Question

You are a Network and security engineer for the XYZ Consulting Corporation, which is a leading network designer and security provider for the small-scale offices. As the Network and security engineer you are required to perform the following tasks.

Task 1: Propose a network design for small scale office (Ex: Business type, departments, building plan). You are free to assume the name of the office and number of staffs ➢ Purpose of the Project ➢ Network overview (ex: connecting PCs, subnetworks, servers or wi-fi networks) • Explain briefly about the device used. ➢ Requirements of the project including network diagram • Draw and explain the proposed network diagram • Design a network using packet tracer. Configure routers, switches and end devices you have used. Test your network by pinging end devices across different departments. ➢ What are the common attacks plaguing your network? How to prevent from attacking your network? ➢ Critically analyse possible security issues in your network and suggest some prevention techniques.

Answer 1

Imagine there is a company named AitiAasik where it is a small Advertisement Company .

Its major work to advertise the business models and products of the clients, So there network many network models to utilize first we willl see the network requirements here:we assume here we have group of 20 systems

1)A secure internet connection from the internet service provider

2)A Router with good speed and bandwidth for 20 systems

3)Modem

4)Firewall

5)Switches for connecting our systems internally as a network (20)

6)Cable or fiber optics to connect them

7)Ethernet hubs and management softwares for the network.

Designing our Netwrok and configuring it.

For Small networks generally the logic flows goes like this the information from internet service provider(ISP) to modem which connects to router after it connects to the system of our company internally

These are the main types of configuations:

1)Star

2)Tree

3)Mesh

4)Token ring

5)Bus

But for our requirements and our budget we will go with Bus .As it is cost effective for smaller networks.and thelayout of this type is comapretively simple and if we want increase our network we can easily scale up the network which means we can add systems easily to our network by adding couple of more wires to the network.

The design of the networ topology used with description attatched

Design we will go by LAN(Loacal area network): This type of design conects the local nodes or in the close location typically used in the office buildings.

Designing a network packet tracker:

Cisco packet tracker

Configuration steps:

1)Open network topology and identify you components of the network

2)Complete the cabling

3)Configure the IP address on the end devices

4)Configure the IP address on the switches

5)Configure your default gateway

6)Test the connectivity

Common Attacks:

1)Phising

2)Malware injection

3)Password attacks

4)Ransomeware

These are the few type of attacks these can be solved by the below prevention techniques

1)Using Complex passwords to encrypt the network traffics

2)Using VPN to enable remote computer access

3)Setup a guest network for other wireless users

4)Limit physical access to router

5)Use upto date definitions of security softwares