Transcript Intranets and Extranets

ELC 200
Day 5, 6 (Quiz Day) & 7
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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
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Internet Architecture: Factors in Designing a Network
Factors in Designing a Network
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Location
Capacity
Distance limitations
Cost
Potential growth
Security
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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
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Internet Architecture: Network Management System
Network Management System
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Manager
Managed Nodes
Objects
Management Information Base (MIB)
– http://www.simpleweb.org/ietf/mibs/
• Requests & responses
• http://www.somix.com/
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Network Management Based on
SNMP
Management
Information
Base (MIB)
Network Management
Software (Manager)
Simple Network
Management Protocol (SNMP)
Management
Information
Base (MIB)
Management
Information
Base (MIB)
Command (Get, Set, etc.)
Response
Trap
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RMON Probe
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Large-Scale E-commerce Issues
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Financial exposure
IP exposure
Legal security
Packet sniffing
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Ensuring Corporate and
Information Security
• Firewalls
• IPSec
• Intrusion detection systems
• http://www.schneier.com/
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Management Implications
• High demand for Technical talent
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Project Management
Business Knowledge
Communication Skills
High Salaries
Fastest Growing
• Retaining Talent
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Constructive & Timely Feedback
Recognition & Appreciation
Championing Staff Causes
Support Employee Career goals
Match Industry Standards for Salary
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Chapter 4
Intranets and Extranets
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OBJECTIVES
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Introduction
Technical Infrastructure
Planning an Intranet
E-mail and Intranet
Extranets
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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
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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
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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
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APPLICATIONS
• Human Resources
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Employee handbook
Benefits information
Employee surveys
Internal/external recruiting
Candidate screening
Organizational charts
Newsletters
Company calendars
• Vacation schedules
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APPLICATIONS (Cont’d)
• Sales and Marketing
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Product information
Market research
Prospecting
Managing sales contacts
Sales training
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APPLICATIONS (Cont’d)
• Accounting and Finance
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Financial reports
Expense reports
Accounts receivable/payable processing
Asset management
Policies and procedures
Payroll
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APPLICATIONS (Cont’d)
• Manufacturing and Operations
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Inventory control
Production schedules
Quality assurance
Part order/requisition system
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© 2004 Pearson Prentice Hall
ELC 200
Day 6
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Bribe List
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1947 HD FLH “knucklehead”
2005 Ford Harley-Davidson™ F-350 Super Duty
Audi LeMans (any year)
Redneck Engineering Chopper
– “curves frame”
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Agenda
• Assignment #2 due
• Quiz # 1 Today
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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
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Awad –Electronic Commerce 2/e
© 2004 Pearson Prentice Hall
ELC 200
Day 7
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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
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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
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TECHNICAL INFRASTRUCTURE
• Client/Server Basis
– Client/Server software architecture
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Versatile
Message-based
Modular infrastructure intended to improve usability
Flexibility
Interoperability
Scalability
– Mainframe architecture
• all intelligence is within the central host computer
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TYPES OF CLIENT/SERVER
ARCHITECTURE
• Two-tier architectures
– For an organization with 12-100 users
– Clients -- Servers
• Three-tier architectures
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User system interface
Processing management
Database management
Clients – Processors – Servers
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TWO-TIER ARCHITECTURE
DESIGN
User System Interface
Database Management
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THREE-TIER
ARCHITECTURE DESIGN
User System Interface
Process Management
Database Management
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BASIC INTRANET-ENABLING
TECHNOLOGIES
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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)
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USING FIREWALLS
• Proxy
– “Go-between” agent that acts on behalf of
another
• Packet Filter
– Checks each packet at network level
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Application (Proxy) Firewall
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Inspect
Request
Message
1. HTTP Request
Browser
Webserver
Application
HTTP
Proxy
SMTP
(E-Mail)
Proxy
FTP
Proxy
Client PC
WWW
Webserver
Application Firewall
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Figure 9.7: Application (Proxy)
Firewall
3. Examined
HTTP Request
Browser
Webserver
Application
HTTP
Proxy
SMTP
(E-Mail)
Proxy
FTP
Proxy
Client PC
WWW
Webserver
Application Firewall
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Figure 9.7: Application (Proxy)
Firewall
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Inspect
Response
Message
Browser
4. HTTP
Response
HTTP
Proxy
SMTP
(E-Mail)
Proxy
FTP
Proxy
Client PC
WWW
Webserver
Application
Webserver
Application Firewall
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Figure 9.7: Application (Proxy)
Firewall
Browser
6. Examined
HTTP Response
Webserver
Application
HTTP
Proxy
SMTP
(E-Mail)
Proxy
FTP
Proxy
Client PC
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Webserver
Application Firewall
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Packet Filter Firewall
Corporate Network
The Internet
Permit
Packet
Filter
Firewall
IP-H
TCP-H Application Message
IP-H
UDP-H Application Message
IP-H
ICMP Message
Arriving Packets
Examines Packets in Isolation
Fast but Misses Some Attacks
Deny
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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
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E-MAIL and INTRANET
• Spamming
– Sending unwanted advertisements or literature
through e-mail
• Flaming
– Responding to a message or a call in anger
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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
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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
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KEY CONSIDERATIONS
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Identifying users
Listing technology components
Specifying security requirements
Discussing administration of extranet
Understanding usability of extranet
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OTHER CONSIDERATIONS
• Security
– Type of users
– Sensitivity of information transacted
– Communication lines used
• Manageability / administration
• Usability
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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
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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
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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
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