A CloudWatch Alarm that triggers when changes are made to Network ACLs.

 
Tags
EC2
Source
Custom
Items
2
Size
1.1 KB
Missing Parameters
AWSTemplateFormatVersion: '2010-09-09'
Resources:
  CloudWatchAlarm:
    Type: 'AWS::CloudWatch::Alarm'
    Properties:
      AlarmName: nacl_changes
      AlarmDescription: A CloudWatch Alarm that triggers when changes are made to Network ACLs.
      MetricName: NetworkAclEventCount
      Namespace: CloudTrailMetrics
      Statistic: Sum
      Period: '300'
      EvaluationPeriods: '1'
      Threshold: '1'
      ComparisonOperator: GreaterThanOrEqualToThreshold
      AlarmActions:
        - ''
      TreatMissingData: notBreaching
  MetricFilter:
    Type: 'AWS::Logs::MetricFilter'
    Properties:
      LogGroupName: ''
      FilterPattern: >-
        { ($.eventName = CreateNetworkAcl) || ($.eventName =
        CreateNetworkAclEntry) || ($.eventName = DeleteNetworkAcl) ||
        ($.eventName = DeleteNetworkAclEntry) || ($.eventName =
        ReplaceNetworkAclEntry) || ($.eventName = ReplaceNetworkAclAssociation)
        }
      MetricTransformations:
        - MetricValue: '1'
          MetricNamespace: CloudTrailMetrics
          MetricName: NetworkAclEventCount
Parameters: {}
Metadata: {}
Conditions: {}

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Alarm Configuration


Metric Filter Configuration


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