ECCouncil 212-82 Practice Test - Questions Answers, Page 7

Non-routing dual-homed hosts are the type of bastion hosts configured by Elliott in the above scenario. A bastion host is a system or device that is exposed to the public internet and acts as a gateway or a proxy for other systems or networks behind it. A bastion host can be used to provide an additional layer of security and protection for internal systems or networks from external threats and attacks . A bastion host can have different types based on its configuration or functionality. A nonrouting dual-homed host is a type of bastion host that has two network interfaces: one connected to the public internet and one connected to the internal network. A non-routing dual-homed host does not allow any direct communication between the two networks and only allows specific services or applications to pass through it . A non-routing dual-homed host can be used to isolate and secure internal systems or networks from external access . In the scenario, Elliott was appointed to test a newly developed application deployed over an organizational network using a bastion host. Elliott initiated the process by configuring the non-reusable bastion host. He then tested the newly developed application to identify the presence of security flaws that were not yet known; further, he executed services that were not secure. This means that he configured a non-routing dual-homed host for this purpose. An external services host is a type of bastion host that provides external services, such as web, email, FTP, etc., to the public internet while protecting internal systems or networks from direct access . A victim machine is not a type of bastion host, but a term that describes a system or device that has been compromised or infected by an attacker or malware . A one-box firewall is not a type of bastion host, but a term that describes a firewall that performs both packet filtering and application proxy functions in one device .

Managing and maintaining is the phase of firewall implementation and deployment in which Elliott monitored the firewall logs in the above scenario. A firewall is a system or device that controls and filters the incoming and outgoing traffic between different networks or systems based on predefined rules or policies. A firewall can be used to protect a network or system from unauthorized access, use, disclosure, modification, or destruction . Firewall implementation and deployment is a process that involves planning, installing, configuring, testing, managing, and maintaining firewalls in a network or system . Managing and maintaining is the phase of firewall implementation and deployment that involves monitoring and reviewing the performance and effectiveness of firewalls over time . Managing and maintaining can include tasks such as updating firewall rules or policies, analyzing firewall logs , detecting evolving threats or attacks , ensuring firewall security , addressing network issues , etc. In the scenario, Elliott was tasked with implementing and deploying firewalls in the corporate network of an organization. After planning and deploying firewalls in the network, Elliott monitored the firewall logs to detect evolving threats and attacks; this helped in ensuring firewall security and addressing network issues beforehand. This means that he performed managing and maintaining phase for this purpose. Deploying is the phase of firewall implementation and deployment that involves installing and activating firewalls in the network or system according to the plan. Testing is the phase of firewall implementation and deployment that involves verifying and validating the functionality and security of firewalls before putting them into operation. Configuring is the phase of firewall implementation and deployment that involves setting up and customizing firewalls according to the requirements and specifications.

Dashboard is the SIEM function that allowed Camden to view suspicious behavior and make correct decisions during a security incident. SIEM (Security Information and Event Management) is a system or software that collects, analyzes, and correlates security data from various sources, such as logs, alerts, events, etc., and provides a centralized view and management of the security posture of a network or system. SIEM can be used to detect, prevent, or respond to security incidents or threats. SIEM consists of various functions or components that perform different tasks or roles. Dashboard is a SIEM function that provides a graphical user interface (GUI) that displays various security metrics, indicators, alerts, reports, etc., in an organized and interactive manner. Dashboard can be used to view suspicious behavior and make correct decisions during a security incident. In the scenario, Camden monitored the behavior of the organizational network using SIEM from a control room. The SIEM detected suspicious activity and sent an alert to Camden. Based on the severity of the incident displayed on the screen, Camden made the correct decision and immediately launched defensive actions to prevent further exploitation by attackers. This means that he used the dashboard function of SIEM for this purpose. Application log monitoring is a SIEM function that collects and analyzes application logs, which are records of events or activities that occur within an application or software. Log retention is an SIEM function that stores and preserves logs for a certain period of time or indefinitely for future reference or analysis. Data aggregation is an SIEM function that combines and normalizes data from different sources into a common format or structure.

Purple team is the team that Alex works for in this scenario. A team is a group of people that work together to achieve a common goal or objective. A team can have different types based on its role or function in an organization or a project. A purple team is a type of team that works for both aggressor and defender teams. A purple team can be used to enhance protection and boost the security standards of an organization by performing various tasks, such as testing, evaluating, improving, or integrating the security measures implemented by the defender team or exploited by the aggressor team. In the scenario, Alex is a certified security professional who works for both aggressor and defender teams. His team's main responsibility involves enhancing protection and boosting the security standards of the organization. This means that he works for a purple team. A white team is a type of team that acts as an observer or an arbitrator between the aggressor and defender teams. A white team can be used to monitor, evaluate, or adjudicate the performance or outcome of the aggressor and defender teams by providing feedback, guidance, or rules. A blue team is a type of team that acts as a defender or a protector of an organization's network or system.

