Intranet vs. Extranets

Presented by

NISHITH KUMAR SINGH(025)

PARAMJOT SINGH(027)

What are Intranets?What are Intranets?• An intranet is a corporate LAN and/or Wide Area Network (WAN) that is secured behind company’s firewalls and it uses Internet technologies.

• Although intranets are developed using the same TCP/IP protocol as the Internet, they operate as private networks with limited access.

•Only employees who are issued passwords and access codes are able to use them.

•So, intranets are limited to information pertinent to the company and contain exclusive and often proprietary and sensitive information.

• Firewalls protect intranets from unauthorized outside access.

Diagram of Intranet

Technical ComparisonTechnical Comparison

Internet vs Intranet

Packets are public IP protocol suite Cost spread out Problematic mgmt Weak policies No enforcement No controlling org

Packets are private IP protocol suite Enterprise bears

costs Enterprise mgmt Strong policies Central enforcement Enterprise controls

Intranet Uses

• Gives employees access to company documents

• Distributes software• Enables group scheduling• Provides an easy front end to company

databases• Allows individuals and departments to

publish information they need to communicate to the rest of the company

Advantages of Intranets

• Access to information

• Platform independence

• Allowance for multiple data types

• Access to data• Similar interface• Return on

investment

• Increased productivity

• Increased information sharing

• Bottom-up approach• Reducing the

administrative load• Information sharing • Securing sensitive

information

Disadvantages of Intranets• Number of users• Infrastructure• Continuous

growth and change

• Security• Bandwidth

• Scalability• Manageability• Loss of skilled

webmasters and designers

• On-going maintenance

Issues in Designing and Implementing an Internet• Intended

business objectives

• Design around business goals

• Hardware and software costs

• Support costs

• Manageability• Training• Outsourcing• Productivity • Security• Compatibility

Intranet Applications

• Discussion forums

• On-line polls

• Organizational directories

• Company policies and procedures

• Company forms

Guidelines for Intranet Design

• Group together all the tasks that make up a business process

• Map out the key business processes of the company

• Provide employees with access to the information and people necessary to carry out those processes

Evolution of the Intranet:Present-Day Intranets• Knowledge management• Simple-to-navigate interfaces• Becoming advanced virtual work

environments – advanced intranets can include:– Web-based calendars– Customer Relationship Management Systems– Instant Messaging– Discussions– Interaction with a company’s web site– wireless

What is an Extranet ?

• An extranet implies an “extended intranet”, which uses TCP/IP protocol networks (like the Internet) to link intranets in different locations. Extranet transmissions are conducted over the Internet to save money. But it offers no privacy or transmission security. By creating tunnels of secure data flows using cryptography and authorization algorithms, called VPNs, the security can be improved.

• Extranets provide secure connectivity between a corporation’s intranets and intranets of its business partners, material suppliers, financial services, and customers

Extranet Diagram

Uses of an Extranet

• Manufacturing companies – coordinate design manufacturing, scheduling and delivery across supply chain

• Technology firms – support for customers and partners, and remote access for workers

• Financial services – can reduce costs of proprietary networks

• Publishing companies – increase speed of design and production cycles

Advantages of Extranets

• Streamlined business processes

• Flexibility and Scalability

• Reduced Transitional Barriers

• Decreased Costs

• Ease of use and maintenance

• Versatility• Cost and Return

on Investment

Disadvantages of Extranets• No support from

top management

• Maintenance of Information

• Lack of Training

• Information Overload

• Waste of Productivity

• Security

Designing & Implementing • Issues that should be addressed:

- Security

- Compatibility

- Flexibility and Adaptability

- Scalability

Extranet Applications

• Private News Groups

• Common Business Materials

• Electronic Commerce

• Improved Customer Service and Sales

Barriers to Extranet Adoption• Security

• Privacy

• Legitimacy

• Elimination of Distribution and Middlemen

• Complexity

Conclusion

Can both be beneficial to the way that business is done

Create value to an organization

Improve operations within the organization

Make life easier

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