lan controller

8/12/2019 lan controller

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Chapter 1

PROBLEM DEFINATION

Project mainly aims to write a software system that is used as a remote control for PCs

connected as a Local Area Network, this software is used to lock various resources such

as Drives, Folders, Files, Applications and Data Files, and it also control the processes

that are running on the remote computer !he software system also controls the

login"logoff and shutdown"restart events !he software has the a#ility to lock the

command prompt, regedit $registry editor% and &'( as well as )emova#le Drives such as

CD)*+ and DD )*+")D-) .t also restricts the network"we# and printer access of

the PC Program modules are written that will lock its various other resources such as

printers or net connection etc

Previously we used to go to each and every individual machine in the network and lock

the resources on it !here is no way to do it from a single server which is connected in the

same local area network !here was no way to impose these rules from a remote server

-e also had windows utility called as a remote desktop connection that gives us the

a#ility to remotely connect to a computer"PC in network, after getting connected to the

computer the screen of the computer appears on the machine from where we are

connecting After successful connection we can control the PC as if it/s our PC and we

are controlling it with our key#oard and mouse (ut this windows utility is completely

different from our system as we do not connect to the machine #ut still can control its

resources to lock or unlock them !his way it save the processing powers of #oth the

server and client computers, thus speeding up the process

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OBJECTIVES

0 (rowse client system remotely

1 &pload" Download files from client

2 !o design and devolves a system as user friendly as possi#le

3 !his is not only to reduce manual work #ut also time and storage )e4uirements

5 &'( protection



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Chapter

SOFTWARE REUIREMENT SPECIFICATION

What " a S'%t3are Re40re(e&t" Spe,%,at'&5

An ')' is #asically an organi:ation;s understanding $in writing% of a customer or

potential client;s system re4uirements and dependencies at a particular point in time

$usually% prior to any actual design or development work .t;s a two6way insurance policy

that assures that #oth the client and the organi:ation understand the other;s re4uirements

from that perspective at a given point in time

Be&e%t" '% a /'') SRS6


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machine to the we# server And can #e utili:ed as file management and spying software

which gives access to host machines file system >ou can upload or download files and

folders from and to server as easy as in your local drive !he system will #e a#le to detect

the &'( and protects the system from anonymous access !he project is purely #ased on

the research along with study and analysis of various similar types of e9isting

applications

7172 U"er C!a""e" a&) Chara,ter"t,"

Admin

!he Admin can carry out following functions?

Login

'elect 'erver *n"*ff

'elect *perations

'erver

!he 'erver can carry out following functions?

@eep data#ase of clients connected to network

Data#ase

!he Data#ase has following functions?

'tore .P address of client;s connected in network

'tore flags for e9ternal drives

717 Operat&/ Er'&(e&t

!he proposed system can operate on all -indows family !he reasons for choosing

the -indows environment are as follows?6

It 3'r*" '& '!)er:!e"" p'3er%0! har)3are



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+ost of us are still suffering through this recession !hat means making every

dollar count .f your P computer is still running well, there;s no urgency to

upgrade >es, you;ll get lots of cool new #ells and whistles with -indows B, #ut

if you;re getting your work done with P, don;t splurge on a new PC

A!! 8'0r pr'/ra(" 3'r*7


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727; Re('te Re/"tr8

!his module will access the remote regsutry of remotely accessed system and can fi9 the

registry issues also

727< L',* Re"'0r,e"

!his module will lock the remote system resources from the unauthorised clients

727= Start:+!! Pr',e""e"

!his module will work as a task manager !his will e9ecute or kill processes which are

running or which Admin wants to run on remote system

7 E>ter&a! I&ter%a,e Re40re(e&t"

771 U"er I&ter%a,e"

!he product must #e usa#le from the te9t command line, particularly under operating

systems where the command line is a standard common user interface 8owever, some

guidelines do apply?

