1 © Prentice Hall, 2000 Chapter 11 Infrastructure for Electronic Commerce 2 © Prentice Hall, 2000 Learning Objectives Describe the protocols underlying Internet client/server applications Compare the functions and structures of Web browsers and servers Discuss the security requirements of Internet and e- commerce applications, and how are these requirements fulfilled by various hardware and software systems Describe the functional requirements for online selling and what are the specialized services and servers that perform these functions 3 © Prentice Hall, 2000 Describe the business functions that Web chat can fulfill and list some of the commercially available systems that support chat Understand the ways in which audio, video and other multimedia content are being delivered over the Internet and to what business uses this content is being applied Learning Objectives (cont.) 4 © Prentice Hall, 2000 A Network of Networks = Internet Internet is a network of hundreds of thousands interconnected networks Network Service Providers (NSPs) runs the backbones Internet Service Providers (ISPs) provide the delivery subnetworks 5 © Prentice Hall, 2000 Internet Network Architecture NAP NAP NAP NAP ISP ISP ISP ISP ISP ISP ISP ISP ISP ISP 0 Backbone 5 © Prentice Hall, 2000 6 © Prentice Hall, 2000 Internet Protocols Protocols - A set of rules that determine how two computers communicate with one another over a network The protocols embody a series of design principles Interoperable— the system supports computers and software from different vendors. For e-commerce this means that the customers or businesses are not required to buy specific systems in order to conduct business. Layered— the collection of Internet protocols work in layers with each layer building on the layers at lower levels. Simple— each of the layers in the architecture provides only a few functions or operations. This means that application programmers are hidden from the complexities of the underlying hardware. End-to-End— the Internet is based on “end-to-end” protocols. This means that the interpretation of the data happens at the application layer and not at the network layers. It’s much like the post office. 7 © Prentice Hall, 2000 TCP/IP Architecture Application Layer FTP, HTTP, Telnet, NNTP Transport Layer Transmission Control Protocol (TCP) User Datagram Protocol (UDP) Internet Protocol (IP) Network Interface Layer Physical Layer © Prentice Hall, 2000 8 © Prentice Hall, 2000 TCP/IP Solves the global internetworking problem Transmission Control Protocol (TCP) Ensures that 2 computers can communicate with one another in a reliable fashion Internet Protocol (IP) Formats the packets and assigns addresses packets are labeled with the addresses of the sending and receiving computers 1999 version is version 4 (IPv4) Version 6 (IPv6) has just begun to be adopted 9 © Prentice Hall, 2000 Domain Names Reference particular computers on the Internet Divided into segments separated by periods For example, in the case of “www.microsoft.com” “www” is the specific computer “com” is the top level domain “microsoft” is the subdomain Internet Assigned Numbers Authority (IANA) controls the domain name system Network Solutions, Inc. (NSI) issues and administers domain names for most of the top level domains 10 © Prentice Hall, 2000 Internet Client/Server Applications Application Protocol Purpose E-mail Allows the transmission of text messages and binary attachments across the Internet. Simple Mail Transport Protocol (SMTP) Post Office Protocol version 3 (POP3) Multipurpose Internet Mail Extensions (MIME) File Transfer File Transfer Protocol (TP) Enables files to be uploaded and downloaded across the Internet. Chat Internet Relay Chat Protocol (IRC) Provides a way for users to talk to one another in real- time over the Internet. The real-time chat groups are called channels. UseNet Newsgroups Network News Transfer Protocol (NNTP) Discussion forums where users can asynchronously post messages and read messages posted by others. World Wide Web (Web) Hypertext Transport Protocol (HTTP) Offers access to hypertext documents, executable programs, and other Internet resources. [...]... the following tools: Outlook Express for e-mail reading FrontPage Express for authoring of HTML Web pages Net Meeting for collaboration Netscape Navigator 4.6 suite consists of the browser plus the following components: Messenger for e-mail reading Composer for authoring HTML Web pages Collabora for news offerings Calendar for personal and group scheduling Netcaster for push delivery of Web pages © Prentice... e -commerce solutions © Prentice Hall, 2000 32 Electronic Catalogs and Merchant Servers The virtual equivalents of traditional product catalogs Commonly include: Templates or wizards for creating a storefront and catalog pages with pictures describing products for sale Electronic shopping carts that enable consumers to gather items of interest until they are ready for checkout Web-based order forms for. .. Selling on the Web Function Requirements for an Electronic Storefront Search for, discover, and compare products for purchase Select a product to be purchased and negotiate or determine its total price Place an order for desired products Have their order confirmed, ensuring that the desired product is available Pay for the ordered products (usually through some form of credit) Verify their credit and... third-party plug-ins for searching, user tracking, sale pricing, discounting, etc © Prentice Hall, 2000 35 Electronic Catalogs and Merchant Servers (cont.) Microsoft’s Site Server Commerce Edition Features of this product are: • Commerce Sample Sites providing templates for complete applications • Microsoft’s Wallet supporting a variety of digital currencies • Site Builder Wizard for stores with multi-level... Financial Network 34 Electronic Catalogs and Merchant Servers (cont.) Two of the best known products in this category iCat Electronic Commerce Suite Standard edition includes: • Catalog templates • Shopping carts • Product searching • Cross selling • Secure payment processing Professional edition provides support for: • High-end databases • Integration with ISAPI and Netscape's NSAPI • Options for third-party... Wizard for stores with multi-level departments • Commerce Server Software Development Kit (SDK) for developing custom-order processing • Order processing pipeline for managing orders according to specified business rules • Microsoft’s Wallet Software Development Kit (SDK) for supporting a variety of digital payment schemes • Promotion and Cross-selling Manager for administering a range of specialized promotions,... Web-based order forms for making secure purchases (either through a SSL or a SET) Database for maintaining product descriptions and pricing, as well as customer orders Integration with third party software for calculating taxes and shipping costs and for handling distribution and 33 fulfillment © Prentice Hall, 2000 Electronic Catalogs and Merchant Servers (cont.) Store HTML Pages Merchant Server Internet... Hall, 2000 30 Selling on the Web (cont.) Electronic storefront must contain: A merchant system or storefront that provides the merchant’s catalog with products, prices and promotions A transaction system for processing orders and payments and other aspects of the transaction A payment gateway that routes payments through existing financial systems primarily for the purpose of credit card authorization... database and other dynamic data enable management and administration of both the server functions and the contents of the Web site log transactions that the user makes Distinguished by : platforms, performance, security, and commerce 16 © Prentice Hall, 2000 Internet Security Cornerstones of Security Authenticity the sender (either client or server) of a message is who he, she or it claims to be Privacy the... process of constructing the ‘new world network’ The University Corporation for Advanced Internet Development (UCAID) www.ucaid.edu Building a leading edge research network called Internet2 Based on a series of interconnected gigapops • interconnected by the National Science Foundation’s very high performance Backbone Network (vBNS) infrastructure Goals of Internet2 • to connect universities so that a 30 . 1 © Prentice Hall, 2000 Chapter 11 Infrastructure for Electronic Commerce 2 © Prentice Hall, 2000 Learning Objectives Describe the protocols. components: Messenger for e-mail reading Composer for authoring HTML Web pages Collabora for news offerings Calendar for personal and group scheduling Netcaster for push delivery of Web. browser along with the following tools: Outlook Express for e-mail reading FrontPage Express for authoring of HTML Web pages Net Meeting for collaboration Netscape Navigator 4.6 suite consists