A blue team can be used to prevent, detect, or respond to attacks from external or internal threats by implementing various security measures, such as firewalls, antivirus, encryption, etc. A red team is a type of team that acts as an attacker or an adversary of an organization's network or system. A red team can be used to simulate realistic attacks from external or internal threats by exploiting various vulnerabilities, weaknesses, or gaps in the organization's security posture.

Stuxnet is the malware signature of the suspicious file in the above scenario. Malware is malicious software that can harm or compromise the security or functionality of a system or network. Malware can include various types, such as viruses, worms, trojans, ransomware, spyware, etc. Malware signature is a unique pattern or characteristic that identifies a specific malware or malware family.

Malware signature can be used to detect or analyze malware by comparing it with known malware signatures in databases or repositories. To analyze the suspicious file and identify the malware signature, one has to follow these steps:

Navigate to Documents folder of Attacker Machine-1.

Right-click on security_update.exe file and select Scan with VirusTotal option.

Wait for VirusTotal to scan the file and display the results.

Observe the detection ratio and details.

The detection ratio is 59/70, which means that 59 out of 70 antivirus engines detected the file as malicious. The details show that most antivirus engines detected the file as Stuxnet, which is a malware signature of a worm that targets industrial control systems (ICS). Stuxnet can be used to sabotage or damage ICS by modifying their code or behavior. Therefore, Stuxnet is the malware signature of the suspicious file. KLEZ is a malware signature of a worm that spreads via email and network shares. KLEZ can be used to infect or overwrite files, disable antivirus software, or display fake messages. ZEUS is a malware signature of a trojan that targets banking and financial systems.

ZEUS can be used to steal or modify banking credentials, perform fraudulent transactions, or install other malware. Conficker is a malware signature of a worm that exploits a vulnerability in Windows operating systems. Conficker can be used to create a botnet, disable security services, or download other malware

The attacker is a user from the image file in the above scenario. A file system is a method or structure that organizes and stores files and data on a storage device, such as a hard disk, a flash drive, etc. A file system can have different types based on its format or features, such as FAT, NTFS, ext4, etc. A file system can be analyzed to extract various information, such as file names, sizes, dates, contents, etc. A Linux image is an image file that contains a copy or a snapshot of a Linux-based file system . A Linux image can be analyzed to extract various information about a Linux-based system or device . To analyze the file system of a Linux image captured from a device that has been attacked recently and identify a user from the image file, one has to follow these steps:

Navigate to Documents folder of Attacker Machine-1.

Right-click on Evidenced.img file and select Mount option.

Wait for the image file to be mounted and assigned a drive letter.

Open File Explorer and navigate to the mounted drive.

Open etc folder and open passwd file with a text editor.

Observe the user accounts listed in the file.

The user accounts listed in the file are:

root:x:0:0:root:/root:/bin/bash daemon:x:1:1:daemon:/usr/sbin:/usr/sbin/nologin

bin:x:2:2:bin:/bin:/usr/sbin/nologin sys:x:3:3:sys:/dev:/usr/sbin/nologin

sync:x:4:65534:sync:/bin:/bin/sync games:x:5:60:games:/usr/games:/usr/sbin/nologin

man:x:6:12:man:/var/cache/man:/usr/sbin/nologin lp:x:7:7:lp:/var/spool/lpd:/usr/sbin/nologin

mail:x:8:8:mail:/var/mail:/usr/sbin/nologin news:x:9:9:news:/var/spool/news:/usr/sbin/nologin

uucp:x:10:10:uucp:/var/spool/uucp:/usr/sbin/nologin proxy:x:13:13:proxy:/bin:/usr/sbin/nologin

www-data:x:33:33:www-data:/var/www:/usr/sbin/nologin

backup:x:34:34:backup:/var/backups:/usr/sbin/nologin list:x:38:38:Mailing List

Manager:/var/list:/usr/sbin/nologin irc:x:39:39:ircd:/var/run/ircd:/usr/sbin/nologin

gnats:x:41:41:Gnats Bug-Reporting System (admin):/var/lib/gnats:/usr/sbin/nologin

nobody:x:65534:65534:nobody:/nonexistent:/usr/sbin/nologin systemd-timesync:x:100: systemdnetwork:

x: systemd-resolve:x: systemd-bus-proxy:x: syslog:x: _apt:x: messagebus:x: uuidd:x:

lightdm:x: whoopsie:x: avahi-autoipd:x: avahi:x: dnsmasq:x: colord:x: speech-dispatcher:x: hplip:x:

kernoops:x: saned:x: nm-openvpn:x: nm-openconnect:x: pulse:x: rtkit:x: sshd:x: attacker::1000

The user account that is not a system or service account is attacker, which is a user from the image file.

