine which inbound and …

Automatically detect and block low-volume network floods

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In this blog post, I show you how to deploy a solution that uses AWS Lambda to automatically manage the lifecycle of Amazon VPC Network Access Control List (ACL) rules to mitigate network floods detected using Amazon CloudWatch Logs Insights and Amazon Timestream. Application teams should consider the impact …