Cybersecurity helps organizations to avoid attacks. It also helps to mitigate the risks if an attack occurs. For instance, network segmentation plays a vital role in reducing the risk of a cyber breach by isolating it. Explain the following: What does network segmentation mean; compare it to its flat network counterpart. Mention at least two of the best practices for network segmentation (i.e., what should be considered when segmenting an organization's network)?
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- Identify the type of ethical hacking in the below-mentioned scenario and defend your answer logically. *Scenario*: An XYZ Company decided to divide the penetration testing exercise into two-phase. In phase 1, the organization shared the scope of its public-facing interfaces and IP-addresses. After the completion of phase 1, the organization invited the Pen-tester to its premises and shared the scope of its private network.Chart out two diagrams of networked computers. The first diagram should be a secure network, where all traffic can be checked by a computing device to ensure that it is safe. The second should be a reliable network, where there are many paths for packets to travel so that all packets reach their destination safely and quickly. Then, consider the following questions: What are the differences between these two networks? Do you think that the users of these two different kinds of networks would notice any differences between them? What factors might be affected by the layout of these two networks, and what kinds of tradeoffs to users experience when they choose reliability or security? Can you think of an example of a real-life network you might connect to, and which category it mostly falls into? Consider school internet networks, public Wi-Fi, or cellular data networks as you think of the different ways you connect to various internet networks.The distinction between a network intrusion detection system (NIDS) and a network intrusion prevention system (NIPS) is as follows: NIPS can react to an assault far faster than other types of defenses. Attacks are more useful when they are detected by an NIDS. b Because it makes use of protocol analysis, an NIPS is considerably slower. Due to the fact that NIDS and NIPS are both equal, there is no difference.
- A network security design is necessary to enhance protection and security since servers on a flat network handle the majority of the company's business operations. This is the case since the network is flat. whenever the creation of a demilitarised zone. If you could change anything about the current network's structure, what would it be?A hypothetical scenario where the management of login credentials is necessary could be a large corporation that has multiple departments and employees with varying levels of access to sensitive information. In order to maintain security and prevent unauthorised access, the company would need to implement a system for managing login credentials. This would involve assigning unique usernames and passwords to each employee, as well as establishing protocols for resetting passwords and revoking access when necessary. Additionally, the company may choose to implement two-factor authentication or other security measures to further protect sensitive data. Identify and analyse the different authentication techniques that are currently accessible. Is the utilisation of a password mandatory in all instances?Hackers may attempt to break into a network by switching the source VLAN of the attack traffic with one of the target VLANs. This is done in order to get access to the network. The only way for the offender to be identified is if the normal actions connected with an attack are recognized and investigated. You need to be as specific as possible on the preventative steps that have been taken.
- Because servers on a flat network are responsible for the bulk of the business activities at an organization, it is essential to have a Network Security Design in order to increase protection and security. The flat nature of the network is to blame for this situation. once a demilitarized zone is formed and whenever it is established. How would you alter the structure of the network that is already operational and what would those changes be?Step 2: Write an analysis of a cyberattack. Select one of the high-profile cyberattacks from step 1a and write an analysis of the attack that includes answers to the questions below. Who were the victims of the attacks?Answers will vary based on the cyberattack chosen. What technologies and tools were used in the attack?The answers will vary based on the cyberattack chosen. When did the attack happen within the network?The answers will vary based on the cyberattack chosen. What systems were targeted?The answers will vary based on the cyberattack chosen. What was the motivation of the attackers in this case? What did they hope to achieve?The answers will vary based on the cyberattack chosen. What was the outcome of the attack? (Stolen data, ransom, system damage, etc.)The answers will vary based on the cyberattack chosen.Consider a company whose operations are housed in two buildings on the same property: one building is headquarters, • the other building contains network and computer services. The property is physically protected by a fence around the perimeter. The only entrance to the property is through a guarded front gate. The local networks are split between the Headquarters' LAN and the Network Services' LAN. Internet users connect to the Web server through a firewall. Dial-up users get access to a particular server on the Network Services' LAN. Read Section 1.5 in Chapter 1 and develop an attack tree in which • the root node represents disclosure of proprietary secrets; there are at least 10 nodes; • attacks include physical, social engineering, and technical attacks; both AND and OR nodes may be contained.
- Using the type of cryptographic tunneling protocols (e.g., L2TP, IPSEC, SSL, etc.) which may be used, the layer(s) of the OSI at which each operates, and also recommend how they may be implemented.Consider a company whose operations are housed in two buildings on the same property, one building is headquarters, the other building contains network and computer services. The property is physically protected by a fence around the perimeter. The only entrance to the property is through the fenced perimeter. In addition to the perimeter fence, physical security consists of a guarded front gate. The local networks are split between the Headquarters’ LAN and the Network Services’ LAN. Internet users connect to the Web server through a firewall. Dial-up users get access to a particular server on the Network Services’ LAN. Develop an attack tree in which the root node represents disclosure of proprietary secrets. Include physical, social engineering, and technical attacks. The tree may contain both AND and OR nodes. Develop a tree that has at least 15 leaf nodes.Because servers on a flat network are responsible for the bulk of an organization's business operations, that organisation needs a Network Security Design in order to increase the level of protection and security it provides. The possibility exists that a demilitarised zone will be constructed. What modifications would you propose to the existing structure of the network?