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Topic: Computer Network Security (Computer Science Course)

Introduction to Computer Network Security Assignment Services

Computer network security


Network security is important for home networks as well as in the business world. Most homes with high-speed internet connections have one or more wireless routers, which could be exploited if not properly secured. A solid network security system helps reduce the risk of data loss, theft and sabotage.

Computer Network security allows you to take preventive measures to help protect the networking infrastructure from malfunction, misuse, destruction, modification, unauthorized access, etc. While you are uploading your data on the internet and thinking it is safe and secure, attackers can breach this data and leak confidential information or steal money. This is why it is necessary to secure your network. Network security, is an important part of cyber security and, helps in protecting your network and data stored in it from breaches, software and hardware intrusion, and more. Network security defines a set of important rules, regulations, and configurations based on threats, network use, accessibility, and complete threat security.


Network security is a set of technologies that protects the usability and integrity of a company's infrastructure by preventing the entry or proliferation within a network of a wide variety of potential threats. Network Security refers to the measures taken by any enterprise or organization to secure its computer network and data using both hardware and software systems. This aims at securing the confidentiality and accessibility of the data and network. Every company or organization that handles a large amount of data, has a degree of solutions against many cyber threats.

The goal of IT security is to protect these assets, devices and services from being disrupted, stolen or exploited by unauthorized users, otherwise known as threat actors. These threats can be external or internal and malicious or accidental in both origin and nature.

Types of computer network security:

  • Firewalls: Firewalls are services or devices that act as guards responsible for deciding which web page, pop up, and other services enter and exit a network. These firewalls use a predefined set of rules that assist in blocking or allowing traffic, depending on the requirements. Firewalls can be for software, hardware, or both, depending on the needs of the system.
  • Access control: Access control allows companies to prevent potential attackers from invading confidential information and to block unauthorized devices and users from accessing the given network. This allows only those users to access the network who are permitted to work with the given resources.
  • Virtual private networks (VPN): A VPN generally uses the internet to encrypt the connection between an endpoint device and a network. Further, VPN allows professionals to authenticate the communication between the network and the device. This results in building an encrypted and secure tunnel via the internet.
  • Wireless Security: Wired networks are not as secure as wireless networks. It is necessary for you to control the devices and users that can access your company’s network. Hence, it is important for you to have wireless security, especially when cybercriminals are rapidly targeting confidential information for extortion.
  • Application Security: Application security involves a set of software, hardware, and processes that track and lock the weak points of an application to be easily be targeted by attackers to infiltrate your network.

Network security tools: Wireshark, Nessus, Snort, Netcat, Metasploit, Aircrack and BackTrack.

Network security attack:

Network security attack is malicious attempts that are carried out by cybercriminals to compromise the security of a network. These attacks are the reasons why there is a great need for network security. Network security is responsible for preventing these attacks on the network infrastructure.

Types of attack:

  • Virus: It is a malicious file that is downloadable, and once opened by a user, it starts to replace the codes in the computer with its own set of codes. On spreading, the system files in the computer will be corrupted, which can result in the corruption of the files.
  • Malware: It is among the severe-most and fastest types of malicious attacks that help gain unauthorized access to a system or network of systems. Malware is generally self-replicating, i.e., once a system is corrupted, malware gains entry through the internet and easily corrupts all computer systems that are connected to the network via the internet.
  • Worm: It enters a given system without the need of a user. If a user is running an application that is not too strong, any attacker or hacker using the same internet connection can easily send malware to that app. Without the knowledge of the user, the application could accept and execute this malware over the internet, leading to the creation of a worm.
  • Botnet: It is a malicious software that attacks a set of computers connected through a private network. The attacker gains access and controls all the systems on that network without the knowledge of the owner. All the computers on that network are referred to as zombies that spread and corrupt a large number of devices as per the instructions of the attacker.

Computer and network security question & answer:

Question 1: What is DOS?

Answer: DOS is known as denial of service. This attack is capable of destroying the users’ networks partially or completely. DoS can also attack even a complete IT infrastructure, making it unavailable to the actual users. 

Question 2: What is network security architecture?

Answer: Cybersecurity architecture, also known as network security architecture, is the practice of designing computer systems to assure the security of your underlying data. Generally speaking, cybersecurity architecture is at the foundation of your organization's defence against security threats.

Question 3: What are the 5 reasons to network security problems?

Answer: 5 Common Network Security Problems and Solutions

  1. Unknown Assets on the Network.
  2. Abuse of User Account Privileges.
  3. Unpatched Security Vulnerabilities.
  4. A Lack of Defence in Depth.
  5. Not Enough IT Security Management.




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