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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Cluster Hardening | 15% | - Minimize admission of privileged containers - Minimize admission of containers with sharing the host process namespace - Minimize admission of containers with raw block devices - Minimize admission of containers with sharing the host IPC namespace - Minimize admission of containers without seccomp profiles - Minimize admission of containers with capabilities assigned - Minimize admission of containers that allow host namespaces - Minimize admission of containers with added capabilities - Minimize admission of containers with sharing the host network namespace - Minimize admission of containers without AppArmor profile - Minimize admission of containers without a security context - Minimize admission of containers with allowPrivilegeEscalation - Minimize admission of containers with FlexVolume volumes - Minimize admission of containers with hostPath volumes |
| Topic 2: Monitoring, Logging, and Runtime Security | 20% | - Minimize the attack surface using container health indicators - Falco - container security monitoring and threat detection - Detect threats at the container level - Audit and detect logs and events for anomalies - Perform behavioral analytics to detect malicious activity - Understand and monitor network traffic |
| Topic 3: Minimize Microservice Vulnerabilities | 20% | - Configure network policies for namespace isolation - Understand the principle of immutable containers - Set appropriate security contexts for pods and containers - Use OPA Gatekeeper to enforce security controls - Use PSP to enforce security controls - Use AppArmor or seccomp profiles to constrain container behavior |
| Topic 4: Cluster Setup | 10% | - Configure TLS certificates and minimum version for etcd - Manage sensitive information in clusters - Use Cis benchmarks to check Kubernetes cluster settings - Use role-based access control (RBAC) to minimize exposure - Use Pod Security Policies to control security-related pod behaviors - Understand the security implications of embedding cloud provider flags - Implement Pod-to-Pod encryption using mTLS or WireGuard |
| Topic 5: System Hardening | 15% | - Understand the concept of OPA (Open Policy Agent) and Gatekeeper - Enable audit logging - Modify host components to improve security - Kernel defaults and parameters using sysctl |
| Topic 6: Supply Chain Security | 20% | - Understand image security scanning and its workflow - Understand the software supply chain best practices - Use image admission controllers to prevent use of untrusted images - Use static analysis tools to detect vulnerabilities - Sign container images and verify signatures - Use distroless images for static workload - Understand the container build process - Minimize base image footprint |
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NEW QUESTION # 25
You are building a highly secure and sensitive Kubernetes cluster. Your architecture includes a separate namespace for running all CI/CD pipeline pods, isolated from the main application namespace. You want to ensure that only authorized users can access secrets in the CI/CD namespace- Describe how you would implement a secure mechanism for managing secrets and limiting access to them within the CI/CD namespace.
Answer:
Explanation:
Solution (Step by Step) :
1. Create a Dedicated Service Account for CI/CD:
- In the CI/CD namespace, create a service account named 'ci-cd-sa'
- This service account will be used only for running CI/CD pipelines.
2. Create a Secret with Restricted Access:
- Use the ' kubectl create secret generic' command to create a new secret in the CI/CD namespace.
- For example, you could use 'kubectl create secret generic my-secret -namespace-ci-cd' to create a secret named 'my- secret
- Use '--type' argument to create secrets of different types such as 'opaque', 'docker-registry' etc.
3. Create a RoleBinding:
- Create a role binding named 'ci-cd-sa-rolebinding' that associates the 'ci-cd-sa' service account with a custom role named 'ci-cd-secret-reader'
- This custom role will only grant access to read tne secrets in tne CI/CD namespace.
- Create a new role for the ci-cd-sa service account to only read the secrets in the namespace.
4. Configure your CI/CD pipeline: - Ensure your CI/CD pipelines are configured to use the 'ci-cd-sa' service account. - Configure your pipeline to access the secrets using the Kubernetes API.
NEW QUESTION # 26
You are deploying a critical application that handles sensitive user dat
a. Your security policy mandates that only specific system calls are allowed for the application container You decide to use seccomp to enforce this policy- Design a seccomp profile that allows only the following system calls: 'read', 'write', 'open', 'close', 'stat', 'fstat' , 'Istat' , 'getpid', 'getuid', 'getgidS , and 'exit_group'.