Risk and impact analysis is the threat-modeling step in which Martin evaluated the severity level of the threat in the above scenario. Threat modeling is a process that involves identifying, analyzing, and mitigating threats and risks to a system or network. Threat modeling can be used to improve the security and resilience of a system or network by applying various methods or techniques, such as STRIDE, DREAD, PASTA, etc. Threat modeling consists of various steps or phases that perform different tasks or roles. Risk and impact analysis is a threat-modeling step that involves assessing the likelihood and consequences of threats and risks to a system or network . Risk and impact analysis can be used to evaluate the severity level of threats and risks and prioritize them for mitigation . In the scenario, Martin received breaching alerts for an application. He identified that a vulnerability in the application allowed attackers to enter malicious input. Martin evaluated the threat severity and extent of damage that could be caused by this vulnerability. He then escalated the issue to the security management team to determine appropriate mitigation strategies. This means that he performed risk and impact analysis for this purpose. Identify vulnerabilities is a threat-modeling step that involves finding and documenting the weaknesses or flaws in a system or network that can be exploited by threats or risks . Application overview is a threat-modeling step that involves defining and understanding the scope, architecture, components, and functionality of a system or network .

Decompose the application is a threat-modeling step that involves breaking down a system or network into smaller and simpler elements, such as data flows, processes, assets, etc.

Testing is the tier of the secure application development lifecycle that involves checking the application performance in the above scenario. Secure application development is a process that involves designing, developing, deploying, and maintaining software applications that are secure and resilient to threats and attacks. Secure application development can be based on various models or frameworks, such as SDLC (Software Development Life Cycle), OWASP (Open Web Application Security Project), etc. Secure application development consists of various tiers or stages that perform different tasks or roles. Testing is a tier of the secure application development lifecycle that involves verifying and validating the functionality and security of software applications before releasing them to end users. Testing can include various types of tests, such as unit testing, integration testing, system testing, performance testing, security testing, etc. Testing can be used to check the application performance and identify any errors, bugs, or vulnerabilities in the software applications.

In the scenario, a software company develops new software products by following the best practices for secure application development. Dawson, a software analyst, is responsible for checking the performance of applications in the client's network to determine any issue faced by end users while accessing the application. This means that he performs testing for this purpose. Development is a tier of the secure application development lifecycle that involves creating and coding software applications according to the design and specifications. Staging is a tier of the secure application development lifecycle that involves deploying software applications to a simulated or pre-production environment for testing or evaluation purposes. Quality assurance (QA) is a tier of the secure application development lifecycle that involves ensuring that software applications meet the quality standards and expectations of end users and stakeholders

Private cloud is the type of cloud deployment model that the company implemented in this scenario.

Cloud computing is a model that provides on-demand access to shared and scalable computing resources, such as servers, storage, networks, applications, etc., over the internet or a network. Cloud computing can have different types based on its service or deployment model. A cloud deployment model defines how and where the cloud infrastructure and services are hosted and accessed . A cloud deployment model can have different types, such as public cloud, private cloud, hybrid cloud, community cloud, etc. A private cloud is a type of cloud deployment model that provides exclusive access to cloud infrastructure and services to a single organization or entity . A private cloud can be hosted within or outside the organization's premises and managed by the organization or a third-party provider . A private cloud can be used to secure sensitive data from external access and maintain full control over the corporate data . In the scenario, the company decided to implement the cloud infrastructure within its corporate firewall to secure sensitive data from external access. The company invested heavily in creating a cloud architecture within its premises to manage full control over its corporate data. This means that the company implemented a private cloud for this purpose. A multi-cloud is not a type of cloud deployment model, but a term that describes a strategy that uses multiple public or private clouds from different providers for different purposes or functions . A public cloud is a type of cloud deployment model that provides open access to cloud infrastructure and services to multiple organizations or entities over the internet . A public cloud can be hosted and managed by a third-party provider that owns and operates the cloud infrastructure and services . A community cloud is a type of cloud deployment model that provides shared access to cloud infrastructure and services to multiple organizations or entities that have common interests or goals