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Version: 7.0

AWS VPC FLow Logs

Overview

NetObserv Flow can collect AWS VPC Flow Logs which are stored in S3. All fields are supported from VPC Flow Log versions 2 thru 5.

When ElastiFlow processes logs from the specified S3 bucket, the input moves them to the elastiflow-processed folder. This behavior is essential to ensure that the collector can easily identify and exclude already processed logs on subsequent queries, thereby preventing the reprocessing of the same logs. The schema of the logs remains unchanged; only their location within the S3 bucket is modified.

EF_AWS_VPC_FLOW_LOG_S3_ENABLE

  • Valid Values
    • true, false
  • Default
    • false

EF_AWS_VPC_FLOW_LOG_S3_BUCKET

The S3 bucket from which to fetch AWS VPC Flow Logs.

  • Default
    • ''

EF_AWS_VPC_FLOW_LOG_S3_PREFIX

  • Default
    • AWSLogs

EF_AWS_VPC_FLOW_LOG_S3_POOL_SIZE

Specifies the number of concurrent workers to start. Increasing the number of workers will allow the collector to better handle a processing vpc flow logs in s3.

  • Default
    • number of license units

EF_AWS_VPC_FLOW_LOG_S3_TLS_ENABLE

This setting is used to enable/disable TLS connections to AWS S3.

  • Valid Values
    • true, false
  • Default
    • false

EF_AWS_VPC_FLOW_LOG_S3_TLS_SKIP_VERIFICATION

This setting is used to enable/disable TLS verification of the AWS S3 endpoint to which the input is attempting to connect.

  • Valid Values
    • true, false
  • Default
    • false

EF_AWS_VPC_FLOW_LOG_S3_TLS_CA_CERT_FILEPATH

The path to the Certificate Authority (CA) certificate to use for verification of the AWS S3 endpoint to which the input is attempting to connect.

  • Default
    • ''

EF_AWS_VPC_FLOW_LOG_S3_TLS_MIN_VERSION

This setting is used to set the TLS minimum version

  • Valid Values
    • 1.2, 1.3
  • Default
    • 1.2

EF_AWS_VPC_FLOW_LOG_FIREHOSE_S3_ENABLE

This setting is used to declare an S3 bucket receives data from Amazon Firehose instead of directly from VPCs.

  • Valid Values
    • true, false
  • Default
    • false

EF_AWS_VPC_FLOW_LOG_FIREHOSE_S3_LOG_FORMAT

This setting is used when the input is receiving data from Amazon Firehose. It specifies the format of the logs. Each key

  • Default
    • ${version} ${account-id} ${interface-id} ${srcaddr} ${dstaddr} ${srcport} ${dstport} ${protocol} ${packets} ${bytes} ${start} ${end} ${action} ${log-status}

AWS_REGION

The AWS SDK compatible environment variable that specifies the AWS Region to send the request to.

AWS_ACCESS_KEY_ID

Specifies an AWS access key associated with an IAM user or role.

AWS_SECRET_ACCESS_KEY

Specifies the secret key associated with the access key. This is essentially the "password" for the access key.