Policy: GCP > CIS v5.0 > 3 - Networking > 3.12 - Use Identity Aware Proxy (IAP) to Ensure Only Traffic From Google IP Addresses are 'Allowed' > Attestation

By setting this policy, you attest that you have manually verified that it complies with the relevant section of the CIS Benchmark.

From Google Cloud Console

If apps that have IAP enabled run in this VPC network:

1. Go to VPC network > Firewall rules and review the rules for this network. 2. Verify that the only ingress allow rules use these values: - Targets: All instances in the network - Source IP ranges: IAP proxy 35.235.240.0/20 and Google health checks 130.211.0.0/22 and 35.191.0.0/16 - Protocols and ports: only the specific protocols and ports the app and its load balancer health checks need (for example tcp:80 and tcp:443)

Once verified, enter the date that this attestation expires. Note that the date can not be further in the future than is specified in GCP > CIS v5.0 > 3 - Networking > Maximum Attestation Duration, which by default follows GCP > CIS v5.0 > Maximum Attestation Duration. Set to a blank value to clear the attestation.