?UI6 !he Action or operation that is to #e e9ecuted on the client side can #e e9ecuted

simply on clicking on the #utton provided in the window of the application Admin can

get processes running on the client machine or process that is e9ecuting to terminate

C'((a&)9!&e 'pt'&"6 .f command6line tools accept arguments, they will perform the

action according to the standards laid out in the coding standards, and should support

#oth short and long forms

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77 S'%t3are I&ter%a,e"

V"0a! St0)' 2@1@

+icrosoft isual 'tudio is an integrated development environment $.D

which allow the code editor and de#ugger to support $to varying degrees% nearly any

programming language, provided a language6specific service e9ists

JAVA

After studying and finali:ing the scope, in the technical feasi#ility we have analy:ed

possi#ility of using different 7AA technologies, and we have decided this architecture

to maintain following features from programming point of view

0% 7AA to facilitate **P programming style with platform independence

1% 7'P for we# interface which will facilitate dynamic page generation

2% (eans to use **P method in #etter way

3% Apache !*+CA! which is freeware and relia#le to facilitate -


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normal 8!+L with 7ava code pieces em#edded in them 7'P compiler is used to compile

7'Ps into 7ava 'ervlets

A 7'P compiler may generate a servlet in 7ava code that is then compiled #y the 7ava

compiler, or it may generate #yte code for the servlet directly

U"e '% JSP6

7'P technology is used to create dynamic we# pages, +L"8tml documents

For accessing data#ase information on a -e# server

-e are using 7'P, since our application is -e# (ased -e need a technology which

provides .ntra".nternet supports G 7'P is perfect technology for this

A-'0t We- Ser#er6

A computer that is responsi#le for accepting 8!!P re4uests from clients, which are

known as -e# #rowsers, and serving them 8!!P responses along with optional datacontents, which usually are -e# pages such as 8!+L documents and linked

o#jects$images,etc%

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Feat0re"6

Configura#ility of availa#le features #y configuration files or even #y an

e9ternal user interface

Authentication, optional authori:ation re4uest $re4uest of user name and

password% #efore allowing access to some or all kind of resources

8andling of not only static content as well as dynamic content

+odule support, in order to allow the e9tension of server capa#ilities #y

adding or modifying software modules which are linked to the server software

or that are dynamically loaded $on demand% #y the core server

Content compression $ie #y :ip encoding% to reduce the si:e of the responses

$to lower #andwidth usage, etc%

irtual 8ost to serve many we# sites using one .P address

Large file support to #e a#le to serve files whose si:e is greater than 1 I( on

21 #it *'

*ur Application is using Apache !omcat 5520 -e# 'erver for running our

application on client/s side

Apa,he T'(Cat

Apache !omcat, a we# container that functions as a we# server supporting 'ervlets and

7'Ps .t is developed at the Apache 'oftware Foundation $A'F%!omcat implements the

servlet and the 7ava 'erver Pages $7'P% specifications from 'un +icrosystems, providing

an environment for 7ava code to run in cooperation with a we# server .t adds tools for

configuration and management #ut can also #e configured #y editing configuration files

that are normally +L6formatted !omcat includes its own 8!!P server internally

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7; N'&%0&,t'&a! Re40re(e&t"

&sers have implicit e9pectations a#out how well the software will work !hese

characteristics include how easy the software is to use, how 4uickly it e9ecutes, how

relia#le it is, and how well it #ehaves when une9pected conditions arise !he

nonfunctional re4uirements define these aspects a#out the system

!he nonfunctional re4uirements should #e defined as precisely as possi#le *ften, this is

done #y 4uantifying them -here possi#le, the nonfunctional re4uirements should

provide specific measurements that the software must meet !he ma9imum num#er of

seconds it must take to perform a task, the ma9imum si:e of a data#ase on disk, the

num#er of hours per day a system must #e availa#le, and the num#er of concurrent users

supported are e9amples of re4uirements that the software must implement #ut do not

change its #ehavior

7;71 Per%'r(a&,e Re40re(e&t"

Performance re4uirement is statement that descri#es how well a function is to #e

e9ecuted or achieved, or how well it is to #e accomplished !he performance re4uirement

is generally couched in terms of degree, rate, 4uantity, 4uality, timeliness and so on

Performance re4uirements can also descri#e the conditions under which the function is to#e performed

.t is a simple fact that if performance is not a stated criterion of the system re4uirements

then the system designers will generally not consider performance issues -hile loose or

incorrectly defined performance specifications can lead to disputes #etween clients and

suppliers .n many cases performance re4uirements are never ridged as system that does

not fully meet its defined performance re4uirements may still #e released as other

consideration such as time to market

.n order to assess the performance of a system the following must #e clearly specified?

