tailieunhanh - Chapter 7: The Intranets and Extranets

Describe the relationship among the Internet, an intranet and an extranet. Discuss the role of firewalls for intranets and extranets. | Chapter 7 The Intranets and Extranets Learning Objectives Describe the relationship among the Internet, an intranet and an extranet Discuss the role of firewalls for intranets and extranets Discuss the functions of intranets Discuss the applications of intranets Describe the industries that use intranets Discover typical cases of intranet applications Identify the key element of extranets Identify the key technologies for tunneling Discuss the applications of extranets Describe typical industries that use extranets Discuss the business models for extranet applications Describe the concept of embedded extranets Learning Objectives (cont.) Automotive Network Exchange - the Largest Extranet Companies in the automotive market swap supply and manufacturing data Involve 10,000+ companies Include CAD/CAM file transfers, Electronic Data Interchange (EDI), e-mail, and groupware The network’s EDI element alone will slice $71 from the cost of designing and building each car Savings of $1 . | Chapter 7 The Intranets and Extranets Learning Objectives Describe the relationship among the Internet, an intranet and an extranet Discuss the role of firewalls for intranets and extranets Discuss the functions of intranets Discuss the applications of intranets Describe the industries that use intranets Discover typical cases of intranet applications Identify the key element of extranets Identify the key technologies for tunneling Discuss the applications of extranets Describe typical industries that use extranets Discuss the business models for extranet applications Describe the concept of embedded extranets Learning Objectives (cont.) Automotive Network Exchange - the Largest Extranet Companies in the automotive market swap supply and manufacturing data Involve 10,000+ companies Include CAD/CAM file transfers, Electronic Data Interchange (EDI), e-mail, and groupware The network’s EDI element alone will slice $71 from the cost of designing and building each car Savings of $1 billion a year for the Industry © Prentice Hall, 2000 Chrysler will pay for fewer T1 Lines and satellite connections Standardizing one protocol-IP will reduce support costs The time it takes to turn around an order will be much shorter The faster the parts come in, the faster the cars leave the assembly line, the larger the customer satisfaction and manufacturer’s profit Business-to-business virtual private networks (VPN) are used Automotive Network Exchange - the Largest Extranet (cont.) © Prentice Hall, 2000 The Internet The Internet is a public and global communication network that provides direct connectivity to anyone via a Local Area Network (LAN) and an Internet Service provider (ISP). Access to the Internet is not restricted to anyone. This lack of control may result in an information overload. Due to its vast scope and openness, the information is difficult to locate. Users need effective and efficient search engines to navigate the sea of information . There is no .