Network Security Threats and Defence Mechanisms

Network Security Threats

Assignment title:

Network Security Threats and Defence for a Small/Medium Enterprise

Spring 2023 – Winter 2024

Important notes
• Please refer to the Assignment Presentation Requirements for advice on how to set out your assignment. These can be found on the NCC Education website. Click on ‘Policies and Procedures’ on the main menu and then navigate to ‘Student Support’.
• You must read the NCC Education document Academic Misconduct Policy and ensure that you acknowledge all the sources that you use in your work. These documents are available on the NCC Education website. Click on ‘Policies and Procedures’ on the main menu and then navigate to ‘Student Support’.
• You must complete the Statement and Confirmation of Own Work. The form is available on the NCC Education website. Click on ‘Policies and Procedures’ on the main menu and then navigate to ‘Student Support’.
• Please make a note of the recommended word count. You could lose marks if you write 10% more or less than this.
• You must submit a paper copy and digital copy (on disk or similarly acceptable medium). Media containing viruses, or
media that cannot be run directly, will result in a fail grade being awarded for this assessment.
• All electronic media will be checked for plagiarism.


The purpose of this assignment is to assess your knowledge of computer networks and security. You should read the following scenario carefully and provide a written response to the FOUR (4) tasks. Where you need to make any assumptions, you should state them clearly in your answer.


A small travel agency in a town has a LAN similar to the image below. Their head office is located in London.

Fig.1 Travel Agency LAN Structure

They recently experienced some security issues and the following incidents:

  • On a Monday morning, the organisation’s help desk received calls from three users on the same floor of a building who stated that they were having problems with their wireless access. A network administrator who was asked to assist in resolving the problem took a laptop with wireless access to the users’ floor. As he viewed his wireless networking configuration, he noticed that there was a new access point listed as being available. He checked with his teammates and determined that this access point was not deployed by his team, so that it is most likely a rogue access point that was established without permission. They later discovered that network traffic has been accessed and analysed by the attacker.
  • On a Saturday afternoon, external users started having problems accessing the organisation’s public websites. Over the next hour, the problems worsened to the point where nearly every access attempt failed. Meanwhile, a member of the organisation’s networking staff responded to alerts from an Internet border router and determined that the organisation’s Internet bandwidth was being consumed by an unusually large volume of User Datagram Protocol (UDP) packets to and from both of the organisation’s public DNS servers. Analysis of the traffic showed that the DNS servers were receiving high volumes of requests from a single external IP address. Also, all the DNS requests from that address came from the same source port.

Details of the Tasks

Each task outlines and examines your knowledge and understanding of the unit outcomes. As the network administrator of this organisation, you will need to have proper understanding of the structure and architecture of the organisation’s LAN, also you need to understand and have knowledge of the security incidents that have happened and propose solutions for them.

Task 1 (30 Marks)

  1. Explain the topology of the LAN in Fig.1.

Identify the type of network components that you would use in different areas of the LAN in Fig.1 (1,2,3,4,5,6,7,8). For each of the network components that you pick, explain their purpose and function, location in the TCP/IP model, any similarities and differences, and their advantages and disadvantages.

You must provide a clear justification for each component you select.

(15 Marks)

  • Which class of IP addressing will you consider for the LAN in Fig 1? You must give the reasons and allocate sample IP addresses.

Explain what is subnetting and how it may be used in the LAN in Fig 1 giving an example.

(15 Marks)

Task 2 (20 Marks)

  • Which Computer Network Defence (CND) technologies have already been implemented in the LAN in Fig 1?

Explain how they work to protect the network.

Explain which CND service would be used to connect this LAN to the company head office in London and which components should be added to this LAN for this purpose?

(10 Marks)

  • Discuss what type of physical securities would you implement to safeguard the servers on the first floor?

(10 Marks)

Task 3 (30 Marks)

  • What type of network attack is occurring in incident number ONE (1)?

Which tools/techniques may have been used to run this attack? Which vulnerabilities have allowed this?

As the administrator of this network, which strategies, technologies, controls or measures will you use to avoid similar attacks in the future? (Your answers should cover a broad area of solutions from controls, technologies to periodic and long-term defence plans.)

