github.com/khulnasoft-lab/defsec@v1.0.5-0.20230827010352-5e9f46893d95/avd_docs/aws/redshift/AVD-AWS-0127/docs.md (about) 1 2 Redshift clusters that are created without subnet details will be created in EC2 classic mode, meaning that they will be outside of a known VPC and running in tennant. 3 4 In order to benefit from the additional security features achieved with using an owned VPC, the subnet should be set. 5 6 ### Impact 7 Redshift cluster does not benefit from VPC security if it is deployed in EC2 classic mode 8 9 <!-- DO NOT CHANGE --> 10 {{ remediationActions }} 11 12 ### Links 13 - https://docs.aws.amazon.com/redshift/latest/mgmt/managing-clusters-vpc.html 14 15