3.4.1 How to analyze reachability (for example, by using VPC Reachability Analyzer and Amazon Inspector)

3.4.1 How to analyze reachability for example, by using VPC Reachability Analyzer and Amazon Inspector - Heres a podcast-friendly summary in about six sentences In this episode, we dive into how AWS engineers troubleshoot network security, focusing on reachability analysisa key skill for the AWS Certified Security - Specialty exam. We explore how tools like Amazon VPC Reachability Analyzer help diagnose connectivity issues by mapping network paths and identifying exactly where traffic gets blocked, whether by security groups, NACLs, or route tables. Meanwhile, Amazon Inspectors Network Reachability feature scans your environment to flag unintended exposures, such as publicly accessible resources, and provides prioritized remediation advice. We discuss best practices, including integrating log analysis from VPC Flow Logs and CloudTrail, leveraging traffic mirroring for deep packet inspection, and automating fixes with services like Lambda and EventBridge. Listeners will learn how understanding networking fundamentals, regularly testing network paths, and combining these AWS tools creates a defense-in-depth approach to cloud security. Whether youre studying for the exam or improving your production environment, these strategies will help you diagnose, resolve, and prevent network vulnerabilities on AWS.

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