电子商务导论（双语） imch07.docx

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1、Chapter 7Intranet and ExtranetQuestions for Review1. The Internet is a public and global network that provides direct connectivity to anyone over a LAN or Internet Service Provider. An intranet is a corporate LAN or WAN that uses TCP/IP protocol network such as the Internet. However, the intranet is

2、 secured behind a companys firewall, which controls external access.An extranet is an extended intranet that links intranets in different locations. An extranet runs over the public Internet with a secure and private transmission technique between associated intranets.2. The Internet allows unlimite

3、d public access to the network without any restrictions. Intranet allows only authorized persons to access the restricted corporate information. Extranet links only authorized groups (indivuals or intranets) from collaborating companies to allow the access for sharing infbnnation.3. A firewall fbr i

4、ntranets is a software and/or hardware that allow only those external users with specific characteristics to access a protected network. The firewalls for an extranet additionally perfbnn the encryption and decryption of packets to ensure the secure and private transmission over the Internet. See al

5、so chapter 11.4. The necessary software to install an intranet are Web servers, browsers, Web publishing tools, connection to back-end databases, TCP/IP network (LAN or WAN), and firewalls.5. The generic functions of intranets are publishing the corporate/department/individual Web pages, database ac

6、cess, search engines and directories, interactive communication, document distribution and workflow, groupware, telephony, integration with EC, and extranets.6. Electronic commerce, customer service, reduced time to market, enhanced knowledge sharing, enhanced group decision and business process, em

7、powerment, virtual organizations, software distribution, project management, training, facilitate transaction processing, eliminate paper-based information delivery, and administrative process support.7. Banking, brokerages, chemicals and oil, construction engineering, consumer goods, education, env

8、ironment, food and beverage, travel, manufacturing, health care, information technology, insurance, media/entertainment, pharmaceuticals, retail, and telecommunication. See also Appendix 7.1.8. According to Killen & Associates, sales of intranet and extranet software, hardware, and services reached

9、$7.76 billion in 1997, and is expected to reach $20 billion by 2000. Extranets are expected to be the platform of more than eighty percent of B2B EC by 2001.9. The key planning factors of extranets are coordination between a company and its business partners, security fbr secure transmission between

10、 the intranet of the company and authorized partners, and effective outsourcing strategy.10. The major components of extranets are intranets, Web servers, firewalls, ISP, tunneling technology, interface software, and business applications.11. Tunneling is the transmission of data across the Internet

11、 securely by authenticating and encrypting all IP packets.12. VPN is a secure network on the Internet established by using the tunneling techniques. The secured network can be used as if it is a private network between the associated intranets although it runs on the Internet.13. Enhanced communicat

12、ions, productivity enhancements, business enhancements, cost reduction, and information delivery.14. In addition to the applications on the intranet, the following infonnation is dealt on the extranet: corporate policies and procedures, document sharing, corporate phone directory, human resource for

13、ms, training programs, customer databases, product catalogs and manuals, data warehouse and decision support access, image archive, purchase orders, enterprise suits, and travel reservation services.15. Brokerages, insurance, infbnnation technology, chemicals and oils, consumer goods, food and bever

14、age, general manufacturing, pharmaceuticals, retail, education, environmental, health care, media/entertainment, telecommunication, transportation, and utilities. See Appendix 7.2.16. Connect business customers, dealers, branch offices, partners, service institutions, and suppliers. Share knowledge

15、among geographically dispersed corporate employees. Track shipping status. Reduce the design cycle time and product development time. Embedded extranets.Questions for Discussion1. The external users need to pass the firewalls, which authorize the access control, filter packets, and adopt the proxy s

16、ervice.2. The VPN can be realized by tunneling the intranets, which means that the standard IPs packet are encrypted and then encapsulated inside of the TCP/IP packets. The encrypted packet can only be decrypted at the designated destination.3. The ANX extranet has adopted the IPSec protocol, and ve

