Ensure metric filters exist for NACL changes
CloudWatch metric filters should detect Network ACL changes that affect subnet-level traffic filtering.
Security Impact
NACL changes can allow or block traffic at the subnet level, bypassing security group restrictions.
How to Remediate
Create metric filter for NACL events: CreateNetworkAcl, DeleteNetworkAcl, CreateNetworkAclEntry, DeleteNetworkAclEntry.
Affected Resources
Compliance Frameworks
How TigerGate Helps
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- Continuous Scanning
Automatically scans all AWS CloudTrail resources across your AWS accounts every hour
- Instant Alerts
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- One-Click Remediation
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- Compliance Evidence
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- Drift Detection
Get alerted if this configuration drifts back to an insecure state after remediation
Check Details
- Check ID
- aws-cloudtrail-22
- Service
- AWS CloudTrail
- Category
- Monitoring
- Severity
- MEDIUM
- CIS Benchmark
- 4.11
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