Learn how to enable and centralize AWS WorkSpaces DNS query logging for monitoring and SIEM integration analysis without added cost or complexity.
Table of Contents
Question
A real estate company is using Amazon Workspaces to provide corporate managed desktop service to its real estate agents around the world. These Workspaces are deployed in seven VPCs. Each VPC is in a different AWS Region.
According to a new requirement, the company’s cloud-hosted security information and events management (SIEM) system needs to analyze DNS queries generated by the Workspaces to identify the target domains that are connected to the Workspaces. The SIEM system supports poll and push methods for data and log collection.
Which solution should a network engineer implement to meet these requirements MOST cost-effectively?
A. Create VPC flow logs in each VPC that is connected to the Workspaces instances. Publish the log data to a central Amazon S3 bucket. Configure the SIEM system to poll the S3 bucket periodically.
B. Configure an Amazon CloudWatch agent to log all DNS requests in Amazon CloudWatch Logs. Configure a subscription filter in CloudWatch Logs. Push the logs to the SIEM system by using Amazon Kinesis Data Firehose.
C. Configure VPC Traffic Mirroring to copy network traffic from each Workspace and to send the traffic to the SIEM system probes for analysis.
D. Configure Amazon Route 53 query logging. Set the destination as an Amazon Kinesis Data Firehose delivery stream that is configured to push data to the SIEM system.
Answer
D. Configure Amazon Route 53 query logging. Set the destination as an Amazon Kinesis Data Firehose delivery stream that is configured to push data to the SIEM system.
Explanation
Option D is the most cost-effective solution that meets the requirements. Amazon Route 53 query logging can be enabled to log all DNS queries from the WorkSpaces. The query logs can go to a Kinesis Data Firehose for real-time delivery to the SIEM system. This leverages Route 53 native capability for DNS logging without additional data flows or agents.
Option A requires custom flows and storage for the logs. Option B has added CloudWatch Logs charges. Option C incurs network traffic mirroring transfer costs. Option D uniquely uses built-in Route 53 logs with direct Firehose integration.
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