'Create or Update Public Ip Address' activity log alert should be configured

azure.activity_log
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Description

To enhance network security monitoring and expedite the detection of suspicious activity, it is recommended to create an activity log alert specifically for the “Create or Update Public IP Addresses Rule” event. By enabling this alert, you gain valuable insights into changes made to public IP addresses rules. It is important to note that enabling this alert may lead to a substantial increase in log size, especially if there are a significant number of administrative actions performed on a server. However, the benefits of improved security monitoring outweigh the potential impact on log size.

Remediation

From the console

  1. Navigate to the Monitor blade.
  2. Select Alerts > Create > Alert rule.
  3. Under Filter by subscription, choose a subscription.
  4. Under Filter by resource type, select Public IP addresses.
  5. Under Filter by location, select All.
  6. From the results, select the subscription, then click Done.
  7. Click the Condition tab.
  8. Under Signal name, click Delete Create/Update Public Ip Address (Microsoft.Network/publicIPAddresses).
  9. Click the Actions tab.
  10. To use an existing action group, click Select action groups. To create a new action group, click Create action group. Fill out the appropriate details for the selection.
  11. Click the Details tab.
  12. Select a Resource group, then provide an Alert rule name and an optional Alert rule description.
  13. Click Review + create.
  14. Click Create.