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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Supply Chain Security | 20% | - Use static analysis tools to detect vulnerabilities - Understand image security scanning and its workflow - Sign container images and verify signatures - Understand the container build process - Use distroless images for static workload - Use image admission controllers to prevent use of untrusted images - Understand the software supply chain best practices - Minimize base image footprint |
| Topic 2: Cluster Hardening | 15% | - Minimize admission of containers without AppArmor profile - Minimize admission of containers with hostPath volumes - Minimize admission of containers with capabilities assigned - Minimize admission of containers without a security context - Minimize admission of containers with FlexVolume volumes - Minimize admission of containers that allow host namespaces - Minimize admission of containers with sharing the host network namespace - Minimize admission of containers with raw block devices - Minimize admission of containers without seccomp profiles - Minimize admission of privileged containers - Minimize admission of containers with allowPrivilegeEscalation - Minimize admission of containers with sharing the host IPC namespace - Minimize admission of containers with sharing the host process namespace - Minimize admission of containers with added capabilities |
| Topic 3: Minimize Microservice Vulnerabilities | 20% | - Use OPA Gatekeeper to enforce security controls - Set appropriate security contexts for pods and containers - Understand the principle of immutable containers - Configure network policies for namespace isolation - 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 - Use Pod Security Policies to control security-related pod behaviors - Understand the security implications of embedding cloud provider flags - Manage sensitive information in clusters - Use Cis benchmarks to check Kubernetes cluster settings - Implement Pod-to-Pod encryption using mTLS or WireGuard - Use role-based access control (RBAC) to minimize exposure |
| Topic 5: System Hardening | 15% | - Enable audit logging - Modify host components to improve security - Kernel defaults and parameters using sysctl - Understand the concept of OPA (Open Policy Agent) and Gatekeeper |
| Topic 6: Monitoring, Logging, and Runtime Security | 20% | - 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 - Minimize the attack surface using container health indicators - Understand and monitor network traffic |
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NEW QUESTION # 19
SIMULATION
Service is running on port 389 inside the system, find the process-id of the process, and stores the names of all the open-files inside the /candidate/KH77539/files.txt, and also delete the binary.
Answer:
Explanation:
See the Explanation belowExplanation:
root# netstat -ltnup
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name tcp 0 0 127.0.0.1:17600 0.0.0.0:* LISTEN 1293/dropbox tcp 0 0 127.0.0.1:17603 0.0.0.0:* LISTEN 1293/dropbox tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 575/sshd tcp 0 0 127.0.0.1:9393 0.0.0.0:* LISTEN 900/perl tcp 0 0 :::80 :::* LISTEN 9583/docker-proxy tcp 0 0 :::443 :::* LISTEN 9571/docker-proxy udp 0 0 0.0.0.0:68 0.0.0.0:* 8822/dhcpcd
...
root# netstat -ltnup | grep ':22'
tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN 575/sshd
The ss command is the replacement of the netstat command.
Now let's see how to use the ss command to see which process is listening on port 22:
root# ss -ltnup 'sport = :22'
Netid State Recv-Q Send-Q Local Address:Port Peer Address:Port
tcp LISTEN 0 128 0.0.0.0:22 0.0.0.0:* users:("sshd",pid=575,fd=3))
NEW QUESTION # 20
You are tasked with hardening the security of your Kubernetes cluster by following the CIS Kubernetes Benchmark. You need to implement a solution for securing the etcd cluster using a strong encryption at rest configuration. Explain the steps involved, including the configuration changes required in the etcd cluster and any relevant configuration changes in the Kubernetes control plane.
Answer:
Explanation:
Solution (Step by Step) :
1. Generate Encryption Keys:
- Create a strong encryption key using tools like 'openssr or 'gpg'
- For example, using OpenSSL:
bash
openssl genrsa -out etcd-encryption-key.pem 4096
2. Configure etcd:
- Edit tne etcd server configuration file, typically located at' /etc/etcd/etcd.conf' or a similar path depending on your setup.
- Set the '--data-dirs to the directory where you want to store the encrypted etcd data.
- Add the following lines to enable encryption at rest and specify the encryption key:
- Make sure to replace 'path/to:etcd-enctyption-key.pem' with the actual path to the encryption key file. 3. Configure Kubernetes Control Plane: - If using kubeadm, modify the 'kubeadm init or 'kubeadm joins commands to include the path to the encryption key file in tne =etcd.encryption-key' option. For example: bash kubeadm init -etcd.encryption-key=path/to/etcd-encryption-key.pem 4. Restart etcd and Control Plane Components: - Restart the etcd server and the Kubernetes control plane components like 'kube-apiserver and 'kube-controller-manager' to ensure the new configuration is loaded. 5. Verify Encryption: - After restarting the components, verify that the etcd data is encrypted by checking the directory configured as the '-data-dir' in your etcd configuration. You should see encrypted files. 6. Rotate Encryption Keys (Recommended): - For enhanced security, periodically rotate the encryption key. This involves generating a new key, updating the etcd configuration with the new key, and restarting the etcd and control plane components.
NEW QUESTION # 21
SIMULATION
Using the runtime detection tool Falco, Analyse the container behavior for at least 20 seconds, using filters that detect newly spawning and executing processes in a single container of Nginx.
store the incident file art /opt/falco-incident.txt, containing the detected incidents. one per line, in the format
[timestamp],[uid],[processName]
Answer:
Explanation:
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NEW QUESTION # 22
SIMULATION
Task
Analyze and edit the given Dockerfile /home/candidate/KSSC00301/Docker file (based on the ubuntu:16.04 image), fixing two instructions present in the file that are prominent security/best-practice issues.
Analyze and edit the given manifest file /home/candidate/KSSC00301/deployment.yaml, fixing two fields present in the file that are prominent security/best-practice issues.
Answer:
Explanation:
See the Explanation below
Explanation:
NEW QUESTION # 23
Your application requires access to specific network resources, but you want to restrict its communication to only these allowed ports and IP addresses. Explain how to achieve this using AppArmor profiles.
Answer:
Explanation:
Solution (Step by Step) :
1. Define the AppArmor Profile:
- Create an 'apparmor.conf file with the following content:
- This example allows connections to port 80 on the IP address '10.0.0.10' and port 443 on the IP address '192.168.1.1'.
2. Apply the AppArmor Profile to the Container: - You can apply the AppArmor profile to the container using the 'securityContext' in your deployment or pod spec. - Include the following configuration: - 'securityContext.apparmor.profileName: my-app-profile'
3. Load and Enable the Profile: - Use the following command to load the 'apparmor.conf file: - 'sudo apparmor_parser -r Ipath/to/apparmor.conr - Enable the profile for the container. - 'sudo aa-enforce my-app-profile' 4. Test and Verify: - Deploy the application with the AppArmor profile. - Attempt to access the allowed network resources. - Verify that the application can successfully connect to the specified ports and IP addresses. - Attempt to access other network resources that are not allowed. - Verify that the AppArmor profile blocks these attempts.
NEW QUESTION # 24
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