Cloud Computing Services and Technologies

This assignment delves into the realm of cloud computing services, examining a wide range of topics. It covers fundamental concepts, architectural models, deployment strategies, service delivery mechanisms (IaaS, PaaS, SaaS), prominent cloud providers, emerging technologies like NFV and IoT integration with cloud platforms, and challenges faced by cloud service adoption. Additionally, it discusses quality models for assessing cloud services and the impact of DHCP churn on network characterization within a cloud environment.

Running head: IT INFRASTRUCTURE
IT Infrastructure
Name of the Student
Name of the University
Author’s Note

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Table of Contents
1. Introduction..................................................................................................................................2
2. Discussion on IT infrastructure components...............................................................................4
3. Three-layers hierarchal model.....................................................................................................4
3.1. Introduction...................................................................................................................4
3.2. Analysis of iTech IT requirements...............................................................................5
3.3. Geographical scope.......................................................................................................5
3.4. Possibility of scaling.....................................................................................................6
4. Dedicated server design proposal................................................................................................6
4.1. Required services and servers.......................................................................................6
4.2. Logical design...............................................................................................................7
4.3. IP address and network mask for the network..............................................................7
5. Design Proposal based on Cloud.................................................................................................9
5.1. Cloud service based Organisations...............................................................................9
5.3. List of services Organisation provides.........................................................................9
6. Network Simulation...................................................................................................................10
6.1. Access layer diagram..................................................................................................10
6.2. DHCP Configuration..................................................................................................10
6.3. DNS and Web Server Configuration..........................................................................11
6.4. Client dynamically obtaining Network Configuration...............................................12
7. Recommendation and Conclusion.............................................................................................13
Bibliography..................................................................................................................................14

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1. Introduction
The report is prepared for giving an overview of the network proposed for iTech and two
solutions are proposed for the organization for increasing the security of the current framework
and allow the remote client to access the organizational network securely. The report mainly
aims at the following contents:
 The expanded development of the association is required to be examined for the
readiness of the new system designed for the iTech.
 The security of the system is required to be enhanced with the establishment of
firewall and securing the entrance point with encryption calculation.
 To deploy a DHCP server for auto allocation of IP address to the desktops and
workstations associated in the system consequently.
 A SMTP server is required to be designed to such an extent that the workers can
email each other by means of messages inside the network.
The principle goals of the improvement of the iTech organize are recorded as takes after:
 To convey a DNS and DHCP server and designing it for meeting the necessity of
the association
 To convey a WEB server and design it with the given space name
 To design the switch with fringe passage convention for speaking with the gadget
associated with the interface of another switch in a similar system.
 To utilize legitimate subnetting for limiting the wastage of the IP address and
increment the proficiency of the proposed organize arrangement.

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 To arrange a firewall for obstructing the obscure demand and secure the system
from outside specialists.
Contents covered
The report is set up for iTech and two distinctive system configurations are made for the
association meeting the entire prerequisite. The cloud for each of the workplace building is
intended for pleasing the present needs of the association and furthermore the future needs of the
association. The server farm of the building is outlined in cisco bundle tracer and the web server
of the association is arranged utilizing the URL www. iTech.org.au. The present system of the
association is dissected and the defects in the system configuration are recognized for planning
the system as per the necessity. The server is likewise required to be designed with the end goal
that it can be utilized for sharing of documents to the hubs associated in the system. The
advantages that the association can pick up with the organization of the cloud benefit are
examined in the report.
Hierarchical Description
iTech is a software development company and its system comprises of 900 PCs and the
workplace of the organization are situated in three structures found adjoining and comparable
sort of cloud arrangement is required to be utilized for the workplace. A DHCP server is required
to be utilized for portion of the IP deliver to the PCs associated in the system. Two outlines are
proposed for the association are worked from the scratch with the usage of the current innovation
to such an extent that it can oblige the future development of the association. The various leveled
demonstration is utilized for outlining the design of the server farm building and load balancers

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are utilized with the end goal that the system does not winds up plainly down. The committed
server configuration is utilized for the improvement of the system arrangement.
2. Discussion on IT infrastructure components
For the advancement of the committed server design of the association the present
structure of the association is required to be enhanced and a different room is required to be
utilized for the establishment of the server and shielding them from physical access. The switch
and the routers is required to be introduced in divider bureau and legitimate cooling is required to
be utilized with the end goal that the gadgets does not gets over warmed and the proficiency of
the framework never gets decreased. A firewall is required to be introduced in the system for
expanding the security of the system and eliminate the risk that the unauthorized clients can
interface with the system gadgets and the servers introduced in the system. The database server is
required to be encoded with the end goal that any approved client gets the entrance of the server
can't unscramble the server for illicit utilize. The cloud administration can be included with the in
house server for expanding the adaptability and diminishing the cost of the administration of the
in house server. The IaaS and the PaaS of the cloud benefit is required to be dissected before the
choice of the cloud administration and execution in the present system of the association. The
workload of the system is required to be isolated into various channels with the end goal that the
server does not gets over-burdened.
3. Three-layers hierarchal model
3.1. Introduction
The server solution is set up with the deployment of DNS, DHCP and WEB server for
meeting the current needs of the organization. The network is created with dividing it into

