AWS Security Group: The Complete Guide (Rules, Limits, Terraform & Examples)
Picture securing your AWS estate not as a checklist chore, but as a dynamic strategy that evolves with your apps-from monoliths to microservices in a Kubernetes swarm. Security Groups are your VPC’s gatekeepers, but missteps like stale rules or over-permissive defaults can expose you to lateral movement attacks. We’ll unpack their stateful magic, quota pitfalls, and NACL contrasts, then dive into Terraform for laC wins and overlooked gems like Reachability Analyzer for proof-of-concept reachability. For Indian enterprises navigating DPDP’s data sovereignty mandates, we’ll touch on audit-friendly egress tweaks.