Network Security is
essential to any organization. This has been previously done by manual method.
But this project is aimed at computerized Network Security to make the work
easier. This is possible because of the advance improvement in information technology
as pertaining programming language; because this is achieved by the help of
visual basic programming language and other programming language. For the first
few decades of their existence, computer\ networks were primarily used by
university researchers for sending e-mail and by corporate employees for
sharing printers. Under these conditions, security did not get a lot of
attention. But now, as millions of ordinary citizens are using networks for
banking, shopping, and filing their tax returns, network security is looming on
the horizon as a potentially massive problem. The requirements of information
security within an organization have undergone two major changes in the last
several decades before the widespread use of data processing equipment the security
of information felt to be valuable to an organization was provided primarily by
physical and administrative means with the introduction of computer the need
for automated tools for protecting files and other information stored on the
computer became an evident .this is especially the case for a shared system
such as time sharing system and the need is even more acute for systems that
can be accessed for a public telephone or a data network the generic name for
the collection of tools to protect data and to thwart hackers is ―computer
security‖. Network Security is a broad topic and covers a multitude of sins. In
its simplest form, it is concerned with making sure that nosy people cannot
read, or worse yet, secretly modify messages intended for other recipients. It
is concerned with people trying to access remote services that they are not
authorized to use. Most security problems are intentionally caused by malicious
people trying to gain some benefit, get attention, or to harm someone. Network
security problems can be divided roughly into four closely intertwined areas:
secrecy, authentication, non repudiation, and integrity control. Secrecy, also
called confidentiality, has to do with keeping information out of the hands of
unauthorized users. This is what usually comes to mind when people think about
network security. Authentication deals with determining whom you are talking to
before revealing sensitive information or entering into a business deal. Non
repudiation deals with signatures.
TABLE OF CONTENT
Title page i
Table of content vii
1.0 Introduction 1
1.1 Statement of the
1.2 Purpose of study
1.3 Aims and
objective of the study 6
1.4 Scope of study 6
1.5 Constraints 6
1.6 Assumptions 7
1.7 Definition of
3.0 Description and
analysis of the existing system 15
3.1 Fact Finding
Method Used 15
3.2 Objective of the
existing system 15
Input/process/output analysis 18
3.5 Information flow
4.0 Design of new
specification and design 21
specification and design 21
4.3 File design 22
4.4 Procedure chat 23
4.5 System flowchart
5.0 Implementation 26
5.1 Program design 26
5.3 Documentation 29
& Conclusion 30
5.4.1 Recommendation 30
5. 4.2Conclusion 30
5.5 Summary 32
Appendix I 36
Appendix II 37
Output display 42
recent proposals have argued for giving third parties and end-users control
over routing in the network infrastructure. Some examples of such routing
architectures include TRIAD , i3 , NIRA , Data Router , and
Network Pointers . While exposing control over routing to third-parties
departs from conventional network architecture, these proposals have shown that
such control significantly increases the flexibility and extensibility of these
such control, hosts can achieve many functions that are difficult to achieve in
the Internet today. Examples of such functions include mobility, multicast,
content routing, and service composition. Another somewhat surprising
application is that such control can be used by hosts to protect themselves
from packet-level denial-of-service (DOS) attacks , since, at the extreme,
these hosts can remove the forwarding state that malicious hosts use to forward
packets to the hosts. While each of these specific functions can be achieved using
a specific mechanism—for example, mobile IP allows host mobility— we believe
that these forwarding infrastructures (FIs) provide architectural simplicity
and uniformity in providing several functions that makes them worth exploring.
Forwarding infrastructures typically provide user control by either allowing
source-routing (such as , , ) or allowing users to insert forwarding
state in the infrastructure (such as , , ). Allowing forwarding
entries enables functions like mobility and multicast that are hard to achieve
using source-routing alone.
there seems to be a general agreement over the potential benefits of
user-controlled routing architectures, the security vulnerabilities that they
introduce has been one of the important concerns that has been not addressed
fully. The flexibility that the FIs provide allows malicious entities to attack
both the FI as well as hosts connected to the FI.
instance, consider i3 , an indirection-based FI which allows hosts to insert
forwarding entries of the form (id,R), so that all packets addressed to id are
forwarded to R. An attacker A can eavesdrop or subvert the traffic directed to
a victim V by inserting a forwarding entry (idV ,A); the attacker can eavesdrop
even when it does not have access to the physical links carrying the victim’s
traffic. Alternatively, consider an FI that provides multicast; an attacker can
use such an FI to amplify a flooding attack by replicating a packet several
times and directing all the replicas to a victim. These vulnerabilities should
come as no surprise; in general, the greater the flexibility of the
infrastructure, the harder it is to make it secure.
