Amazon_CloudWatch_11
Real-time monitoring of API calls can be achieved by directing CloudTrail Logs to CloudWatch Logs and establishing corresponding metric filters and alarms. NACLs are used as a stateless packet filter to control ingress and egress traffic for subnets within a VPC. It is recommended that a metric filter and alarm be established for changes made to NACLs.
Perform the following to ensure a log metric filter and alarm exist for changes to Network Access Control Lists (NACL)
Note : Filter pattern for changes to Network Access Control Lists (NACL)
filterPattern”: “{ ($.eventName = CreateNetworkAcl) || ($.eventName =
CreateNetworkAclEntry) || ($.eventName = DeleteNetworkAcl) || ($.eventName =
DeleteNetworkAclEntry) || ($.eventName = ReplaceNetworkAclEntry) || ($.eventName =
ReplaceNetworkAclAssociation) }”
Perform the following to setup the metric filter, alarm, SNS topic, and subscription:
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