(15 Marks)

  • What type of network attack is occurring in incident number TWO (2)?

Which vulnerabilities have allowed this threat and how they may impact the business continuity of this organisation?

As the administrator of this network, which strategies, technologies or measures will you use to avoid similar attacks in the future? (Your answers should cover a broad area of solutions from controls, technologies to periodic and long-term defence plans.

(15 Marks)

Task 4 (20 Marks)

  • Review and update TWO (2) security policies of the company with regards to incident
    • Which security policies you would review and how?

(10 Marks)

  • ONE (1) of the desktops in the second floor is the company’s manager workstation in which she keeps confidential files of the company. What type of host security controls would you consider for her system to secure the accesses to the files?

(10 Marks)


Consult with your tutor if you are uncertain about any aspect of this assignment.

Submission requirements

You must submit a word-processed report.

Your report should answer Tasks 1, 2, 3 and 4. The word count for your report is 4000 words.

Candidate checklist

Please use the following checklist to ensure that your work is ready for submission.

Have you read the NCC Education document Academic Misconduct Policy and ensure that you have acknowledged all the sources that you have used in your work?
Have you completed the Statement and Confirmation of Own Work form and attached it to your assignment? You must do this.
Have you ensured you have followed guidance about the length of this assignment?
Have you ensured that your work does not contain viruses and can be run directly?
Order Now

Get expert help for Network Security Threats and many more. 24X7 help, plag free solution. Order online now!

Universal Assignment (May 28, 2023) Network Security Threats and Defence Mechanisms. Retrieved from
"Network Security Threats and Defence Mechanisms." Universal Assignment - May 28, 2023,
Universal Assignment January 6, 2023 Network Security Threats and Defence Mechanisms., viewed May 28, 2023,<>
Universal Assignment - Network Security Threats and Defence Mechanisms. [Internet]. [Accessed May 28, 2023]. Available from:
"Network Security Threats and Defence Mechanisms." Universal Assignment - Accessed May 28, 2023.
"Network Security Threats and Defence Mechanisms." Universal Assignment [Online]. Available: [Accessed: May 28, 2023]

Please note along with our service, we will provide you with the following deliverables:

Please do not hesitate to put forward any queries regarding the service provision.

We look forward to having you on board with us.

Get 90%* Discount on Assignment Help

Most Frequent Questions & Answers

Universal Assignment Services is the best place to get help in your all kind of assignment help. We have 172+ experts available, who can help you to get HD+ grades. We also provide Free Plag report, Free Revisions,Best Price in the industry guaranteed.

We provide all kinds of assignmednt help, Report writing, Essay Writing, Dissertations, Thesis writing, Research Proposal, Research Report, Home work help, Question Answers help, Case studies, mathematical and Statistical tasks, Website development, Android application, Resume/CV writing, SOP(Statement of Purpose) Writing, Blog/Article, Poster making and so on.

We are available round the clock, 24X7, 365 days. You can appach us to our Whatsapp number +1 (613)778 8542 or email to . We provide Free revision policy, if you need and revisions to be done on the task, we will do the same for you as soon as possible.

We provide services mainly to all major institutes and Universities in Australia, Canada, China, Malaysia, India, South Africa, New Zealand, Singapore, the United Arab Emirates, the United Kingdom, and the United States.

We provide lucrative discounts from 28% to 70% as per the wordcount, Technicality, Deadline and the number of your previous assignments done with us.

After your assignment request our team will check and update you the best suitable service for you alongwith the charges for the task. After confirmation and payment team will start the work and provide the task as per the deadline.

Yes, we will provide Plagirism free task and a free turnitin report along with the task without any extra cost.

No, if the main requirement is same, you don’t have to pay any additional amount. But it there is a additional requirement, then you have to pay the balance amount in order to get the revised solution.

The Fees are as minimum as $10 per page(1 page=250 words) and in case of a big task, we provide huge discounts.

We accept all the major Credit and Debit Cards for the payment. We do accept Paypal also.

