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VPC Flow Logs - an Introduction

If you’re running solutions on the AWS platform, you most likely have a Virtual Private Cloud (VPC). The majority of deployed VPCs don’t have an essential feature enabled - VPC Flow Logs.

VPC Flow logs provide insight into the traffic flowing in (and out) of your VPC. You can enable logging for an entire VPC, subnets or network interfaces within a VPC. During the setup process, you can decide what you want to record - Rejected, Accepted, or All traffic.