The document discusses the history and evolution of telecommunication networks and the Internet. It describes how the Internet has grown from a few servers in 1991 to over 46 million today. It also outlines several popular Internet applications like email, browsing the World Wide Web, and various online communication tools. Finally, it discusses the business value of networks like the Internet, intranets, and extranets in enabling communication, collaboration and sharing information.

2. Business value of
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Telecommunication DU
LE
O
Networks M

3.  The basics of doing business on the
internet
 The Internet Revolution
 The business value of Internet,
Intranet, Extranet
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4. The Internet Revolution
 The Internet has become a global information
superhighway
 Internet made up of Millions of smaller, private networks
operating independent of, or in harmony with, each other
 10 servers in 1991 to over 46 million today
 Sustained growth in excess of 1 million servers per month
 No central computer system
 No governing body
 Based on common standards
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5. Internet Networking Technologies
 Internet networking technologies are being
used as technology platform
 Web browser suites
 HTML Web page editors
 Network management software
 Firewalls
 Being applied in Internet, intranet, and
extranet applications
 Reinforces previous move toward client/server
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networks based on open-systems architecture
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6. The InTerneT
 Internet is the most influential development over
the past two decades.
 It is derived from the concept of Internetworking,
linking hundreds of individual networks all over
the world.
 Frequently referred to as the “Net”.
 The Internet is a global network of computer
networks linked together so that its users can
share data resources.
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7. The
InTerneT
 The Internet provides instant and local access to an
amazing number of organizations, individuals, and
information resources.
 No one owns the Internet and it has no formal
management organizations.
 Originally the Internet was an initiative sponsored by
the Department of Defense to link its labs with
American universities.
 The Internet does not have a central computer system.
The Internet does not have a governing body.
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8. The InTerneT
 A network of
networks
 Popular uses
 E-mail
 Instant messaging
 Browsing the World
Wide Web
 Newsgroups and
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9. The Internet (continued)
 The business value of the Internet
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10. Internet2
 Next generation of the Internet
 High-performance
 Different infrastructure than the current Internet
 Will not replace the current Internet
 In use at over 200 universities, scientific institutions,
communications corporations
 May never become totally open
 Users are connected via Abilene, a backbone
that supports throughput of 10 Gbps

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11. Internet Service
Providers
 ISP
 A company that specializes in providing
easy access to the Internet
 For a monthly fee, provides software,
user name, password, and Internet
access
 ISPs themselves are connected to one another
through network access points
 One ISP can easily connect to another
to obtain addresses of websites or user
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nodes Prof. Guru Aradhya

12. Major Internet Services
• E-mail: Person-to-person
messaging; document
sharing
• Usenet newsgroups:
Discussion groups on
electronic bulletin boards
• LISTSERVs: Discussion
groups using e-mail mailing
list servers
• Chatting and instant
messaging: Interactive
conversations
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Table 8-6

13. Major Internet Services (Continued)
• Telnet: Logging on to one computer
system and doing work on another
• FTP: Transferring files from computer
to computer
• World Wide Web: Retrieving,
formatting, and displaying information
(including text, audio, graphics, and
video) using hypertext links
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14. World Wide
Web
 Web is the Internet systems for hypertext linking,
allowing users to move from one Internet site to
another.
 It is a system with universally accepted standards for
storing, retrieving, formatting and displaying
information.
 Web pages are online documents that feature
clickable hypertext links that transport you to
documents, graphics or other Web pages.
 Internet browser software's such as Netscape
Navigator or Internet Explorer enable end users to
surf the Web.
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15.  Anyone using a Web browser can access any of
millions of Websites.
 To access a Web site the user must specify Uniform
Resource Locator (URL) which is the address of a
specific resource on the Internet.
 http stands for hypertext transport protocol, which
is the communications standard to transfer pages on
the Web.
 Web sites are created by Web masters.
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16. Internet ApplIcAtIons
 Most popular Internet
applications and uses
 E-mail
 Instant messaging
 Browsing the Web
 Newsgroups
 Chat rooms
 Publish opinions, subject
matter, creative work
 Buy and sell
 Downloading (data,
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17. WhAt Are people doIng on
the Internet?
 E-mail: You can use e-mail to communicate with
your friends, to exchange messages.
 Surf: You can browse websites and resources for
information, entertainment and e-commerce.
 Chatting: Allows two or more people who are
simultaneously connected to the Internet to hold live,
interactive conversations. (Ex: Yahoo! Messenger)
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19. WhAt Are the people
doIng on the Internet?
 Discussion: Participating in
discussions on thousands
of topics.
 Download: Allows to
transfer data files,
software, articles, picture,
music, video to your
computer system.
 Buy and sell: Buying and
selling via e-commerce
retailers, wholesalers (Ex:
E-bay).
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20. WhAt Are the people
doIng on the Internet?
 Search for information:
Several companies have
created directories of Web
sites and their addresses,
providing search tools for
finding information.
 Another tools, called search
engines can find Web sites.
(Ex: Yahoo!, Google, Alta
Vista).
 Play games, watch TV,
conduct free phone calls,
listen to radio, etc.
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21. Business use of the Internet
 E-commerce is the major
business use of the Internet.
 For marketing, sales and
customer relationship
management applications,
applications in engineering and
human resources.
 Enterprise communication and
collaboration
 Forming new business
partnerships
 Providing customer and vendor
support
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22. Searching and Finding Information on the Internet
• The Internet lowers search costs
• Search engines
• Intelligent agents and shopping bots
• Broadcast and push technology
• The semantic Web
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23. Business Use of the Internet
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24. IntrAnets
 Within an organization
 Uses Internet technologies
 Business value of Intranets
 Used for information sharing, communication,
collaboration, & support of business processes.
 Web publishing
 Comparatively easy, attractive, & lower cost alternative
for publishing & accessing multimedia business
information
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25. IntrAnets
 An intranet is a computer network within an organization that
uses Internet technologies for members of the organization
only
 If a company has an existing network, than establishing an
intranet is very inexpensive. All that is required is the server
software and browsers for clients.
 Most of the technologies mentioned earlier are all available at
no charge
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26. Intranets
 An intranet is an internal
organizational network that
provides access to data across a
business firm.
 Business Operations &
Management
 Used for developing &
deploying critical
business applications
 Supports operations and
managerial decision
making
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27. Intranets
 Intranets are protected
by…
 Passwords
 Encryption
 Firewalls
 Customers, suppliers,
and other business
partners can access an
intranet via extranet
links.
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28. INTRANET
 Intranets require no special hardware. Intranet software
technologies is the same as that of the Web. The Web browsers and
Web server software for intranets are the same as those on the
Web.
 Ex: Hewlett Packard (HP) uses an intranet for many human
resource functions. The company’s 88,000 employees in 150
countries can access HP’s intranet to fill out forms about
beneficiaries, address changes, tax withholdings, etc.
 Ex: Boeing offers over 200,000 employees training via the Center
of Leadership and Training (CLT) intranet sites. It opens up the
courses and training opportunities for employees worldwide. By
using the CLT intranet, employees can choose from a wide range
of course offerings.
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29. INTRANET
 An Intranet is a private and internal network using Web
technologies inside an organization.
 It can be considered a private internal Web, which limits
viewing access to authorized users within the organization.
 It enables employees to communicate, share information and
work together on common projects regardless of their physical
location.
 Employees access information on the Intranet through a Web
browser. This information cannot be viewed by users outside
the organization. Thus it is separated from the visible, publicly
accessible Web.
 It is protected by security measures such as passwords,
firewalls.
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30. Information Most Frequently Found in
Corporate Intranets
 Customer databases
 Corporate policies and procedures (Winthrop)
 Corporate phone directories
 Human resource forms (Winthrop)
 Training programs
 Product catalogs and manuals (Winthrop)
 Data warehouse and decision support access
 Internal purchase orders (Winthrop)
 Travel reservations
 Knowledge management databases
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31. Functional Applications of the Intranet
Idea
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32. The Role of Intranets
 Many companies have sophisticated and widespread
intranets, offering…
 Detailed data retrieval
 Collaboration
 Personalized customer profiles
 Links to the Internet
 Intranets use Internet technologies
 Web browsers and servers
 TCP/IP network protocols
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 HTML publishing and databases