Popular Assignments

MQBS7030 Final Assessment Data Analysis and Report

ASSIGNMENT TASK: For this assignment, you need to refer to “Fringe” dataset. Fringe is concerned with the factors that contribute to the fringe benefits of employees. The dataset includes a range of different variables, which allows for a range of different tests to be performed. You should note that our

Read More »

MIS770 Foundation Skills in Business Analysis

MIS770 Foundation Skills in Business Analysis Department of Information Systems and Business Analytics Deakin Business School Faculty of Business and Law, DeakinUniversity Assignment Two Analysis of Click Sales Data Particulars Assurance of Learning This assignment assesses the following Graduate Learning Outcomes and related Unit Learning Outcomes: Graduate Learning Outcome (GLO)

Read More »

ITECH7407 – Real Time Analytics

Assessment Task – Data Analytics Assignment Overview For this assessment task, you will work in a group to analyse a selected data set, and provide recommendations to the leadership of the company based on your findings. Timelines and Expectations Percentage Value of Task: 25% Due: Week 11, Sunday 5pm Minimum

Read More »

BSB123 Data Analysis

BSB123 Data Analysis Research Report Assessment Semester 1, 2021 Due Date: 11:59 30th May The data for the Assignment can be found in the file Research Report Assessment (2021-01).xlsx on Blackboard The Problem FringeTech is an information technology / electrical engineering company that employs thousands of people Australia wide. Recently

Read More »

Final Analysis Assignment Help

Refer to the attached excel file, answer the questions below. Use graph if required. The file that can be accessed through the link below contains data on 100 employees in a particular occupation. Suppose that interest centres on investigating the factors that explain salary differences. The data set contains the following

Read More »

VETS6103 Data Analysis Assignment

Factors influencing milk production in Australian dairy cattle Assignment overview: This assignment involves analysing a dataset, interpreting results, and drawing conclusions based on the analyses. The dataset can be found in the file “practical_assignment_2021.xls” which is on Canvas under the Assignments folder. It is a group task worth 50% of

Read More »


ECON 1030 – BUSINESS STATISTICS 1: Individual Assignment   Instructions: This is an individual assignment with a total of 40 marks. The allocation of marks is as follows: Statistical Analysis     (including excel) 32 Professional Report 8              Total 40 The response to the assignment must be provided in the form

Read More »

Assessment 3: Public Health Data Analysis

Assessment 3: Public Health Data Analysis Weighting: 30 % Details of task: This assignment involves the presentation and interpretation of descriptive statistics and statistical test results. On completion of this assessment task, you will be able to: Word limit: This assessment is 2,500 word equivalent with a focus on calculations

Read More »

Log Book Entry 2: Association and Regression

Submission deadline: 11:59pm, 7th December, 2021. All analytics tasks must be completed using R, and should be reproducible from the R code, which must be submitted as an appendix. This log book entry will focus on using association and regression to examine the relationships between multiple variables. Using the ames_train

Read More »

Assignment 2 (Individual): Data Analysis Project

Assignment 2 (Individual): Data Analysis Project (50%): The retail bank that you work for recently ran a telephone marketing campaign to encourage customers to subscribe to a term deposit. Data was obtained from the marketing campaign, internal systems relating to the characteristics of the customer as well as whether or

Read More »

BI7138: Biodiversity Informatics

Biodiversity Informatics Assessment 1 Biodiversity Informatics Assessment 1 The Red Kite (Milvus milvus) is a scavenging raptor found throughout Europe and native to Britain. Red Kites were once common throughout Britain. During the last century their populations were reduced to just a handful of birds in the Welsh valleys by

Read More »

MGMT Course Assignment Fall 2021

Contents Contents General Information. 2 Rules. 2 Outside sources. 3 Scenario. 3 What you need to do. 4 Part 1 – Exploratory data analysis. 4 Table 1. 4 Part 2 – Training and testing set (sample) 4 Table 2. 5 Part 3 – Simple linear regression. 8 Table 3. 8

Read More »

