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Answer: VPC Flow Logs
VPC Flow Logs - VPC Flow Logs is a feature that enables you to capture information about the IP traffic going to and from network interfaces in your VPC. Flow log data can be published to Amazon CloudWatch Logs or Amazon S3. After you've created a flow log, you can retrieve and view its data in the chosen destination. You can create a flow log for a VPC, a subnet, or a network interface. If you create a flow log for a subnet or VPC, each network interface in that subnet or VPC is monitored. Flow log data for a monitored network interface is recorded as flow log records, which are log events consisting of fields that describe the traffic flow. To create a flow log, you specify: The resource for which to create the flow log The type of traffic to capture (accepted traffic, rejected traffic, or all traffic) The destinations to which you want to publish the flow log data Incorrect options: VPN logs Subnet logs BGP logs These three options are incorrect and have been added as distractors.
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A company has established a connection from its on-premises data center to Amazon EC2 instances within its AWS account using a Border Gateway Protocol (BGP) based AWS VPN. The development team is able to access an EC2 instance located in subnet A but encounters issues when trying to access an EC2 instance located in subnet B, both of which reside within the same Virtual Private Cloud (VPC).
To troubleshoot and verify if the traffic is reaching subnet B, which logs should be utilized?
A
VPN logs
B
VPC Flow Logs
C
BGP logs
D
Subnet logs
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