Outline Introduction to Internet, Intranet and Extranet. What is an Intranet? by Awad. Basic Intranet-enabling Technology [Awad, chapter 4]

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1 Outline Introduction to Internet, and Yan Wang E6A 339 Internet Ultranet" 1 2 What is an? by Awad Basic -enabling Technology [Awad, chapter 4] A cluster of networked computers within a department, a company, or an office [Awad, p69] An organization-wide software and information distribution system applying Internet technology to a closed network operation is a communication project designed by technical staff A network of people, not just wired machines Usually runs in a client/server environment and a local area network configuration Server and Client PCs Web Server Browsers TCP/IP Electronic Mail Graphic and Multimedia Files Network File System (NFS) Internet Relay Chat (IRC), Unix utility HTML Authoring Tools HTML documents Portable Electronic Documents 3 4 1

2 Benefits [Awad, chapter 4] Links employees and managers together Automates a lot of intra-organizational traffic Enables a company to gain better access to its primary resources knowledge and experience Serves as a creative and empowering tool Establishes the foundation for developing enterprise-wide information systems Benefits (Cont d) Provides a model for new internal information management collaborative computing Prepares a wealth of Internet knowledge to employees Eases process integration Allows company to expand the system 5 6 Firewalls Firewalls protect intranets from unauthorized outside access. Definition of Firewall Software and hardware that allow only those external users with specific characteristics to access a protected network Usually located at a gateway point and controls traffic between internal and external networks Using Firewalls Proxy Go-between agent that acts on behalf of another Packet Filter Checks each packet at network level 7 8 2

3 The Public/External Internet Users Firewalls Clients Servers ERP Legacy systems servers Web servers E-Business Systems: s Databases From Turban, et al., 2000, Prentice Hall, E-Procurement 10 Some generic functions of an Corporate/department/individual Web-pages Database access: Web-based databases Search engines and directory: Assist key word-based search (great for customer support and sales folks looking for existing solutions) Interactive communication: Chatting, audio and videoconferencing Document distribution and workflow: Web-based download and routing of documents Groupware: better communication and groupwork Telephony: teleconferencing, etc. Benefits of for e-business Low Development and Maintenance Costs Friendly Environment High Information Availability and Shareability Timely Information Easy Dissemination of Information E-Business Systems: " External but private (s) An extranet implies an extended intranet s provide secure connectivity between a corporation s intranets and BUSINESS partners Ex' tra net - "a business-to-business intranet that allows limited, controlled, secure access between a company's intranet and designated, authenticated users from remote locations"

4 E-Business Systems: " External but private (s) uses TCP/IP protocol networks (like the Internet) to link intranets in different locations. or use specific protocols transmissions conducted over Internet to save money. Internet offers no inherent privacy or transmission security. Need s 13 E-Business Systems: " (by Lawrence, pp. 17) An extranet is a collaborative network that uses Internet technology to link businesses with their suppliers, customers or other business that share common goals. s are usually linked to business intranets where information is either accessible through a password system or through links that are established collaboratively. 14 E-Business Systems: " (by Lawrence, pp. 17) They can be also private worldwide networks that operate on protocols that are either the same as Internet or specifically developed for those networks. Unlike the Internet, these networks are not always in the public domain. 15 Virtually Private Network () is a secure network on the Internet using the tunneling schemes tunnels are secure data flows w/ cryptography and authorization algorithms The major objective of a is to use the Internet as an inexpensive WAN backbone When two sites are connected across a, each must have a -capable router, firewall, or access device installed When is used to link mobile clients with Internet dialup connections, the laptops must be equipped with client software equipped with the addresses and associated encryption keys for corporate host sites 16 4

5 If a company Web site links two or more trading partners, it is referred to as an. Suppliers Distributors Customers Tunneling Internet Firewall Firewall From Turban, et al., 2000, Prentice Hall, [Awad] Features: Lets limited, controlled business partners interact with the firm for all kinds of exchanges System designers must collaborate to make sure there is a common interface with the company they are dealing with Benefits: faster time-to-market, customer loyalty, increased partner interaction, and improved processes 18 Key Considerations [Awad] Identifying users Listing technology components Specifying security requirements Type of users Sensitivity of information transacted Communication lines used Discussing administration of extranet Understanding usability of extranet 19 Quick Overview: Internet,, and Network Typical Type of Type Users Access Information Internet Any individual with dial-up access or LAN Unlimited, public; no restrictions General, public and advertisement Authorized employees ONLY Authorized groups from collaborating companies Private and restricted Private and outside authorized partners From Turban, et al., 2000, Prentice Hall, 2000 Specific, corporate and proprietary Shared in authorized collaborating groups 20 5

6 Summary: s, s, Internet Suppliers Clients Enterprise Internet Part of Enterprise Consumers Remote Employees Ultranet" Mako Katsumura described what will be the ultimate world-wide network, informally known as the Ultranet. It will exist once all of the relatively new Internet tools and methodologies mature into their next phase. Prentice Hall, 2000 Distributors 21 Business Partners 22 Ultranet" The building blocks that will combine to form the Ultranet are: Java, platform-independent Internet Protocol version 6 (IPv6), more addressing space (Increase from 32-bit to 128-bit address space) Secure electronic transactions (SET) Object-oriented database management systems (OODBMS) Extensible Markup Language (XML), an universal data representing language Ultra = going beyond what is usual or ordinary 23 6

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