33. Intranets as Information Portals
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34. Business Value of Intranets
 Intranets support
 Communications and collaboration
 Business operations and management
 Web publishing
 Intranet portal management
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35. Communications and Collaboration
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36. Business Operations and
Management
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37. Web publishing
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38. Intranet portal management
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39. extranets
 Network links that use Internet
technologies to interconnect the
firm’s intranet with the intranets of
customers, suppliers, or other
business partners
 Consultants, subcontractors,
business prospects, & others
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40. Extranets
 An extranet is similar to an intranet but it enables the firm’s
business partners (e.g., suppliers or customers) to access the
firm’s intranet
 Once an organization links its network to the Internet theoretically
anyone can access the firm’s network. With respect to an extranet,
firms want to restrict access to business partners. A virtual private
network provides the security mechanism for accomplishing this.
A VPN uses a combination of public and private lines to build a
secure extranet. The link between the firm’s network and the
Internet is often called a “tunnel.” A VPN provides a secure
tunnel.
 VPNs are also required for firms with extensive intranets (multi-
site firms)
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41. EXTRANET
 Extranets are private intranets extended to authorized users
outside the company.
 It is accessible to authorized outsiders.
 Firms use such networks to coordinate their activities with
business partners, suppliers, customers for making purchases,
collaborating on design and other interorganizational work.
 An extranet connects the intranets of two or more business
partners.
 Extranets are useful for linking organizations with suppliers,
customers or business partners.
 Extranets make customer and supplier access of intranet
resources a lot easier and faster than previous business methods.
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42. Extranets
 Network links that use Internet technologies to
connect the intranet of a business to the intranets of
another
 Virtual Private Networks
 Direct private network links, or private secure Internet links between
companies
 Unsecured Extranet
 Link between a company and others via the Internet,
relying on encryption of sensitive data and firewall
security systems
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43. Virtual Private Networks
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44. Extranet
Connectivity
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45. Business Value of Extranets
Web browser technology makes customer and
supplier access to intranets easier and faster
Another way to build and strengthen strategic
relationships
Enables and improves collaboration between a
business, customers, and partners
Facilitates
online, interactive product development
and marketing
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46. EXTRANETS (CONTINUED)
 Business value
 Improve communication
with customers and
business partners.
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47. EXTRANETS (CONTINUED)
 Gain competitive
advantage in
 Product development
 Cost savings
 Marketing
 Distribution
 Leveraging their
partnerships
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48. EXTRANET APPLICATIONS
 Managing the supply chain
 Collaborating with other organizations in the development of
new products/services
 Sharing product catalogs exclusively with wholesalers.
 Sharing news and other information of shared interest
exclusively with business partners (e.g., production
schedules, forecasts)
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49. Characteristics of The Internet, Intranet, and
Extranet
FOCUS TYPE OF USERS ACCESS
INFORMATION
The Internet External General public Any user with an
communications Internet
connection/public
and not restricted
The Intranet Internal Employees Authorized
employees/private
and restriction
The Extranet External Business Authorized
partners, business
customers, partners/private
suppliers and restriction
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