this project, we improve the security that flexible communication
infrastructures which provide a diverse set of operations (such as packet
replication) allow. Our main goal in this project is to show that FIs are no
more vulnerable than traditional communication networks (such as IP networks)
that do not export control on forwarding. To this end, we present several
mechanisms that make these FIs achieve certain specific security properties,
yet retain the essential features and efficiency of their original design. Our
main defense technique, which is based on light-weight cryptographic constraints
on forwarding entries, prevents several attacks including eavesdropping, loops,
and traffic amplification. From earlier work, we leverage some techniques, such
as challenge-responses and erasure-coding, to thwart other attacks.
is an important aspect of any system. NETWORK SECURITY is the act of ensuring
that an authenticated user accesses only what they are authorized to and no
more. The bad news is that security is rarely at the top of people's lists,
although mention terms such as data confidentiality, sensitivity, and ownership
and they quickly become interested. The good news is that there is a wide range
of techniques that you can apply to help secure access to your system. The bad
news is that as Mitnick and Simon (2002) point out …the human factor is the
weakest link. Security is too often merely an illusion, an illusion sometimes
made even worse when gullibility, naivette, or ignorance come into play. The go
on to say that security is not a technology problem – it’s a people and
management problem. Having said that, my experience is that the technology
factor and the people factor go hand in hand; you need to address both issues
control is the ability to permit or deny the use of a particular resource by a
particular entity. Access control mechanisms can be used in managing physical
resources (such as a movie theater, to which only ticket holders should be
admitted), logical resources (a bank account, with a limited number of people
authorized to make a withdrawal), or digital resources (for example, a private
text document on a computer, which only certain users should be able to read).
are secured financial institutions. They are often housed in large buildings
that are located in a commercial or residential area. Banks store money and
other financial information and goods.
and valuables have been stored in banks since ancient times. As a result of the
long history that banks have enjoyed, bank security has also been important for
a long time. Some of the oldest banks in the world have the best security
available. These banks include the Bank of Sweden, the Bank or England, Bank of
America, and Swiss Banking.
security usually includes a staff of security guards, a security system, and
one or more vaults. Security guards are uniformed personnel that maintain high
visibility and watch cameras and alarms. Cameras and alarms are usually top of
the line systems in banks and other financial buildings. But these security
elements are not exclusive to banks. Some of these elements can be found in
other commercial buildings and even residential homes. Basic security starts
with the locks. For a high level of security, windows and doors will need the
best locks. After high quality locks are installed many property owners opt for
a security system or even security cameras.
cameras are often a small part of a larger security system. Systems often
include motion detectors, alarms, sensors, and cameras. Cameras are arguably
the most important because they allow the property owner to see and record
everything that happens in and around their building or property.
can be installed by a professional or by a property owner. For a large and
elaborate system it may be best for a professional to do the work. But for a
smaller and easy layout, a property owner should have no problem installing a
system by following the manufactures instructions. If he does than there is
usually a local installer that can be called to help finish the job.
1.1 STATEMENT OF THE PROBLEM
Fraudulent act of some customer/workers
Accessing the organizational data/information unauthorized
Sensitive nature of bank data/information
Valuable or costly items in bank
Increase in crime in our society
need arise for the development of computerized NETWORK SECURITY to eliminate
1.2 PURPOSE OF STUDY
main purpose of this project is to design a NETWORK SECURITY that will assist
UBA in the area of ensuring effective security measures.
1.3 AIMS AND OBJECTIVES
project will have the following aims and objectives:
Detecting security violations
Re-creating security incidents
To disallow unauthorized users
To safeguard the organizational
To computerized the organizational
To enhance the organizational
To eliminate all forms of mistakes
associated with security control
1.4 SCOPE OF STUDY
research work will access the design and implementation of NETWORK SECURITY in
UBA Lagos. It will look into the operations of this bank in the aspect of
computerizing their security control system.
project will be limited to the data available at hand, data outside the
researcher will not be made use of. The
limitations militating against this research are financial constraints, time
factor and other circumstances.
efficiency and reliability is associated with Network Security.
the purpose of this research, my assumptions can be stated as follows:
The application of computer related garget for security control
A computerized Network Security is effective and dependable
1.7 DEFINITION OF TERMS
Administration is an aspect of
running the organization by devising systems which will run smoothly.
Client: This any process that request specific services from server
This is an electrons machine that can accept; handle and manipulate data by performing
arithmetic and logic operations without human intervention usually under the
control of programmes.
Data: This is fore runner of information. It is unprocessed fact.
Database is a collection of
information that is related to a particular subject or purpose.
Hardware: This is the electromechanical part of computer system.
Information: This is data that have been processed, interpreted and
understood by the recipient of the message or report.
Internet is a collection of computer
networks that operate to common standards and enable the computes and the
program they run to communicate directly.
Server: This is a process that provides requested services for clients.
Software: This is a logically written program that hardware uses to
perform it’s operation.
System is the collection of
hardware, software, data information, procedures and people.
Website is a space or location
customized by a company, organization or an individual which is locatable
within an address on the internet.
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