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Business value of

Telecommunication Networks MODULE-4

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The basics of doing business on the internet

The Internet Revolution The business value of Internet,

Intranet, Extranet

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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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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 networks based on open-systems architecture

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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.

The InternetThe Internet

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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.

The The InternetInternet

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The InternetThe Internet A network of A network of

networksnetworks Popular usesPopular uses

E-mailE-mail Instant messagingInstant messaging Browsing the World Browsing the World

Wide WebWide Web Newsgroups and chat Newsgroups and chat

roomsrooms8

The Internet (continued)The Internet (continued)

The business value of the InternetThe business value of the Internet

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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

Infinite bandwidth 10

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 nodes

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Major Internet Services Major Internet Services

Table 8-6

• 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 12

• 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

Major Internet Services (Continued)

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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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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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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, software, reports, pictures, music, videos)

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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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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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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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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

Business use of the Internet

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• The Internet lowers search costs

• Search engines

• Intelligent agents and shopping bots

• Broadcast and push technology

• The semantic Web

Searching and Finding Information on the Internet

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Business Use of the Internet

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IntranetsIntranets Within an organizationWithin an organization Uses Internet technologiesUses Internet technologies Business value of IntranetsBusiness value of Intranets

Used for information sharing, communication, Used for information sharing, communication, collaboration, & support of business processes.collaboration, & support of business processes.

Web publishingWeb publishing Comparatively easy, attractive, & lower cost alternative Comparatively easy, attractive, & lower cost alternative

for publishing & accessing multimedia business for publishing & accessing multimedia business informationinformation

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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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IntranetsIntranets

An intranet is an internalorganizational network that provides access to data across a business firm. Business Operations & Business Operations &

ManagementManagement Used for developing & Used for developing &

deploying critical deploying critical business applicationsbusiness applications

Supports operations and Supports operations and managerial decision managerial decision makingmaking

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Intranets are protected by… Passwords Encryption Firewalls

Customers, suppliers, and other business partners can access an intranet via extranet links.

Intranets

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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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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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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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Functional Applications of the Intranet Idea

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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 HTML publishing and databases

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Intranets as Information Portals

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Business Value of Intranets Intranets support

Communications and collaboration

Business operations and management

Web publishing

Intranet portal management

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Communications and Collaboration

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Business Operations and Management

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Web publishing

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Intranet portal management

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ExtranetsExtranets

Network links that use Internet Network links that use Internet technologies to interconnect the technologies to interconnect the firm’s intranet with the intranets of firm’s intranet with the intranets of customers, suppliers, or other customers, suppliers, or other business partnersbusiness partners

Consultants, subcontractors, Consultants, subcontractors,

business prospects, & othersbusiness prospects, & others

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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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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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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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Virtual Private Networks

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Extranet Connectivity

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Business Value of ExtranetsWeb 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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EXTRANETS (CONTINUED)EXTRANETS (CONTINUED)

Business valueBusiness value Improve communication Improve communication

with customers and with customers and business partners.business partners.

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EXTRANETS (CONTINUED) Gain competitive

advantage in Product development Cost savings Marketing Distribution Leveraging their

partnerships

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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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FOCUS TYPE OF INFORMATION

USERS ACCESS

The Internet External communications

General public Any user with an Internet connection/public and not restricted

The Intranet Internal Employees Authorized employees/private and restriction

The Extranet External Business partners,

customers, suppliers

Authorized business partners/private and restriction

Characteristics of The Internet, Intranet, and Extranet

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