# AWS VPC Transit Gateway Flow

Scanner supports AWS VPC Transit Gateway flow logs, which contain data about the IP traffic going to and from your transit gateways. In order for Scanner to see these logs, you can configure VPC to publish these logs to S3.

## Step 1: Create a VPC Transit Gateway flow log to publish log events to S3

You can follow the AWS documentation to configure VPC to write Transit Gateway flow logs to an S3 bucket. For the best results, we recommend selecting the **Parquet** log file format. See: [Create a Transit Gateway Flow Logs record that publishes to Amazon S3](https://docs.aws.amazon.com/vpc/latest/tgw/flowlog-s3-create.html).

## Step 2: Ingest via Scanner Collect

Follow the [Custom Logs - AWS S3](/scanner/using-scanner-complete-feature-reference/data-ingestion/sources/custom-logs-aws-s3.md) guide to ingest logs from S3 via Scanner Collect.


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