17、rifies the extranet service providers to issue the ANX-certificate if the requirement is met. So the ANX participants may simply acquire the extranet service from ANX-certified vendors.4. Yes, the extranet is more economical than a leased-line based WAN because the extranet can run on the free Inter

18、net. As the security technology for extranet solutions mature, the Internet based extranet will replace the WAN.5. Establish abusiness model of connecting the branches, customers, suppliers, and partners. Review the current network connected with them if any, and plan to replace the current network

19、with an extranet. Plan the scope of information sharing with the participating entities, and select the secure technology for the implementation of an extranet.6. AMP of Harrisburg in Pennsylvania connects 15,000 customers worldwide.7. General Motors connects 8,600 North American dealers with GM fac

20、tories.8. VHA is an alliance of eighteen hospitals and 1,400 health care organizations to collaborate and access 350 suppliers.9. Cisco is connected with FedEx by extranet. The extranet is embedded to the tracking system of Cisco so that Ciscos customer can trace the status of product manufacturing

21、and delivery seamlessly.10. Caterpillar customers, i.e. farm companies, can access the extranet to retrieve and modify detailed order information while a vehicle remains on the assembly line. Such remote collaboration can reduce the cycle-time delays.11. Cisco links its tracking system with that of

22、FedEx by an embedded extranet so that Ciscos customers can track the delivery process through Ciscos own Web site.The syndicated loans are handled by the extranet IntraLoan, which is owned by BancAmerica Securities, Inc. The IntraLoan coordinates the activities of thirty-five lending institutions, w

23、hich would like to invest the companies like Compaq.12. An Internet Service Provider can become an extranet solution provider. To be so, the ISP needs to be equipped with firewalls and encryption technologyInternet Exercises1. Try to access any intranet site like Charles Schwab ().2. Try to access a

24、ny extranet site like Merrill Lynch (.3. Examine NuSkin International () and Rite Aid () which connect with suppliers by extranets.4. Join the ANX project, and expose your company to automakers. You need to develop a special relationship with a deliverer like FedEx and develop an embedded extranet w

25、ith FedEx to be able to support the order tracking system to the automakers.5. Kinko connects its approximately 1000 branch offices with 25,000 employees worldwide by extranet.6. Embedded extranet can solve the problem. For instance, the customers of Cisco can access Ciscos server to trace not only

26、the progress at Cisco, but also the progress at FedEx.7. Adopt the extranet to connect the manufacturer with customers. For instance, Caterpillar allows the customers to retrieve and modify detailed order information through the extranet.8. Install interactive kiosks in dealerships and shopping mall

27、s using extranet. GM has connected 8,600dealers with GM factories.9. Compaq Computer secured a $4 billion syndicated loan mostly over the extranet IntraLoan of BancAmerica. The IntraLoan coordinate the activities of 35 lending institutions investing in the Compaq loan. Since July 1997, tens of billi

28、ons of dollars are loaned on the extranet in this way.Team Exercises1. The extranet technology will be the same fbr both teams. However, the suppliers need to consider the language of their customers9 country and time and cost of delivery.2. Extranet is the best platform to connect the supply chain

29、between buying and supplying companies worldwide. The extranet can operate with intranets seamlessly.Real World Case: Cadence Design Systems - ROI of Intranet 1766 Percent1. Cadence was used not only to sell a single product, but also the customers entire product development cycle.2. The intranet On

30、Track maps each phase of the sales process with supporting materials and reference information.3. By adopting the intranet OnTrack to support the customers entire product development cycle, Cadence has achieved the return on investment of 1,766 percent.4. To unify the technology with the process, th

31、e combination of an easy-to-use technology, a refined process, and the appropriate personnel and support systems created a single, coherent system that could support the new sales paradigm.5. Cadence designed a process and infrastructure that could satisfy 80 percent rather than 100 percent of sales situations. So the investment of intranet could be cost effective.6. With OnTrack, a new sales rep learns in two days training what it previously took months to learnwith another system.