Ensure that Activity Log Alert exists for Create or Update Public IP Address rule

Description:

Create an activity log alert for the Create or Update Public IP Addresses rule.

Rationale:

Monitoring for Create or Update Public IP Address events gives insight into network access changes and may reduce the time it takes to detect suspicious activity.

There will be a substantial increase in log size if there are a large number of administrative actions on a server.

From Azure Portal

1. Navigate to the Monitor blade.
2. Select 'Alerts'.
3. Select 'Create'.
4. Select 'Alert rule'.
5. Under 'Filter by subscription', choose a subscription.
6. Under 'Filter by resource type', select 'Public IP addresses'.
7. Under 'Filter by location', select 'All'.
8. From the results, select the subscription.
9. Select 'Done'.
10. Select the 'Condition' tab.
11. Under 'Signal name', click 'Create or Update Public Ip Address (Microsoft.Network/publicIPAddresses)'.
12. Select the 'Actions' tab.
13. 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.
14. Select the 'Details' tab.
15. Select a 'Resource group', provide an 'Alert rule name' and an optional 'Alert rule description'.
16. Click 'Review + create'.
17. Click 'Create'.

From Azure CLI

az monitor activity-log alert create --resource-group "" --condition category=Administrative and operationName=Microsoft.Network/publicIPAddresses/write and level=<verbose | information | warning | error | critical>--scope "/subscriptions/" --name "" --subscription --action-group --location global

From PowerShell

Create the 'Conditions' object.

$conditions = @()
$conditions += New-AzActivityLogAlertAlertRuleAnyOfOrLeafConditionObject -Equal Administrative -Field category
$conditions += New-AzActivityLogAlertAlertRuleAnyOfOrLeafConditionObject -Equal Microsoft.Network/publicIPAddresses/write -Field operationName
$conditions += New-AzActivityLogAlertAlertRuleAnyOfOrLeafConditionObject -Equal Verbose -Field level

Retrieve the 'Action Group' information and store in a variable, then create the 'Actions' object.

$actionGroup = Get-AzActionGroup -ResourceGroupName -Name
$actionObject = New-AzActivityLogAlertActionGroupObject -Id $actionGroup.Id

Create the 'Scope' object

$scope = "/subscriptions/"

Create the 'Activity Log Alert Rule' for 'Microsoft.Network/publicIPAddresses/write'

New-AzActivityLogAlert -Name "" -ResourceGroupName "" -Condition $conditions -Scope $scope -Location global -Action $actionObject -Subscription -Enabled $true