1

The Internet

Structure & evolution

Messaging

Addressing

E-Commerce

Intranets & Internets

2

Background

Department of Defense Research vehicle Arcane commands Peer to peer

Harvard

USC

U of M

MITDuke

Northeastern

3

What Makes the Web Special?

Graphical InterfaceHTTP

– Client server

Addressing Commercialization

*World Wide Web

WWW*

4

Linked Networks

MCI* Backbone AT&T** Backbone

MAE* EastMCI

Vienna, VA

Sprint Backbone

MAE* WestMCI

San Jose

Metropolitan Area Exchanges: Sites with routers where ISPs exchange traffic. Also called network access points, NAPs.

Carriers monitor their Networks at NOCs, Network Operations Centers

Sprint NAPPennsauken NJ

* MCI to be purchased by Verizon Communications** AT&T to be purchased by SBC

5

Figure 7.1Web server, application server, content management software, and content database.(Courtesy of Ektron, Inc.)

Keeping up With Changes on Corporate Web Sites

6

Internet Connections to a Cable Multiple System Operator (MSO)

7

E-Mail, Chats & Instant Messaging

• HTML formatted email

• Impact of attachments• IM & presence for

businesses• Teenagers & chat• Multi-media

messaging

8

Figure 7.3Links between hosting companies and the Internet.

9

BLOGs, Craig’s List & Really Simple Syndication

• Web logs

• Impact on news media

• New distribution– Push Vs. pull– Pod casting via really simple syndication (RSS)

• Will newspapers disappear?

10

Figure 7.4Distance learning company hosting applications and course material for schools.Figure courtesy Blackboard, Inc.

11

Phishing and Identity Theft

• Are our identities safe?

• Which of our organizations’ identities have been forged by phishers?

• How can we protect our identities?

12

E-Commerce

Who shops online?What sells?

Pornography Gambling Retail products Ads on search sites

Privacy Cookies Surveys Database sales

13

Summing Up

Describe the structure of the Internet How has the Internet changed the way

we do business?We live?

What are the biggest opportunities for e-commerce? Who are the major competitors & future winners? How will the Internet change life for the next

generation?