CM 4223– Company Strategic Planning

SWOT Analysis Project Report Guidelines   Introduction/Overview/Background This section is an introduction of your company. Discuss things such as company history, background, leadership team, and location. Ensure that you mention who you are and what you do. If there are global operations, highlight this as well. Mention any goods and/or

Read More »

Surveying (48320) Final Assignment – Major Project

Surveying (48320)  AUTUMN 2023 Final Assignment – Major Project Weight: 40% Due date: 02/06/2023 Student Name:     ________________   Student Number: ______________ Submission Date: ______________________ Submission Component and Marks Awarded Marks   PLAN:     Find Scale of plan and explain 4   9 Bearing and Distances of three lines 3

Read More »

IAP607BM Independent Critical Analysis Project

ASSESSMENT 2 BRIEF Subject Code and Title IAP607BM Independent Critical Analysis Project Assessment Group Presentation of Preliminary Findings Individual/Group Group Length 10-minute presentation and 10-minute Q&A (+/- 10%) Learning Outcomes This assessment addresses the following Subject Learning Outcomes:   Critically review and synthesise the literature as it applies to the

Read More »

SEO PLAN Assignment Help

SEO PLAN Review the SEO slides, SEO videos, and other SEO resources (word files, examples, templates) before doing the assignment.  Choose a “client”, a small to a medium size company, that does not rank too high on search engines. Follow the step by step process described below and create an

Read More »

CET333 Product Development ePortfolio


Read More »

ETF2100/5900 Introductory Econometrics Assignment 2

ETF2100/5900 Introductory Econometrics Assignment 2 — A Case Study on the Birth-weight of Baby Important notes: Notation used in the assignment needs to be typed correctly and properly. Incorrect (or inconsistent) notations are treated as wrong answers. We are interested in studying whether a mother’s smoking affects the birthweight of

Read More »

HA1011 Applied Quantitative Methods Group Assignment

   HOLMES INSTITUTE   FACULTY OF HIGHER EDUCATION Assessment Details and Submission Guidelines Trimester T1 2022 Unit Code HA1011 Unit Title Applied Quantitative Methods Assessment Type Assessment 2 Assessment Title Group Assignment (Min of 2 and maximum of 4 members in a group. Please check the group self-enrollment guide in

Read More »

Practical Assessment 2 Data Wrangling

Practical Assessment 2 Data Wrangling Assessment type: Written report (PDF document) using R Markdown Due date: 26th May 2022, 5 pm Melbourne time Weighting: 30% Word limit: Maximum 25 pages Feedback mode: Feedback will be provided using Canvas marking tool and general text comments. Group assessment You will work on

Read More »

Using aggregation functions for data analysis

Using aggregation functions for data analysis Total Marks 100, Weighting 20% The provided zip file contains the data file [RedWine.txt] and the R code [AggWaFit718.R] to use with the following tasks, include these in your R working directory. You can use the R script [template.R] to organise your code. Clarification

Read More »

EC2509 – Econometrics B

EC2509 – Econometrics B This EC2509 problem set must be handed in via Turnitin by Wednesday 23th February 2022, 23.59 Please submit your answer as a single PDF document. The document should contain the results as well as your written answer to the questions, and an appendix with your full

Read More »

Research Report: Assignment 2

Due Date/Time: 3:00pm (AWST), Friday May 13th, 2022 Marks: This assignment will be marked out of 100 and is worth 40% of your final grade for PSEM. Topic Overview: In this assignment, you will be analysing and interpreting the results of research seeking to investigate whether using diagnostic labels to

Read More »

PSEM: Research Report Data Analysis

PSEM: Research Report Data Analysis The next two weeks of content are essential for your second assessment. You will be analysing and reporting the data collected for your research report assessment (worth 40% of your grade for PSEM). At the end of these two weeks, you should be in a

Read More »

Wage Gaps Major Project

As part of your assessment, you will submit a written project worth 40% of your  final mark. This document sets out the main aspects of this project.  The aim of the project is to integrate the learning from the entire module in the service of  conducting your own exploration of

Read More »

Can't Find Your Assignment?

Open chat
Free Assistance
Universal Assignment
Hello 👋
How can we help you?