Intranet and Extranet

1. Intranet and Extranets

2. Intranet

3. 4-3
© 2007 Prentice-Hall, Inc
What Is an Intranet?
• An intranet delivers collaboration and coordination
to employees around the clock
– Communication system designed by technical staff
– Focus is the message, not the media
• Normally runs in a client/server environment and a
local area network configuration
• Separated from other networks by firewalls , a
means of preventing unauthorized access to the
company’s internal data or leaks of sensitive
company information

4. What is Intranet ?
Internal company network that uses Internet
standards (HTML, HTTP & TCP/IP protocols) &
software.
Accessed only by authorized persons, especially
members or employees of the organization
Intranet = Network + Information Resource +
Information Services

5. Intranet Security
Two levels of Security required:
Internal
It can be imposed by Public Key Security &
Encryption Key.
External
Through Firewall.

6. What is Firewall ?
Security device located between firm’s internal
network (intranet) & external network (internet).
Regulates access into & out of a company’s network
based on a set of rules.
Note : needs to be upgraded from time to time to check latest
potential security problems.

7. 4-7
© 2007 Prentice-Hall, Inc
Strategic Significance
•
•
•
• A cost-effective way of distributing information
throughout an organization
Links employees and managers around the clock
and automates a lot of intraorganizational traffic
Makes it possible for a company to gain better
access to its primary resource - the knowledge
and experience of decision makers
Enables easier integration of processes

8. Fundamentals of Information
Systems, Second Edition
8
Virtual Private Network

9. Applications of Intranet
Sharing of company policies/rules &
regulations
Sharing of information of common interest
Access product & customer data
Launching of personal/departmental home
pages
Submission of reports
Corporate telephone directories

10. Advantages of intranet
Fast, easy, low-cost to implement
Based on open standards
Connectivity with other systems
Easy to learn and use
Hypertext links
Access to internal and external information
Improves communication

11. Disadvantages
Management
problem
Fear of sharing information and the loss of control
Limited bandwidth for the business
Security
problem
Unauthorized access
Abuse of access
Denial of service
Productivity
problem
Information overload lowers productivity
Hidden or unknown complexity and costs

12. Extranet

13. What is Extranet ?
Extranet is an Intranet for outside authorized users
using same internet technology.
Inter-organizational information system.
enable outsiders to work together with company’s
employees.
open to selected suppliers, customers & other business
partners

14. Examples..
1.
2.
3.
Dealers/distributors have access to
product files such as :-
product specification,
pictures,
images, etc.
to answer the queries of the customer.

15. Components of
extranets ..
Some basic infrastructure components such
as the internet Including :-
TCP/IP protocols,
E-mail,
Web-browsers,
External business partners &
Tele-commuting employees place order,
check status & send E-mail.

16. pg. 16
Enterprise Collaboration Tools
Data
Conferencing
Videoconferencing
Discussion
Forums
Electronic Meeting
Systems
Voice
Conferencing
Chat Systems
Groupware
Enterprise
Collaboration
Tools

17. Benefits of Extranet
Improved quality.
lower travel costs.
lower administrative & other overhead costs.
reduction in paperwork.
delivery of accurate information on time.
improved customer service.
better communication.
overall improvement in business
effectiveness.

18. Disadvantages
The suppliers & customer who don’t
have technical knowledge feel problem.
Faceless contact.
Information can be misused by other competitors.
Fraud may be possible.
Technical Employees are required.

19. Clients, partners,
customers
Layered System View
Intranet
Extranet
Internet
Corporate members
Global society: competitors