COIT20264 Network Design - Desklib

This document provides a network design solution for Cosmos Online newspapers. It includes a logical network diagram, list of requirements, assumptions, and security mechanisms. The network solution integrates the advertisement server, provides handheld devices to news reporters, and uses a top-down network topology. The document also lists routing and switching protocols and security mechanisms.

Running head: COIT20264 NETWORK DESIGN
COIT20264 Network Design
Name of the Student
Name of the University
Author’s Note

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Table of Contents
Assessment Item 1 – Part A.............................................................................................................2
Assessment Item 1 – Part B...........................................................................................................10
List of Assumptions...................................................................................................................10
List of Requirements..................................................................................................................11
Logical Network Diagram.........................................................................................................11
Explanation of the logical network diagram..............................................................................12
Justification of the network design............................................................................................12
Addressing and naming model..................................................................................................13
List of Routing and Switching protocol.....................................................................................13
List of Security Mechanism.......................................................................................................14
References......................................................................................................................................15

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Assessment Item 1 – Part A

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Assessment Item 1 – Part B
List of Assumptions
The following are the list of assumption made for the development of the network solution for
Cosmos Online newspapers.
 A windows Server 2012 r2 is used as virtual server for hosting the website and it is
configured with proper security mechanism for securing its access.
 The server is backed up for increasing the redundancy and disaster recovery and
uploaded to the cloud server in an encrypted form for increasing the security of the
database.
 There are different sites for the different servers and they are connected to each other via
the internet.

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 The storage and the database servers are installed in a demilitarized zone for increasing
the security of the resources.
 A VPN tunnel is used for transferring of the data packets between the different servers
for increasing the security of data communication.
List of Requirements
The followings are the list of requirement that the network solution should meet for the
development of the network solution for Cosmos Online newspapers.
 The network solution needs to integrate the advertisement server with the current
network for streaming live ad contents with the live video feeds provided by the
newspaper publishing company.
 Handheld smartphone devices must be provided to the news reporters for enabling
live news reporting in the areas where there is average internet connectivity
speed.
 Development of a network addressing plan for creating the local area network of
the office and connect the permanent staffs with each other.
 Selection of a top down network topology for connecting the different
communication devices and meeting the requirement of the users.

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Logical Network Diagram
Explanation of the logical network diagram
The network diagram is created for the development of the network solution for Cosmos
online newspapers. The network for the headquarters of the company is created by using two
routers and one of the routers is used for connecting the database and the ad servers, job
processing servers and it is configured with access control list for allowing the users to connect
or block to access the resources of the servers connected in the network. The routers should also
be configured with authorization such that the configurations are kept secured from the internal
users using the system. Different VLANS are created in the switch for dividing the network into
different subnets and reduce the wastage of the IP address. The firewall device is installed at the
entry point of the network for securing the network from external agents and dropping the
unknown request from different users for securing the internal network. The network is

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connected with freelancer via the internet and the freelancer uses their GPRS or UTMS
connection for connecting with the resources of Cosmos Online newspapers. A wireless cell
tower is used for connecting the telecommunication devices provided to the freelancing reporters
located in different geographical location of the country. Three servers are used in the diagram
and connected with the first floor switch
Justification of the network design
For the development of the logical design Cisco 2811 series router are used because it
have all the ports available and can be configured by aligning the business rules of the
organization. Cisco ASA5505 firewall is used for blocking the unknown request and the external
users to connect with the core resources of the network and creation of a demilitarized zone. The
wireless tower is used for demonstration of the connectivity of the freelancer that uses the
handheld devices for connecting with the network and transfer the video or document in the
network. The Web server is configured with authentication such that the user can connect with it
with proper authentication for uploading or downloading media content. A router is configured
with load balance such that the data can be divided and the servers does not gets overloaded.
Addressing and naming model
Addressing and naming scheme is important for connecting the devices and allocating
unique IP address to each of the device connected in the network. The naming scheme helps in
easy management of the network. A DNS server is used for the management of the address and
the naming scheme used for the network. The router needs to be configured with DHCP address
pool for automatically assign IP address to the internal device connected in the network. The
naming of the servers in the name of the goddess can help in reducing the risk of DDoS attacks
and the network devices are kept secured.

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List of Routing and Switching protocol
The following are the list of routing and switching protocols used for the configuration of
the network and are listed below:
 Configuration of VLANs on the ground floor and first floor switch for separating the
server subnet and increasing the efficiency of the utilization of the IP address.
 Configuration of the router with DHCP for automatically assign IP address to the device
connected in different VLAN of the network
 Configuration of the router with access control list ACL for aligning the business rules
and secure the internal communication.
 Configuring the switch with STP spanning tree protocol and enabling dynamic routing
for reducing the risk of link failure and congestion in the network
 Configuring the web server with active directory and grouping the users for proper
authentication of the users.
List of Security Mechanism
The following are the list of security mechanism applied for the increasing the security of
thee network
Authentication – Authentication must be applied in different levels such as at the router
for restricting the internal users to access the configuration of the router. The servers must be
configured such that all the users does not have the write permission.
Physical Security – The servers must be installed in the DMZ zone and the physical access must
be restricted to the staffs working in the organization.

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Data Encryption – The data residing in the database servers must be encrypted with the
application of MD5 hash algorithm such that it cannot be retrieved by the illegal users.
Packet Filtering – The router must be configured with packet filtering such that it can
drop the unknown data packets and restrict the vulnerable IP address to reach the servers
connected with the router.
Firewall – A set of firewall rules should be created for allowing or denying the incoming
or outgoing data packets in the network. The firewall is used for creating restriction in the
incoming and the outgoing data packets.

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References
Coskun, S., Ozgur, L., Polat, O. and Gungor, A., 2016. A model proposal for green supply chain
network design based on consumer segmentation. Journal of Cleaner Production, 110, pp.149-
157.
Li, H., Liu, Y., Ouyang, W. and Wang, X., 2017. Zoom Out-and-In Network with Recursive
Training for Object Proposal. arXiv preprint arXiv:1702.05711.