Ensure NACLs do not allow unrestricted RDP access
Network ACLs should not allow RDP (port 3389) from 0.0.0.0/0 to prevent brute force and exploitation attempts.
Security Impact
Unrestricted RDP in NACLs exposes Windows instances to network-level attacks before security groups are evaluated.
How to Remediate
Modify NACL rules to restrict port 3389 access to VPN IP ranges or remove RDP rules if using Session Manager.
Affected Resources
Compliance Frameworks
How TigerGate Helps
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Check Details
- Check ID
- aws-vpc-8
- Service
- Virtual Private Cloud (VPC)
- Category
- Network Security
- Severity
- HIGH
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