📝 AWS CloudTrail Security Group Changes Monitoring is not enabled 🟢
- Contextual name: 📝 Security Group Changes Monitoring is not enabled 🟢
- ID:
/ce/ca/aws/cloudtrail/security-group-changes-monitoring - Located in: 📁 AWS CloudTrail
Flags
Our Metadata
- Policy Type:
COMPLIANCE_POLICY - Policy Category:
SECURITY
Similar Policies
- Cloud Conformity
- Internal
dec-x-3cfa5306
Similar Internal Rules
| Rule | Policies | Flags |
|---|---|---|
| ✉️ dec-x-3cfa5306 | 1 |
Description
Description
Real-time monitoring of API calls can be achieved by directing CloudTrail Logs to CloudWatch Logs or an external Security Information and Event Management (SIEM) environment, and establishing corresponding metric filters and alarms.
Security groups are stateful packet filters that control ingress and egress traffic within a VPC.
It is recommended that a metric filter and alarm be established to detect changes to security groups.
Rationale
CloudWatch is an AWS native service that allows you to observe and monitor resources and applications. CloudTrail logs can also be sent to an external Security Information and Event Management (SIEM) environment for monitoring and alerting.
Monitoring changes to security groups will help ensure that resources and services are not unintentionally exposed.
Impact
This may require additional 'tuning' to eliminate false positive and filter out expected activity so anomalies are easier to detect.
Audit
If you are using CloudTrails and CloudWatch, perform the following to ensure that there is at least one active multi-region CloudTrail with prescribed metric filters and alarms configured:
... see more
Remediation
Remediation
If you are using CloudTrails and CloudWatch, perform the following to setup the metric filter, alarm, SNS topic, and subscription:
- Create a metric filter based on filter pattern provided which checks for security groups changes and the
<cloudtrail_log_group_name>taken from audit step 1:aws logs put-metric-filter --log-group-name "<cloudtrail_log_group_name>" --filter-name <security_group_changes_metric> --metric-transformations metricName=<security_group_changes_metric>, metricNamespace="CISBenchmark", metricValue=1 --filter-pattern "{ ($.eventName = AuthorizeSecurityGroupIngress) || ($.eventName = AuthorizeSecurityGroupEgress) || ($.eventName = RevokeSecurityGroupIngress) || ($.eventName = RevokeSecurityGroupEgress) || ($.eventName = CreateSecurityGroup) || ($.eventName = DeleteSecurityGroup) }"Note: You can choose your own metricName and metricNamespace strings. Using the same metricNamespace for all Foundations Benchmark metrics will group them together.
- Create an SNS topic that the alarm will notify:
... see more