ELC 200 Day 5, 6 (Quiz Day) & 7. Awad –Electronic Commerce 2/e © 2004 Pearson Prentice Hall 2 Agenda Assignment #2 due next class Quiz # 1 on Jan 28 –Chap

WWWWWW

ELC 200

Day 5, 6 (Quiz Day) & 7

2WWWWWW Awad –Electronic Commerce 2/e© 2004 Pearson Prentice Hall

Agenda

• Assignment #2 due next class• Quiz # 1 on Jan 28

– Chap 1-3 of text– 15 M/C (60 Points), 4 Short Essay (40 Points)– Open book, open notes

• Today we will finish discussion on Designing Networks and begin a discussion on Intranets and Extranet


Factors in Designing a Network

• Location

• Capacity

• Distance limitations

• Cost

• Potential growth

• Security

Internet Architecture: Factors in Designing a Network


Factors in Selecting Network Architecture

• Hardware requirements

• Software requirements

• Disaster recovery & fault-tolerance requirements

• Corporate culture and organizational factors

Internet Architecture: Factors in Designing a Network


Network Management System

• Manager

• Managed Nodes

• Objects

• Management Information Base (MIB)– http://www.simpleweb.org/ietf/mibs/

• Requests & responses

• http://www.somix.com/

Internet Architecture: Network Management System


Network Management Based on SNMP

ManagementInformationBase (MIB)



Network ManagementSoftware (Manager)

Simple NetworkManagement Protocol (SNMP)

RMON Probe

Command (Get, Set, etc.)

Response

Trap


Large-Scale E-commerce Issues

• Financial exposure

• IP exposure

• Legal security

• Packet sniffing


Ensuring Corporate and Information Security

• Firewalls

• IPSec

• Intrusion detection systems• http://www.schneier.com/


Management Implications

• High demand for Technical talent– Project Management – Business Knowledge – Communication Skills– High Salaries – Fastest Growing

• Retaining Talent– Constructive & Timely Feedback– Recognition & Appreciation– Championing Staff Causes– Support Employee Career goals– Match Industry Standards for Salary

WWWWWW

Chapter 4

Intranets and Extranets


OBJECTIVES

• Introduction

• Technical Infrastructure

• Planning an Intranet

• E-mail and Intranet

• Extranets


WHAT IS AN INTRANET?

• An organization-wide software and information distribution system applying Internet technology to a closed network

• Intranet operation is a communication project designed by technical staff

• A network of people, not wired machines• Usually runs in a client/server environment

and a local area network configuration


BENEFITS• 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


APPLICATIONS

• Human Resources– Employee handbook

– Benefits information

– Employee surveys

– Internal/external recruiting

– Candidate screening

– Organizational charts

– Newsletters

– Company calendars • Vacation schedules


APPLICATIONS (Cont’d)

• Sales and Marketing– Product information– Market research– Prospecting– Managing sales contacts– Sales training



• Accounting and Finance– Financial reports– Expense reports– Accounts receivable/payable processing– Asset management– Policies and procedures– Payroll



• Manufacturing and Operations– Inventory control– Production schedules– Quality assurance– Part order/requisition system

WWWWWW

ELC 200

Day 6


Bribe List

• 1947 HD FLH “knucklehead”• 2005 Ford Harley-Davidson™ F-350 Super Duty • Audi LeMans (any year)• Redneck Engineering Chopper

– “curves frame”


Agenda

• Assignment #2 due• Quiz # 1 Today

– Chap 1-3 of text– 15 M/C (60 Points), 4 Short Essay (40 Points)– Open book 60 min– You can leave when have completed the quiz– Good luck

WWWWWW

ELC 200

Day 7


Agenda

• Quiz #1 Graded– 7 A’s, 9 B’s, 2 C’s and 1 D– Answers were all straight out of the book

• Assignment #2 Graded– 9 A’s, 1 B, 2 C’s, 1 D, 2 F’s and 4 non-submits– Those Zeros for not turning assignments will really

screw up your average

• Assignment #3 assigned today• Today finish up on Intranets and Extranets


WHY DOES A COMPANY NEED AN INTRANET?

