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AWS Logging Services

Overview

A configuration package to enable AWS security logging and activity monitoring services: AWS CloudTrail, AWS Config, and Amazon GuardDuty. The package also includes an S3 bucket to store CloudTrail and Config history logs, as well as an optional CloudWatch log group to receive CloudTrail logs.

Configure & Deploy

Configuration Presets

  • Enables AWS CloudTrail, AWS Config, and Amazon GuardDuty
  • CloudTrail Trail applid to all regions and Log File Integrity Validation is enabled
  • S3 Bucket for CloudTrail logs and Config Logs: Server Side Encryption, Server Access Logging, and Block Public Access
  • CloudTrail configured to forward events to a CloudWatch Log Group, with 90 days retention period

Configuration Template

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AWSTemplateFormatVersion: '2010-09-09'
Description: ''
Resources:
  S3SharedBucket:
    Type: 'AWS::S3::Bucket'
    Properties:
      LoggingConfiguration: {}
      AccessControl: LogDeliveryWrite
      BucketEncryption:
        ServerSideEncryptionConfiguration:
          - ServerSideEncryptionByDefault:
              SSEAlgorithm: AES256
      PublicAccessBlockConfiguration:
        BlockPublicAcls: true
        BlockPublicPolicy: true
  BucketPolicy:
    Type: 'AWS::S3::BucketPolicy'
    Properties:
      Bucket:
        Ref: S3SharedBucket
      PolicyDocument:
        Version: '2012-10-17'
        Statement:
          - Principal:
              Service:
                - cloudtrail.amazonaws.com
                - config.amazonaws.com
            Action:
              - 's3:GetBucketAcl'
            Resource:
              - 'Fn::GetAtt':
                  - S3SharedBucket
                  - Arn
            Effect: Allow
            Condition: {}
          - Principal:
              Service:
                - cloudtrail.amazonaws.com
                - config.amazonaws.com
            Action:
              - 's3:PutObject'
            Resource:
              - 'Fn::Join':
                  - ''
                  - - ''
                    - 'Fn::GetAtt':
                        - S3SharedBucket
                        - Arn
                    - /*
            Effect: Allow
            Condition:
              StringEquals:
                's3:x-amz-acl': bucket-owner-full-control
    DependsOn: S3SharedBucket
  CloudTrail:
    Type: 'AWS::CloudTrail::Trail'
    Properties:
      TrailName: ManagementEventsTrail
      IsLogging: true
      EnableLogFileValidation: true
      EventSelectors:
        - IncludeManagementEvents: true
          ReadWriteType: All
      IsMultiRegionTrail: true
      IncludeGlobalServiceEvents: true
      S3BucketName:
        Ref: S3SharedBucket
      CloudWatchLogsLogGroupArn:
        'Fn::GetAtt':
          - CWLogGroupForCloudTrail
          - Arn
      CloudWatchLogsRoleArn:
        'Fn::GetAtt':
          - IamRoleForCwLogs
          - Arn
    DependsOn:
      - BucketPolicy
  IamRoleForCwLogs:
    Type: 'AWS::IAM::Role'
    Properties:
      RoleName: iamRoleCloudTrailToCloudWatchLogs
      AssumeRolePolicyDocument:
        Version: '2012-10-17'
        Statement:
          - Sid: ''
            Effect: Allow
            Principal:
              Service: cloudtrail.amazonaws.com
            Action: 'sts:AssumeRole'
      Policies:
        - PolicyName: allow-access-to-cw-logs
          PolicyDocument:
            Version: '2012-10-17'
            Statement:
              - Effect: Allow
                Action:
                  - 'logs:CreateLogStream'
                  - 'logs:PutLogEvents'
                Resource: '*'
  CWLogGroupForCloudTrail:
    Type: 'AWS::Logs::LogGroup'
    Properties:
      LogGroupName: CloudTrailLogs
      RetentionInDays: 90
  ConfigurationRecorder:
    Type: 'AWS::Config::ConfigurationRecorder'
    Properties:
      RoleARN:
        'Fn::GetAtt':
          - IamRoleForAwsConfig
          - Arn
      RecordingGroup:
        AllSupported: true
        IncludeGlobalResourceTypes: true
  DeliveryChannel:
    Type: 'AWS::Config::DeliveryChannel'
    Properties:
      S3BucketName:
        Ref: S3SharedBucket
  IamRoleForAwsConfig:
    Type: 'AWS::IAM::Role'
    Properties:
      RoleName: iamRoleForAWSConfig
      ManagedPolicyArns:
        - 'arn:aws:iam::aws:policy/service-role/AWSConfigRole'
      AssumeRolePolicyDocument:
        Version: '2012-10-17'
        Statement:
          - Sid: ''
            Effect: Allow
            Principal:
              Service: config.amazonaws.com
            Action: 'sts:AssumeRole'
      Policies:
        - PolicyName: allow-access-to-config-s3-bucket
          PolicyDocument:
            Version: '2012-10-17'
            Statement:
              - Effect: Allow
                Action:
                  - 's3:PutObject'
                Resource:
                  - 'arn:aws:s3:::/prefix/AWSLogs/*'
                Condition:
                  StringLike:
                    's3:x-amz-acl': bucket-owner-full-control
              - Effect: Allow
                Action:
                  - 's3:GetBucketAcl'
                Resource: 'arn:aws:s3:::'
  GuardDuty:
    Type: 'AWS::GuardDuty::Detector'
    Properties:
      Enable: true
Parameters: {}
Metadata: {}
Conditions: {}