)esponse !ime? )esponse times $in case of interactive work% or processing times

$in case of #atch jo#s or scheduled activities% define how fast re4uests would #e



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processed !his response time has very great value in our project therefore we are

going to focus mainly on this re4uirement

-orkload? Again the #usiness case or e9isting process should #e the start of the

workload definition 8owever, it is not enough to state that Kthe system should #e

capa#le of supporting !housands of clients or Kthe system should #e a#le to

scan05clients"sec !hese statements are often good metrics at a high level

management level #ut do not define the work that the system must support !his

is particularly important as the mi9 of transaction affects the performance For

e9ample a D( system may easily handle 0J,JJJ transaction per hour #ut only

2,JJJ update transactions per hour

'cala#ility? .n one respect scala#ility is simply specified as the increase in the

system/s workload that the system should #e a#le to process !he scala#ility

re4uired is often driven #y the lifespan and the maturity of the system For

e9ample, a new $and hence immature% system could suffer an une9pected growth

in popularity and suffer from a significant increase in workload as it #ecomes

popular with new users +ore mature systems which represent improvements on

older systems are likely to have more accurately defined workloads and thus #e

less likely to suffer in this respect

Platform? A platform is defined as the underlying hardware and software

$operating system and software utilities% which will house the system .t is not

always the case that the designer will #e given a Kgreen field choice of what

platform on which to house the system .n some cases the customer may dictate

this choice or there may #e internal reasons $product strategy perhaps% that will

constrain the designer/s freedom .t may also #e the case that the system will

re4uire various generic products to #e used in which case the performance ofthese must also #e specified

7;72 Sa%et8 Re40re(e&t"



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'tatically ensuring safety properties of -e# applications is #ecoming increasingly

important as the -e# #ecomes the dominant platform for the construction of large, multi6

user applications .n particular, -e# applications should #e provided with at least the

same guarantees of static safety as in preceding development paradigms= the current

failure to do so leads to -e# application users #eing forced to endure failure modes that

would never #e accepted from conventional applications

-e have categori:ed important safety properties of -e# applications as follows?


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Data Tra&"(""'& Se,0rt8

-hen confidential or sensitive data is passed #etween the 'erver6Client and the -e#

server, the 8!!P' $''L over 8!!P% protocol will #e used ''L provides server

authentication, data encryption $over the wire%, and data transmission integrity

Data-a"e Se,0rt8

-e are providing minimum privileges to -e# applications to access data#ase

o#jects $ie ta#les, views, stored procedures% For e9ample, if the -e# application

needs read6only access to a specific data#ase ta#le, the data#ase permissions

should #e set accordingly as opposed to giving the -e# application admin or

owner rights to the entire data#ase

.ndividual data#ase fields storing confidential or sensitive data $eg passwords,

social security num#er% store using encryption techni4ues

Pa""3'r) Re40re(e&t"

-e are providing password authentication to Admin to login into our application -e

have decided some criteria to create an account?

