1. An intranet is a private internal network that uses internet technologies like HTML and TCP/IP and is only accessible to authorized members of an organization. It provides collaboration and communication tools. 2. An extranet extends an organization's intranet to external partners, suppliers, and customers. It uses the same internet technologies and security measures as an intranet. 3. Both intranets and extranets provide advantages like low costs, easy access to information, and improved communication and collaboration. However, they also pose security and information overload risks that must be managed.

1. Intranet and Extr anets
Presentation by :-
MD NURUDDIN
KAMAL JAIN
B.Tech(BIOTECH)
1st YEAR
SHARDA
UNIVERSITY

2. Intranet

3. 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
© 2007 Prentice-Hall, Inc 4-3

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. 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
© 2007 Prentice-Hall, Inc 4-7

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

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  Unauthorized access
problem  Abuse of access
 Denial of service
Productivity  Information overload lowers productivity
problem  Hidden or unknown complexity and costs

12. Extrane
t

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..
 Dealers/distributors have access to
product files such as :-
1. product specification,
2. pictures,
3. 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. Enterprise Collaboration Tools
Enterprise Collaboration Tools
Data Discussion
Conferencing Forums
Groupware
Voice Enterprise
Chat Systems
Conferencing Collaboration
Tools
Electronic Meeting
Videoconferencing
Systems
pg. 16

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. Layered System View
Intrane Corporate members
t
Extranet Clients, partners, customers
Interne Global society: competitors
t

20. Questions

21. Y ou
a nk
Th