network-security

Zero-trust network policies for GKE are configured by enforcing default-deny ingress and controlled egress rules using Kubernetes Network Policies. This approach restricts lateral traffic movement between multi-service deployments across clusters and projects.

VPC-native IP allocation uses alias IP ranges for scalable pod addressing in GKE. You need it for secure GKE networking because it enables native VPC routing and private connectivity, reducing public exposure risks across multi-service deployments.

Private Service Connect endpoints are set up using Terraform to enable private access to Google Cloud services. This configuration keeps traffic internal to the VPC, preventing GKE clusters from exposing data to the public internet.

Cloud Armor works with GKE by applying rules to provide L7 DDoS and application firewall capabilities. It protects multi-service Kubernetes deployments from web-based attacks and reduces public exposure at the network edge.

The best way to secure multi-service GKE clusters across projects is combining VPC-native networking, zero-trust policies, Private Service Connect, and Cloud Armor using Terraform. This reduces public exposure and risk while enabling private connectivity.