Network Design and Configuration Report 2022

Running head: NETWORK DESIGN AND CONFIGURATION
Network Design and Configuration
Name of the Student
Name of the University
Author Note

NETWORK DESIGN AND CONFIGURATION
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Summary
According to a wide number of researches, network segmentation and internal measures for
controlling network access play a vital role in stopping information security threats like
hackers, and other cyber security attacks from compromising networks. This report presents a
network for the company ALM that comes with such segmented subnetworks and adequate
security schemes applied on the segments through internal network commands. First this
report provides the requirement summary of the network containing the layout and allocation
of devices for the respective segments, what access restrictions are needed and different
servers installed as also specifying need for subnet calculations. Then this report shows the
network design drawn in Cisco Packet Tracer simulation software and explains the network
architecture thoroughly. Thereafter the IP addressing and classification of the subnets for the
network segments is given in an IP addressing table and discussed below as per the various
segments. The implementation of VLANs is then shown and discussed where it explains the
configuration of inter VLAN routing. Next this report talks of the set of access control list
commands used for restricting departments from accessing each other. All this security
applied with ACL commands gets shown with appropriate screenshots. After this the report
conducts tests and validation checks to verify that the network presented is meeting AML’s
requirements. Then the report discusses about IP address assigning and ends with concluding
notes.

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Table of Contents
Introduction................................................................................................................................3
Requirements..............................................................................................................................3
Solution......................................................................................................................................5
Network Design.....................................................................................................................5
Network Subnetting and IP allocation...................................................................................6
VLAN Implementation..........................................................................................................9
VLAN Access Restrictions using Access Control List........................................................10
Validation and Tests.............................................................................................................12
Protocols for connecting devices.........................................................................................15
Conclusion................................................................................................................................16
Bibliography.............................................................................................................................18

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Introduction
The below report highlights the crucial role played by network segmentation and
internal measures for controlling network access in stopping information security threats like
hackers, and other cyber security attacks from compromising networks. This report presents a
network for the company ALM that comes with such segmented subnetworks and adequate
security schemes applied on the segments through internal network commands. This report
begins by providing the requirement summary of the network containing the layout and
allocation of devices for the respective segments, what access restrictions are needed and
different servers installed as also specifying need for subnet calculations. Then this report
shows the network design drawn in Cisco Packet Tracer simulation software and explains the
network architecture thoroughly. Thereafter the IP addressing and classification of the
subnets for the network segments is given in an IP addressing table and discussed below as
per the various segments. The implementation of VLANs is then shown and discussed where
it explains the configuration of inter VLAN routing. Next this report talks of the set of access
control list commands used for restricting departments from accessing each other. All this
security applied with ACL commands gets shown with appropriate screenshots. After this the
report conducts tests and validation checks to verify that the network presented is meeting
AML’s requirements. Then the report discusses about IP address assigning and ends with
concluding notes.
Requirements
ALM’s network is to contain four separate LAN networks for the four departments along
with LAN networks of the server cluster as also the wireless WLAN network.
LAN network for the server cluster comprises of the DNS server, the mail server, the web
server and the FTP server for catering to the various networking purposes.

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All of these above-mentioned servers must be able to communicate both ways with individual
workstations and devices of users from every departments.
Subnet calculation and breakdown of the ALM network must be carried out based
requirements of workstations, printers and servers by the different LAN networks.
The network of alm.co.uk must also have support for wireless connectivity to serve various
smartphones, laptops and other wireless devices of users from the four departments.
Next the network is to be segmented based on the subnets for ensuring that the
communications over the network between the devices of all the six LAN networks are
administered and controlled more effectively with predefined set of rules for network access.
Every department is to be prevented from access to systems of any other department through
the internally applied security mechanisms.
Number and distribution of PCs and printers among the four different departments are as
follows:
48 PCs along with 1 printer for Department 1,
18 PCs along with 1 printer for Department 2,
11 PCs and 1 printer for Department 3,
68 PCs as well as 1 printer for Department 4.

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Solution
Network Design
Figure 1: Network Design Diagram of alm.co.uk
The above figure presents the diagram showing a detailed view of the network design
for the small sized organization of alm.co.uk and discusses how it is operated. This network
diagram makes evident, that ALM’s network is created based on the three-layered
hierarchical model of networking architecture comprising of the core, the distribution and the
access layers and is also seen to follow a top down networking approach. From the top the
router of the company’s network obtains network from routers of the ISPs or Internet Service
Providers and forms the core layer. In this core router all the different configurations
regarding configuration of sub interfaces, creation of DHCP pools and inter VLAN routing
for all six network segments is performed. Then this routed network gets passed to the
multilayer switch which facilitates the inter VLAN routing. This switch constitutes the
distribution layer of the network. This switch distributes network access to lower level layer 2
switches of the six different LAN networks. Network connectivity for these particular
switches are ensured via their specific VLANs. The layer 2 switches directly connect the
individual devices and thus form the access layer thereby completing this three-layer model
of networking architecture. These six layers 2 switches include four for the various different