Importance of Networking and Security in Organizations

NETWORKING AND SECURITY
Networking and Security
ITECH1102
Name of the Student
Name of the University
Author Note

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NETWORKING AND SECURITY
Table of Contents
Overview of Networking and security.......................................................................................2
Packet switching and networking models..................................................................................3
Application layer........................................................................................................................4
Data link layer............................................................................................................................4
Network layer.............................................................................................................................5
Transport layer...........................................................................................................................6
Self-assessment........................................................................................................................10
Reference..................................................................................................................................11

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NETWORKING AND SECURITY
Overview of Networking and security
This section of the report is to focus the importance of the networking and security for
the protection of the data which are transmitted from the source to the destination address in
an organization. It involves both hardware and software related to the organization. The
prime role and function of network and security in current computing is the protection of the
network used in an organization and data which is transmitted in an organization. The three
fundamental principles of networking security are availability, integrity and confidentiality.
The confidentiality is concerned with the prevention of the unauthorized disclosure of
essential information (Rawat & Reddy, 2017). The three prime objectives of integrity are
prevention from alteration of data, prevention of unauthorized users and availability refers to
the uninterrupted access to the information related to the system.
The hardware and software entities associated to networking and securities are cable,
firewall, router, DSL modems, VoIP systems and printers. The protocols and interaction
involved in the networking and security are DNDSC, Secure Socket Layer (SSL), Transport
Layer Security (TLS), secure IP (IPSec), Secure Hypertext transfer protocol (HTTPS), secure
e-mail (PGP and S/MIME). Security in cloud computing is very much an essential factor
considering the networking and security as the data which are stored in the cloud servers are
stored on the basis of the rules and regulation proposed by the cloud service providers. The
networking architecture is very much essential considering the networking and security as it
gives an idea about the security zones and layers in which the data is stored. Every IT
organization have an unique system which dedicatedly works for the network security
architecture and it needs to be modified according to the business situation.

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NETWORKING AND SECURITY
The management of the threats and vulnerability in the network of an organization
helps in the growth and development of the organization. All the policies and regulations of
the company associated with essential data should be developed in such a way that it
becomes compatible with the network security of the organization as it will lead to the
growth and development of the organization itself.
Packet switching and networking models
The role and functions of the different types of networking models are used to
describe the type of network used by the organization; the packets which are routed through
the networks are examined using the source and destination address. There are specific
principles of communication for each of the networking models. The technologies associated
with this packet switching are the Local area network (LAN), Wide Area Network (WAN)
and the circuit switching technology. This type of networking model is used to group data
which is transmitted across a network of an organization into packets.
The basic structure of a packet includes payload and a header (Nozaki et al., 2015).
This type of networking model is the most widely used networking models in worldwide
computer networks. The data which is present in the header of this model are used by the
networking hardware. It is used to direct the packet to its destination where the payload is
extracted and are used by the application software.
The two major modes of packet switching are connectionless packet switching and
connection oriented packet switching. The format followed in the connectionless packet
switching are destination address, source address, total number of pieces and the sequence
number and in the connection oriented packet switching, data packets are sent sequentially
across a route (Diamantopoulos et al., 2015). Each packet is assigned with a sequence