Password for Admin must #e at least eight characters in length

Contain characters from three of the following four categories?

o &ppercase letters $A though M%

o Lowercase letters $a through :%

o Num#ers $J through H%

o 'pecial characters $, O, , Q, R, G, S, 6, T, U, V, %

Not #e the same as the logon or user name



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7;7; S'%t3are 0a!t8 Attr-0te"

A#a!a-!t86A system;s availa#ility, or uptime, is the amount of time that it is

operational and availa#le for use !his is specified #ecause some systems are

designed with e9pected downtime for activities like data#ase upgrades and

#ackups

E%%,e&,86 'pecifies how well the software utili:es scarce resources? CP&

cycles, disk space, memory, #andwidth, etc

F!e>-!t86.f the organi:ation intends to increase or e9tend the functionality of

the software after it is deployed, that should #e planned from the #eginning= it

influences choices made during the design, development, testing, and deployment

of the system

P'rta-!t86Porta#ility specifies the ease with which the software can #e installed

on all necessary platforms, and the platforms on which it is e9pected to run

I&te/rt86 .ntegrity re4uirements define the security attri#utes of the system,

restricting access to features or data to certain users and protecting the privacy of

data entered into the software

Per%'r(a&,e6!he performance constraints specify the timing characteristics of

the software Certain tasks or features are more time6sensitive than others= the

nonfunctional re4uirements should identify those software functions that have

constraints on their performance

Re!a-!t86 )elia#ility specifies the capa#ility of the software to maintain its

performance over time &nrelia#le software fails fre4uently, and certain tasks are

more sensitive to failure $for e9ample, #ecause they cannot #e restarted, or

#ecause they must #e run at a certain time%

Re0"a-!t86+any systems are developed with the a#ility to leverage common

components across multiple products )eusa#ility indicates the e9tent to which

software components should #e designed in such a way that they can #e used in

applications other than the ones for which they were initially developed



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R'-0"t&e""6 A ro#ust system is a#le to handle error conditions gracefully,

without failure !his includes a tolerance of invalid data, software defects, and

une9pected operating conditions

S,a!a-!t86'oftware that is scala#le has the a#ility to handle a wide variety of

system configuration si:es !he nonfunctional re4uirements should specify the

ways in which the system may #e e9pected to scale up $#y increasing hardware

capacity, adding machines, etc%

U"a-!t86


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7

3 -e# server ? !omcat

7=A&a!8"" M')e!"

7=71 Data F!'3 Da/ra("

A Data Flow Diagram $DFD% is a graphical representation of the flow of data through

an information system, modeling its process aspects *ften they are a preliminary step

used to create an overview of the system which can later #e ela#orated DFDs can also #e

used for the visuali:ationof data processing$structured design%

A DFD shows what kinds of data will #e input to and output from the system, where the

data will come from and go to, and where the data will #e stored .t does not showinformation a#out the timing of processes, or information a#out whether processes will

operate in se4uence or in parallel

Department of Computer Engineering 0B
http://en.wikipedia.org/wiki/Information_systemhttp://en.wikipedia.org/wiki/Data_visualizationhttp://en.wikipedia.org/wiki/Data_processinghttp://en.wikipedia.org/wiki/Data_processinghttp://en.wikipedia.org/wiki/Information_systemhttp://en.wikipedia.org/wiki/Data_visualizationhttp://en.wikipedia.org/wiki/Data_processing


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F/7DFD Le#e! @

F/7DFD Le#e! 1

F/7DFD Le#e! 2



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7=72 C!a"" Da/ra(

F/7 C!a"" Da/ra(

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7=7 State Tra&"t'& Da/ra(

F/7 State Tra&"t'&Da/ra( '% LAN C'&tr'!!er

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7 S8"te( I(p!e(e&tat'& P!a&

Appr'a,h

!he approach we have &sed -ater Fall +odel

The Water Fa!! M')e!

