Pipeline: 6.1.5 Ensure that Network Security Group Flow logs are captured and sent to Log Analytics

Description

Ensure that network flow logs are captured and fed into a central log analytics workspace.

Network Flow Logs provide valuable insight into the flow of traffic around your network and feed into both Azure Monitor and Azure Sentinel (if in use), permitting the generation of visual flow diagrams to aid with analyzing for lateral movement, etc.

Remediation

From Azure Portal

Navigate to Network Watcher.
Under Logs, select Flow logs.
Select + Create.
Select the desired Subscription.
For Flow log type, select Network security group.
Select + Select target resource.
Select Network security group.
Select a network security group.
Click Confirm selection.
Select or create a new Storage Account.
If using a v2 storage account, input the retention in days to retain the log.
Click Next.
Under Analytics, for Flow log version, select Version 2.
Check the box next to Enable traffic analytics.
Select a processing interval.
Select a Log Analytics Workspace.
Select Next.
Optionally add Tags.
Select Review + create.
Select Create.

Warning The remediation policy creates remediation deployment and names them by concatenating the subscription name and the resource group name. The MAXIMUM permitted length of a deployment name is 64 characters. Exceeding this will cause the remediation task to fail.

Default Value

By default Network Security Group logs are not sent to Log Analytics.

Run the pipeline

To run this pipeline from your terminal:

flowpipe pipeline run azure_cis.pipeline.cis_v300_6_1_5

Use this pipeline

To call this pipeline from your pipeline, use a step:

step "pipeline" "step_name" {
  pipeline = azure_cis.pipeline.cis_v300_6_1_5  
}

Params

Name	Type	Required	Description	Default
database	connection.steampipe	Yes	Database connection string.	`connection.steampipe.default`
notifier	notifier	Yes	The name of the notifier to use for sending notification messages.	`notifier.default`
notification_level	string	Yes	The verbosity level of notification messages to send. Valid options are 'verbose', 'info', 'error'.	`info`
approvers	list(notifier)	Yes	List of notifiers to be used for obtaining action/approval decisions.	`notifier.default`

Outputs

This pipeline has no outputs.