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Internet, Intranet andExtranets
Presentation by :
Othmane Zeikel Joudal Rachid
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PLANO 1. What is the internet
O 2. Hardware and Software of Internet
O 3.Application Of internetO 4.Advatanges of internet
O 5.Disadvatanges of internet
O 6. Intranet(introduction,Application
on,Firewall etc)
O 7.Extranet (same things)
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What is Internet ?O It is aGlobal network of computers,
(servers or clients).
to exchange information.
O It is a "network of networks"that includesmillionsof private and public, academic, business,and government networks (local or Global),
linkedby copper wires, wireless connections, andother technologies.
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Hardware and Software of
Internet
Variety of hardwareand softwareare used to
make Internet functional.
O Modem
Device that enables computers to communicate
through phone lines.
When we start internet the our modem
communicatesto modem of ISP.
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O Computer
In addition to a modem, you need a
client capable of handling multiple datatypes.
O Software
Twotypesof softwaresrequired to
enable your PC as an Internet PC.O Communication softwaretoestablish
connection
O Client software forbrowsing, e-mail,
news.
these softwares are provided with windows itself.
Hardware and Software of
Internet
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Applications Of InternetO Download programs and files
O E-Mail
O Voice and Video ConferencingO E-Commerce
O File Sharing
O Information browsing
O Search the web addresses for accessthrough search engine
O Chatting and many more
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Disadvantages of
InternetO Theft of personal informationsuch as name, address, credit
card number etc.
O Virus threatsnothing but a program which disrupts the normalfunctioning of your system.
O Spammingrefers to receiving unwanted e-mails in bulk, whichprovide no purpose and needlessly obstruct the entire system.
O Pornography This is perhaps the biggest threat related tochildrens healthy mental life. A very serious issue concerning
the Internet.
Though, internet can also create destruction and itscan be very fatal,
the advantagesof it outweigh its disadvantages.
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Intranet
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What is Intranet ?
O Internal company network that uses
Internet standards (HTML, HTTP &TCP/IP protocols) & software.
O Accessed only by authorized persons,
especially members or employees of theorganization
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Intranet SecurityTwo levels of Security required:
O InternalIt can be imposed by Public Key Security
& Encryption Key.
O External
Through Firewall.
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What is Firewall ?O Security device located between firms
internal network (intranet) & external
network (internet).
O Regulates access into & out of a
companys network based on a set of
rules.
Note : needs to be upgraded from time to time to
check latest potential security problems.
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Applications of IntranetO Sharing of company policies/rules &
regulations
O
Access employee databaseO Distribution of circulars/Office Orders
O Access product & customer data
O Sharing of information of common interest
O
Launching of personal/departmental homepages
O Submission of reports
O Corporate telephone directories
http://www.cio.com/WebMaster/strategy/http://www.cio.com/WebMaster/strategy/8/13/2019 Presentation (Internet Intranet Extranet)
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advantages
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Disadvantages
Information overload lowers productivity
True purpose of the Intranet is unknown to many
employees/departments
Hidden or unknown complexity and costs
Productivity
problem
Unauthorized access
Abuse of access
Denial of service
Security
problem
A company may not have person to update their
Fear of sharing information and the loss of control
Management
problem Intranet on a routine basis
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Extranet
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What is Extranet ?
O Extranet is an Intranet for outside authorized users
using same internet technology.
O Inter-organizational information system.
O enable outsiders to work together with companys
employees.
O open to selected suppliers, customers & other business partners
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Examples..O Dealers/distributors have access to
product files such as :-
1. product specification,2. pictures,
3. images, etc.
to answer the queries of the customer.
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Components of extranets ..
Some basic infrastructure componentssuch as the internet Including :-
O TCP/IP protocols,
O E-mail,
O Web-browsers,
O External business partners &
O Tele-commuting employees place order,check status & send E-mail.
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Benefits of Extranet
O Improved quality.
O lower travel costs.
O lower administrative & other overheadcosts.
O reduction in paperwork.
O delivery of accurate information on time.
O improved customer service.
O better communication.O overall improvement in business
effectiveness.
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Disadvantages
O The suppliers & customer who dont
have technical knowledge feel problem.
O Faceless contact.O Information can be misused by other
competitors.
O Fraud may be possible.
O Technical Employees are required.
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Clients, partners, customers
Layered System View
IntranetExtranet
Internet
Corporate members
Global society competitors
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THE ENDThank You