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ISC2 Systems Security Certified Practitioner (SSCP) Practice Question

As part of migrating a three-tier application to AWS, your security team mandates a zero trust approach for all east-west traffic. Microservices in an Amazon EKS cluster will call legacy services over an AWS Site-to-Site VPN to the on-prem data center. Which solution best meets zero trust principles while keeping operational overhead low?

  • Deploy a stateful firewall in front of the VPN termination and create rules for each required application port.

  • Enforce mutual TLS between EKS pods and on-prem APIs using certificates issued by a private PKI integrated with AWS Private CA.

  • Restrict VPC CIDR blocks using network ACLs and allow traffic only from the on-prem IP range.

  • Use a single shared IAM role assumed by all microservices to authenticate to on-prem services via Kerberos.

ISC2 Systems Security Certified Practitioner (SSCP)
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