Cloudwatch Filters
From Federal Burro of Information
http://docs.aws.amazon.com/AmazonCloudWatch/latest/logs/FilterAndPatternSyntax.html
{ $.mfaAuthenticated = "false" }
{ $.userIdentity.type != "AssumedRole" }
{ ( $.eventSource != "iam.amazonaws.com" ) && ( $.eventSource != "cloudtrail.amazonaws.com" ) && ( $.eventSource != "elasticfilesystem.amazonaws.com" )}
{ ( $.eventSource = "ec2.amazonaws.com" ) && ( $.eventName != "DescribeInstanceStatus" ) }
{ $.userIdentity.sessionContext.attributes.mfaAuthenticated != "true" }
{ ( $.eventSource != "iam.amazonaws.com" ) && ( $.eventSource != "cloudtrail.amazonaws.com" ) && ( $.eventSource != "elasticfilesystem.amazonaws.com" ) && ( $.eventSource != "sts.amazonaws.com" ) && ( $.eventSource != "signin.amazonaws.com" ) && ( $.eventSource != "ec2.amazonaws.com" ) && ( $.eventSource != "logs.amazonaws.com" ) }
{ ( $.eventSource = "ec2.amazonaws.com" ) && ( $.eventName != "DescribeInstanceStatus" ) && ( $.eventName != "DescribeVolumeStatus" ) && ( $.eventName != "DescribeAddresses" )}
{ ( $.eventSource = "ec2.amazonaws.com" ) && ( $.eventName != "Describe*" ) && ( $.eventName != "Create*" ) && ( $.eventName != "Delete*" ) }
{ ( $.eventSource = "ec2.amazonaws.com" ) && ( $.eventName = "StopInstances" ) }
&& ( $.eventName != "DescribeVolumeStatus" ) && ( $.eventName != "DescribeAddresses" ) && ( $.eventName != "DescribeAddresses" )}