• A company has a large pool of information to share among hundreds of its employees– Break point is ~ 100

• Intranets are cheap (relatively), robust and fast• Intranets operate across platforms

– UNIX, Windows, Mac

• 24/7 to employees• Information in intranet can be updated quickly and

uniformly


TECHNICAL INFRASTRUCTURE

• Client/Server Basis– Client/Server software architecture

• Versatile

• Message-based

• Modular infrastructure intended to improve usability

• Flexibility

• Interoperability

• Scalability

– Mainframe architecture • all intelligence is within the central host computer


TYPES OF CLIENT/SERVER ARCHITECTURE

• Two-tier architectures– For an organization with 12-100 users– Clients -- Servers

• Three-tier architectures– User system interface– Processing management– Database management– Clients – Processors – Servers


TWO-TIER ARCHITECTURE DESIGN

User System Interface

Database Management


THREE-TIER ARCHITECTURE DESIGN

User System Interface

Database Management

Process Management


BASIC INTRANET-ENABLING TECHNOLOGIES

• Server and Client PCs

• Web Server

• Browsers

• TCP/IP based Electronic Mail

• Graphic and Multimedia Files

• Network File System (NFS)

• Internet Relay Chat (IRC)

• HTML Authoring Tools

• HTML

• Portable Electronic Document (PDF)


USING FIREWALLS

• Proxy– “Go-between” agent that acts on behalf of

another

• Packet Filter– Checks each packet at network level


Application (Proxy) Firewall

SMTP(E-Mail)Proxy

FTPProxy

Application Firewall

HTTPProxy

Browser WebserverApplication

1. HTTP Request

Client PC Webserver

2.InspectRequestMessage


Figure 9.7: Application (Proxy) Firewall

SMTP(E-Mail)Proxy

FTPProxy


3. ExaminedHTTP Request

HTTPProxy


Client PC Webserver



SMTP(E-Mail)Proxy

FTPProxy


HTTPProxy


4. HTTPResponse

Client PC Webserver

5.Inspect

ResponseMessage



SMTP(E-Mail)Proxy

FTPProxy


HTTPProxy


6. ExaminedHTTP Response

Client PC Webserver


Packet Filter Firewall

PacketFilter

Firewall

IP-H

IP-H

TCP-H

UDP-H Application Message

Application Message

IP-H ICMP Message

Arriving Packets

Permit

Deny

Corporate Network The Internet

Examines Packets in IsolationFast but Misses Some Attacks


PLANNING AN INTRANET

• Plan ahead• Provide justification with management support

– Without management support you have little to no chance of success

• Build an intranet in-house or outsource it• Form an Intranet team

– Advisory and Oversight (CYA)

• Build and test a prototype• Ensure effective maintenance


E-MAIL and INTRANET

• Spamming– Sending unwanted advertisements or literature

through e-mail

• Flaming– Responding to a message or a call in anger


E-MAIL ETIQUETTE

• Write in different color to express attitude or mood

• Keep sentences short• Be aware of your office and organization culture• Avoid FLAMING• Don’t use e-mail to send bad news• Don’t type in capital letters


EXTRANETS

• 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


KEY CONSIDERATIONS

• Identifying users

• Listing technology components

• Specifying security requirements

• Discussing administration of extranet

• Understanding usability of extranet


OTHER CONSIDERATIONS

• Security– Type of users– Sensitivity of information transacted– Communication lines used

• Manageability / administration

• Usability


ROLE OF CHAMPION

• Ensures accountability for the organization

• Promotes more effective collaboration with business partners which improves potential for increased revenue

• Provides a long-term investment in competitive advantage


eCommerce Framework

• Instead of a Final Exam ELC 200 has a capstone experience project– 18% of your final grade

• Ties in everything you learned in the course from a applied perspective.

• The final project is an E-Commerce Initiative framework – mini-business plan– Mostly its a proof of concepts– Used in business to develop funding opportunities

• Parts– Paper – due last week of class– Presentation – due last week of class

• Guidelines posted in WebCT and handed out in class


Assignment # 3

• On page 129 and 130 – Do the following questions from the Discussion

Questions Section– 1, 2, 3 & 7

• On Page 157 – Do the following questions from the Discussion

Questions Section– 1, 2, 4, & 6

• Turn in a well formatted Word Document• Due Feb 8 at the beginning of class

Documents

ELC 200 Day 5, 6 (Quiz Day) & 7. Awad –Electronic Commerce 2/e © 2004 Pearson Prentice Hall 2 Agenda Assignment #2 due next class Quiz # 1 on Jan 28 –Chap