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different layers and implementation of security protocol for securing each of the layers of the
network solution. The core layer of the network consists of the important elements such as the
routers and the severs and the distribution layer consists of the switches used for connecting the
hosts installed in the network. Network protocol analyser can be installed for identification of the
unauthorised request and monitoring the traffic generated in the network and secure the access
point with application of encryption algorithm. The access layer of the network is created by
application of encryption and password protection for communicating with the core and the
distribution layer of the network infrastructure.
3.2. Analysis of iTech IT requirements
The organization needs top setup a VPN connection for connecting with the remote hosts
and a separate server is required to be setup for allowing the remote user to connect with the
organizational network. An username and password is required to be provided to the remote
client for securely login into the system. The other requirement for setting up the network is
switch, router, network cables and servers. An addressing plan is required to be created for
connecting with the devices connected in the network. The server is configured with DHCP for
allocation of the IP address to the desktops and workstations installed in different location of the
buildings. The PC are divided in a segment of 300 and different subnets are used for
accommodation of the PCs and some extra IP address are reserved for accommodation of mopre
number of device in future.
3.3. Geographical scope
The system of iTech is required to cover every one of the floors of the neighbouring
structures and interface all the 900 PCs arranged differently in the workplace structures. A
comparative kind of LAN topology is required to be taken after for simple support and a tending

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to design is required to be taken after for giving IP deliver to the hubs associated in the system.
The foundation of the system is made using the fibre optics link for expanding the data transfer
capacity and diminishing the clog in the system. Movement administration is important and the
servers associated in the system are required to be designed by the necessity of the association.
3.4. Possibility of scaling
The network design created for iTech meets the essential of the association for the
coming five years and in like manner the present advancement is required to be associated with
influencing the framework to respond in due order regarding iTech. It is typical that there would
be an extension in the quantity of centres in the framework and in this way, the subnet cover for
each of the floor is required to be figured with the true objective that it can suit the future
improvement of the affiliation.
4. Dedicated server design proposal
Ther are different risk associated with the current framework such as the servers get over-
loaded and the clients lose the passage of the site. Presently the arrangement of the affiliation
contains two servers one is used for encouraging the area of the association, and the other is used
for advancing the database. The server homestead of the affiliation is required to be made with
stack altering and versatile for the organization without limits needs.
4.1. Required services and servers
The response time of the database and the web server is required to be minimum and it
should never be down. The availability of the servers affects the efficiency of the server solution
and a store balancer and database balancer is required to be presented in the framework for

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trading the heap to such a degree, to the point that the front end is balanced. The affiliation needs
to get to the site and the benefits of the association from any of the level and remote zone.
4.2. Logical design
The design is created with the application of load balance in front of the database and the
web servers and balancing the request coming from different devices to fetch the content of the
servers. A clone of the servers is cleated such that of one of the server fails the other can be used
to run the network. The clone server can also be used for handling the request and increase the
efficiency of the current network solution proposed for iTech. The load balancer can be
programmed to divert the network traffic when it finds the server is loaded more than the
neighbour server installed in the network.
4.3. IP address and network mask for the network
Major Network: 172.16.0.0/21

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Available IP addresses in major network: 2046
Number of IP addresses needed: 900
Available IP addresses in allocated subnets: 1530
About 75% of available major network address space is used
About 59% of subnetted network address space is used
Subne
t
Name
Neede
d Size
Allocate
d Size
Address Mas
k
Dec Mask Assignable
Range
Broadcast
A 300 510 172.16.0.
0
/23 255.255.254.
0
172.16.0.1 -
172.16.1.25
4
172.16.1.25
5
B 300 510 172.16.2.
0
/23 255.255.254.
0
172.16.2.1 -
172.16.3.25
4
172.16.3.25
5
C 300 510 172.16.4.
0
/23 255.255.254.
0
172.16.4.1 -
172.16.5.25
4
172.16.5.25
5

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5. Design Proposal based on Cloud
There are several risks with the development and maintenance of the dedicated server
such as disaster caused by human or natural disaster. It is hard to recover the files stored in the
dedicate server if it gets corrupted and th8us the cloud solution is required to be integrated for
backing up the data and increase the efficiency of the dedicated server solution,. The cloud
service is required to be selected and it is more flexible than the dedicated server and has
different storage option available and it can be selected according to the requirement.
5.1. Cloud service based Organisations
There are many cloud authority association, for instance VMWare, Amazon, Google, etc.
And the most diverse variety of solution is provided by Amazon Web Service and it is required
to be selected according to the needs of the organization. The AWS is flexible and the features in
the cloud service can be added on extra payment.
5.3. List of services Organisation provides
The list of service offered by the AWS is given as follows:
o Storage- a scalable storage option can be used for backing up the data and
storage of virtual applications.
o Compute- Virtual servers can be purchased for increasing the elasticity of
the network and controlling the API.
o Database- it can be used for memory caching service and run queries for
the software development team,.
o Network and delivery of content- A DNS service can be selected and can
be used for setting the VPN connection with the remote client

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6. Network Simulation
6.1. Access layer diagram
6.2. DHCP Configuration

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6.3. DNS and Web Server Configuration

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6.4. Client dynamically obtaining Network Configuration

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7. Recommendation and Conclusion
For planning of a practical system proposal for iTech the cloud computing is the best
alternative however it doesn't give all the usefulness required by the association. In this manner it
is suggested that with the improvement of an in house server arrangement and using the cloud
computing for reinforcement the authoritative information would be the best alternative for
iTech. The cloud information can be utilized as a part of future by the association for
recuperation. There is diverse administration display accessible in the market and the
accomplishment of the system arrangement relies upon the choice of the correct stage. A portion
of the cloud merchants does not support movement of the information and subsequently the
administration level understanding is required to be assessed before the determination of the
cloud seller. The administration offered by the cloud merchant is additionally required to be
examined in light of the fact that it might be required in future for dealing with various
operations and enhance the business procedure of the association. There are a few favourable
position of the reception of the cloud stage in the hierarchical system and it is required to be
considered and contrasted and the hazard for adjusting it in the authoritative system.

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