1 C'((0&,at'&6

!he software development process starts with communication #etween customer

and developer .n this phase we communicated with the user with following principles of

communication phase

-e prepared #efore the communication ie we decide agenda of the meeting for

concentrating on the online voting system

*ur leader led our team and drawn out all the re4uirement of from the user ie

what they is actually needed, what is input, output format of system

2 P!a&&&/6

.t includes complete estimation and scheduling and risk analysis .n this phase we planned a#out when to release the software, cost estimation, risk

in the project regarding voting application and mo#ile software toolkit

application

Finally in this phase we estimated the cost of the project including all e9penditure

of software, releasing software according to user deadline with his participation

M')e!&/6

.t includes detail re4uirement analysis and project design Flowchart shows

complete pictorial flow of program whereas algorithm is step #y step solution of pro#lem

-e analy:e the re4uirement of the user according to that we draw the #lock

diagrams of the system



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!hat is nothing #ut #ehavioral structure of the system using &+L 1J ie Class

Diagram, &se case Diagram, .nteraction diagram and &se case report

; C'&"tr0,t'&6

.t includes coding and testing steps?

a C')&/6

Design details are implemented using appropriate programming languages

.n coding we chosen the platform ie java and its application tools and for

wireless application ie mo#ile CAP!C8A, considering all the constraints of

software limitations in implementation

- Te"t&/6

!esting is carried out #y analy:ing the system ie we first develop the prototype

of the system and step #y step find out input and output errors such as interface

errors, performance errors, data structure errors, initiali:ation errors etc !herefore

here (lack (o9 testing strategy is useful


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F/7 The Water Fa!! M')e! '% LAN C'&tr'!!er



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Chapter ;

SYSTEM DESI?N

;71 S8"te( Ar,hte,t0re



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F/7 ?e&era! Ar,hte,t0re '% LAN C'&tr'!!er

*ur system can #e operated #y only one user vi: Admin !he Admin is re4uired to use his"hercredentials to login !hen the admin has options like start server, scan network and lockresources,access data#ase .f the patient selects scan network then he is provided a list of clients out

of which he is re4uired to select them !hen as per the selected clients the appropriate operationsand solutions are provided #y the system

.f the admin selects lock resources then he is provided a list of availa#le resources and he isre4uired to select any one out of them !hen he can have control on all resources connected and getthe precautions and solutions

;72 UML Da/ra("

;7271 U"e ,a"e )a/ra("

A use case diagram in the &nified +odeling Language $&+L% is a type of #ehavioral

diagram defined #y and created from a &se6case analysis .ts purpose is to present a

graphical overview of the functionality provided #y a system in terms of actors, their

goals $represented as use cases%, and any dependencies #etween those use cases

!he main purpose of a use case diagram is to show what system functions are performed

for which actor )oles of the actors in the system can #e depicted

&se case diagrams are formally included in two modeling languages defined #y the

*+I? the &nified +odeling Language $&+L% and the 'ystems +odeling Language

$'ys+L%



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F/7 U"e9Ca"e )a/ra( '% LAN C'&tr'!!er

;7272 Se40e&,e Da/ra(

A se4uence diagram in &nified +odeling Language $&+L% is a kind of interaction

diagram that shows how processes operate with one another and in what order .t is a

construct of a +essage 'e4uence Chart A se4uence diagram shows o#ject interactions

arranged in time se4uence .t depicts the o#jects and classes involved in the scenario and

the se4uence of messages e9changed #etween the o#jects needed to carry out the

functionality of the scenario 'e4uence diagrams typically are associated with use case

reali:ations in the Logical iew of the system under development

'e4uence diagrams are sometimes called event diagrams, event scenarios, and timing

diagrams

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F/7 Se40e&,e )a/ra( '% LAN C'&tr'!!er

;727 A,t#t8 Da/ra(

Activity diagrams are graphical representations of workflows of stepwise activities and

actions with support for choice, iteration and concurrency .n the &nified +odeling

Language, activity diagrams can #e used to descri#e the #usiness and operational step6#y6

step workflows of components in a system An activity diagram shows the overall flow of

control Activity diagrams are constructed from a limited num#er of shapes, connected

with arrows !he most important shape types?

rounded rectangles represent activities=

diamonds represent decisions=

#ars represent the start $split% or end $join% of concurrent activities=

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a #lack circle represents the start $initial state% of the workflow=

An encircled #lack circle represents the end $final state%

Arrows run from the start towards the end and represent the order in which

activities happen

F/7 A,t#t8 )a/ra( '% LAN C'&tr'!!er

Chapter

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