Answer:
Explanation:
Solution (Step by Step) :
1. Define the Seccomp Profile:
- Create a 'seccomp-json' file with the following content:
2. Apply the Seccomp Profile to the Container: - You can apply the seccomp profile to the container using the 'securitycontext' in your deployment or pod spec - Include the following configuration: - 'securityContext.seccompProfile.type: Locar - 'securitycontextseccompprofile.localsrc: seccomp.json'
3. Test and Verify: - Deploy the application with the seccomp profile. - Run the application and test its functionality- - Verify that the application operates as expected and does not attempt to perform system calls that are not allowed by the seccomp profile. - Use tools like 'straces to monitor the system calls made by the application to confirm that seccomp is enforcing the restrictions.
NEW QUESTION # 27
You are running a web application in a Kubemetes cluster- You want to restrict access to the web application's API endpoints to specific IP addresses. Explain how to implement this using Ingress and NetworkPolicy.
Answer:
Explanation:
Solution (Step by Step) :
1. Create an Ingress Resource:
- Create an 'Ingress' resource that defines the rules for routing traffic to the web application.
- This example allows access to the API endpoints '/api/v1' and /api/v2S from the IP addresses '10.0.0.10' and '192.168.1.1'
- It also allows access to the 'r endpoint from any IP address.
2. Create a NetworkPolicy: - Create a 'NetworkPolicy' resource that enforces the IP address restrictions. - This example allows traffic from the IP addresses '10.0.0.10' and '192.168.1. I' to the web application's service. - You can create a more specific policy for each API endpoint if needed.
3. Apply the Resources: - Apply the 'Ingress' and 'NetworkPolicy' resources using 'kubectl apply' - For example: 'kubectl apply -f web-app-ingress.yaml and 'kubectl apply -f web-app-network-policy.yaml 4. Verify the Configuration: - Access the web application's API endpoints from the allowed IP addresses. - Verity that the requests are successful. - Attempt to access the API endpoints from other IP addresses. - Verify that these attempts are blocked.
NEW QUESTION # 28
Create a network policy named allow-np, that allows pod in the namespace staging to connect to port 80 of other pods in the same namespace.
Ensure that Network Policy:-
1. Does not allow access to pod not listening on port 80.
2. Does not allow access from Pods, not in namespace staging.
Answer:
Explanation:
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
name: network-policy
spec:
podSelector: {} #selects all the pods in the namespace deployed
policyTypes:
- Ingress
ingress:
- ports: #in input traffic allowed only through 80 port only
- protocol: TCP
port: 80
NEW QUESTION # 29
You're working on a Kubernetes cluster where container images are pulled from a private registry. Security best practices dictate that you should configure the cluster to only allow image pulls from authorized registries. Explain how you would enforce this policy using image admission controllers and provide a practical example of an admission control configuration.
Answer:
Explanation:
Solution (Step by Step) :
1. Enable Image Admission Controller:
- Install the Admission Controller. The 'ImagePolicyWebhook' admission controller enforces policies on container images. You can install it as part of your Kubernetes deployment or using a Helm chart.
2. Create a Policy Configuration:
- Define the Policy: Use a YAML file to define the rules for the admission controller. This policy will specify the allowed registries.
- Example Policy Configuration:
3. Configure the Service: - Create a Service: Create a Kubernetes service that exposes the admission controllers endpoint. - Example Service Configuration:
4. Deploy the Policy Engine: - Create a Deployment: Create a Kubernetes deployment to run the policy engine (e.g., a container image with the admission controller logic). - Example Deployment Configuration:
5. Verify the Configuration: - Test Image Pulls: Attempt to pull images from both authorized and unauthorized registries. - Monitor tor Policy Enforcement: Observe the admission controllers logs to confirm that it iS successtully blocking pulls from unauthorized registries. - Validate Security: Ensure that the policy effectively prevents the use of unauthorized container image sources, enhancing the clusters security posture.
NEW QUESTION # 30
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