Ensure NACLs do not allow unrestricted SSH access
Network ACLs should not allow SSH (port 22) from 0.0.0.0/0. Use bastion hosts in specific subnets with restricted NACL rules.
Security Impact
Unrestricted SSH in NACLs allows any IP to attempt connections, even if security groups are restrictive.
How to Remediate
Modify NACL rules to restrict port 22 access to specific IP ranges or remove SSH rules entirely if using Session Manager.
Affected Resources
Compliance Frameworks
How TigerGate Helps
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- Drift Detection
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Check Details
- Check ID
- aws-vpc-7
- Service
- Virtual Private Cloud (VPC)
- Category
- Network Security
- Severity
- HIGH
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