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GCP Threats
Load Balancers Regional Backend Services Should Use Secure Listeners
More Info:
Load Balancers regional backend services should use only the secure listeners. A listener is a process that checks for connection requests, using the protocol and port that you configure.
Risk Level
High
Address
Security
Compliance Standards
SOC2
Triage and Remediation
Remediation
Sure! Here are the step-by-step instructions to remediate the misconfiguration “Load Balancers Regional Backend Services Should Use Secure Listeners” for GCP using the GCP console:
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Open the GCP console and navigate to the Load Balancing section.
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Select the load balancer for which you want to remediate the misconfiguration.
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Click on the “Backend Services” tab.
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Select the backend service for which you want to enable secure listeners.
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Click on the “Edit” button at the top of the page.
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In the “Backend Configuration” section, click on the “Add backend” button.
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Select the protocol you want to use for the secure listener (HTTPS or SSL).
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Set the port number for the secure listener.
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Select the appropriate certificate from the drop-down menu.
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Click on the “Create” button.
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Click on the “Save” button to save the changes.
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Repeat the above steps for all the backend services that are part of the load balancer.
Once you have completed the above steps, your load balancer will be configured to use secure listeners for all the regional backend services. This will help to ensure that your applications are protected against potential security threats.
To remediate the misconfiguration “Load Balancers Regional Backend Services Should Use Secure Listeners” for GCP using GCP CLI, follow the below steps:
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Open the Cloud Shell in the GCP console.
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Run the following command to list all the regional backend services:
gcloud compute backend-services list --filter=loadBalancingScheme=INTERNAL_SELF_MANAGED -
Identify the backend service that needs to be updated and note down its name.
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Run the following command to update the backend service to use secure listeners:
gcloud compute backend-services update [BACKEND_SERVICE_NAME] --global-ssl-certificates [SSL_CERTIFICATE_NAME]Replace
[BACKEND_SERVICE_NAME]with the name of the backend service identified in step 3, and[SSL_CERTIFICATE_NAME]with the name of the SSL certificate that needs to be used.Note: If you don’t have an SSL certificate, you can create one using the following command:
gcloud compute ssl-certificates create [SSL_CERTIFICATE_NAME] --description "SSL certificate for backend service" --domains [DOMAIN_NAME]Replace
[SSL_CERTIFICATE_NAME]with a name for the SSL certificate, and[DOMAIN_NAME]with the domain name for which the SSL certificate needs to be created. -
Once the backend service is updated with the secure listeners, run the following command to verify the changes:
gcloud compute backend-services describe [BACKEND_SERVICE_NAME]This will display the updated backend service configuration, including the secure listeners.
By following the above steps, you can remediate the misconfiguration “Load Balancers Regional Backend Services Should Use Secure Listeners” for GCP using GCP CLI.
To remediate the misconfiguration “Load Balancers Regional Backend Services Should Use Secure Listeners” for GCP using Python, you can follow the below steps:
- Install the required libraries:
pip install google-cloud-load-balancer
- Import the necessary libraries:
from google.cloud import load_balancer_v1
from google.protobuf import field_mask_pb2
- Set up the client:
client = load_balancer_v1.LoadBalancerClient()
- Get the existing backend services:
project_id = "your-project-id"
region = "us-central1"
parent = client.region_path(project_id, region)
backend_services = client.list_region_backend_services(parent=parent)
- Loop through each backend service and update it to use secure listeners:
for backend_service in backend_services:
backend_service_name = backend_service.name
backend_service_url_map = backend_service.url_map
backend_service_protocol = backend_service.protocol
if backend_service_protocol == "HTTP":
backend_service.protocol = "HTTPS"
update_mask = field_mask_pb2.FieldMask(paths=["protocol"])
client.update_region_backend_service(
backend_service=backend_service,
update_mask=update_mask,
)
- Verify that the backend services have been updated:
backend_services = client.list_region_backend_services(parent=parent)
for backend_service in backend_services:
backend_service_name = backend_service.name
backend_service_protocol = backend_service.protocol
print(f"Backend Service {backend_service_name} protocol: {backend_service_protocol}")
This code will update all backend services in the specified GCP project and region to use secure listeners.