We are happy to announce the general availability of Azure Firewall logs as a datasource following its initial introduction in May.

Customers can consolidate flow records generation by using Azure Firewall as the primary source of flow information sent to Kentik. The ingest process is identical to the one used for NSG flow logs and requires customers to store records in their storage accounts.

Customers can filter traffic flows traveling through a particular firewall in the Data Explorer by using the “Logging Resource Category” and “Logging Resource Name” dimensions and then excluding NetworkSecurityGroupFlowEvent (NSG flow logs):

Note: Azure Firewall flow logs don’t have traffic throughput information, so users must choose flows/s as the metrics instead of bit/s. This will create a visualization similar to the graph shown above, and allow Kentik to see flows going through the firewall. With these metrics, customers can determine the relative load of the Azure Firewall and attribute flows to the firewalls.

For customers seeking traffic throughput information from Azure Firewall Logs, the Azure team has advised using “Fat Flows”. However, at the time of publishing this announcement, the Fat Flows feature is in preview and unavailable for API ingestion. Once it is fully supported in the API, Kentik will add “Fat Flows” support.