Download Network Defense Essentials Exam.112-51.VCEDumps.2024-04-09.56q.vcex

A firewall is a software or a hardware device on a network or host that filters the incoming and outgoing traffic to prevent unauthorized access to private networks. A firewall can use various criteria, such as IP addresses, ports, protocols, or application rules, to allow or deny the traffic. A firewall can also perform other functions, such as logging, auditing, encryption, or proxy services. A firewall can be deployed at different levels of a network, such as network perimeter, network segment, or host level12.Reference: Network Defense Essentials - EC-Council Learning, Firewall (computing) - Wikipedia

A VPN protocol is a component of VPN that is used to manage tunnels and encapsulate private data. A VPN protocol defines the rules and standards for establishing and maintaining a secure connection between the VPN client and the VPN server. A VPN protocol also specifies how the data is encrypted, authenticated, and transmitted over the tunnel. Some common VPN protocols are IPSec, SSL/TLS, PPTP, L2TP, and OpenVPN12.Reference: Network Defense Essentials - EC-Council Learning, VPN Protocols Explained & Compared: OpenVPN, IPSec, PPTP, IKEv2

Containerization is a practice that helps security professionals protect mobile applications from various attacks. Containerization is a technique that isolates critical corporate data from the rest of the device data and applications. Containerization creates a secure and encrypted environment on the device where the corporate data and applications can be accessed and managed. This way, containerization prevents unauthorized access, data leakage, malware infection, or device theft from compromising the corporate data and applications12.Reference: Network Defense Essentials - EC-Council Learning, Mobile Application Security: Containerization vs. App Wrapping vs. SDK

The communication layer of IoT architecture employs protocols and networks for connecting, sending, and receiving data between devices and network. The communication layer is responsible for enabling data exchange among the IoT devices and the cloud or other devices. The communication layer can use various types of networks, such as wired, wireless, cellular, or satellite, and various types of protocols, such as TCP/IP, MQTT, CoAP, or ZigBee12.Reference: Network Defense Essentials - EC-Council Learning, IoT Architecture: The 4 Layers of an IoT System

The type of cloudThe type of cloud service requested by Cibel.org in the above scenario is Platform-as-a-service (PaaS). PaaS is a cloud-based service that delivers a range of developer tools and deployment capabilities. PaaS provides a complete, ready-to-use, cloud-hosted platform for developing, running, maintaining and managing applications. PaaS customers do not need to install, configure, or manage the underlying infrastructure, such as servers, storage, network, or operating system. Instead, they can focus on the application development and deployment process, using the tools and services provided by the cloud service provider. PaaS solutions support cloud-native development technologies, such as microservices, containers, Kubernetes, serverless computing, that enable developers to build once, then deploy and manage consistently across private cloud, public cloud and onpremises environments. PaaS also offers features such as scalability, availability, security, backup, and monitoring for the applications.PaaS is suitable for organizations that want to develop customized applications without investing in or maintaining the infrastructure123.Reference:Network Defense Essentials Courseware, EC-Council, 2020, pp. 3-40 to 3-41What is PaaS? A Beginner's Guide to Platform as a Service - G2, G2, February 19, 2020Cloud Service Models Explained: SaaS, IaaS, PaaS, FaaS - Jelvix, Jelvix, July 14, 2020

The PKI component that verified Ben as being legitimate to receive the certificate is the registration authority (RA). An RA is an entity that is responsible for identifying and authenticating certificate applicants, approving or rejecting certificate applications, and initiating certificate revocations or suspensions under certain circumstances. An RA acts as an intermediary between the certificate authority (CA) and the certificate applicant, and performs the necessary checks and validations before forwarding the request to the CA. The CA is the entity that signs and issues the certificates, and maintains the certificate directory and the certificate revocation list. A certificate directory is a repository of issued certificates that can be accessed by users or applications to verify the validity and status of a certificate. A validation authority (VA) is an entity that provides online certificate validation services, such as OCSP or SCVP, to verify the revocation status of a certificate in real time123.Reference:Public key infrastructure - Wikipedia, Wikipedia, March 16, 2021Components of a PKI - The National Cyber Security Centre, NCSC, 2020Network Defense Essentials Courseware, EC-Council, 2020, pp. 3-26 to 3-27

Denial-of-service (DoS) is the category of suspicious traffic signature that George identified in the above scenario. DoS signatures are designed to detect attempts to disrupt or degrade the availability or performance of a system or network by overwhelming it with excessive or malformed traffic. SYN flood and ping of death are examples of DoS attacks that exploit the TCP/IP protocol to consume the resources or crash the target server. A SYN flood attack sends a large number of TCP SYN packets to the target server, without completing the three-way handshake, thus creating a backlog of half-open connections that exhaust the server's memory or bandwidth. A ping of death attack sends a malformed ICMP echo request packet that exceeds the maximum size allowed by the IP protocol, thus causing the target server to crash or reboot. DoS attacks can cause serious damage to the organization's reputation, productivity, and revenue, and should be detected and mitigated as soon as possible123.Reference:Network Defense Essentials Courseware, EC-Council, 2020, pp. 3-33 to 3-34What is a denial-of-service attack?, Cloudflare, 2020Denial-of-service attack - Wikipedia, Wikipedia, March 16, 2021

The loT communication model that serves as an analyzer for a company to track monthly or yearly energy consumption is the device-to-cloud model. The device-to-cloud model is a loT communication model where the loT devices, such as smart meters, sensors, or thermostats, send data directly to the cloud platform, such as AWS, Azure, or Google Cloud, over the internet. The cloud platform then processes, analyzes, and stores the data, and provides feedback, control, or visualization to the users or applications. The device-to-cloud model enables the company to monitor and optimize the energy consumption of the loT devices in real time, and to leverage the cloud services, such as machine learning, big data analytics, or artificial intelligence, to perform advanced energy management and demand response. The device-to-cloud model also reduces the complexity and cost of the loT infrastructure, as it does not require intermediate gateways or servers to connect the loT devices to the cloud123.Reference:Network Defense Essentials Courseware, EC-Council, 2020, pp. 3-38 to 3-39loT Communication Models: Device-to-Device, Device-to-Cloud, Device-to-Gateway, and Back-End Data-Sharing, DZone, July 9, 2018loT Communication Models: Device-to-Device, Device-to-Cloud, Device-to-Gateway, and Back-End Data-Sharing, Medium, March 26, 2019

Sharing confidential data on an unsecured network is a security risk associated with mobile usage policies. Mobile devices are often used to access and transmit sensitive information over public or untrusted networks, such as WiFi hotspots, cellular networks, or Bluetooth connections. This exposes the data to interception, modification, or redirection by malicious actors who may exploit mobile security vulnerabilities or use network-based attacks, such as man-in-the-middle, spoofing, or sniffing. To prevent this risk, mobile users should follow best practices such as using encryption, VPN, certificate pinning, and secure protocols to protect the data in transit.They should also avoid sending or receiving sensitive data over unsecured networks or applications, and verify the identity and integrity of the endpoint servers before establishing a connection.Reference:The 9 Most Common Security Threats to Mobile Devices in 2021, Auth0, June 25, 20217 Mobile App Security Risks and How to Mitigate Them, Cypress Data Defense, July 10, 2020The Latest Mobile Security Threats and How to Prevent Them, Security Intelligence, February 19, 2019