Report Intranet and Extranet

8/13/2019 Report Intranet and Extranet

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Intranet and ExtranetGroup 6LEGASPI, OBRA, TAN


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Intranet Overview An Intranet is a privately maintained, sec

computer network based on the comm

standards of the Internet.

It is a smaller version of the Internet that ointernal members of an organization can

At the same time it is available remotelyInternet allowing access from any physiclocation.

Intranet is an IP-based system, which mewhole set of higher-level protocols abovcould be applied in Intranet without mo

EXAMPLES


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What does Intranet do?

Information publishing: using the Intranetto deliver news and other information inthe form of directories and webdocuments.

Email: implementing an email system thatintegrates seamlessly with the Intranet,allowing information to be both pushed

and pulled. Document management: using the

Intranet to allow users to view, print, andwork collaboratively on office documents(word-processed documents,spreadsheets, presentations, etc.).

Training: using the Intranet totraining at the desktop.

Workflow: using the Intranet administrative processes.

Databases and other bespok

using the Intranet as a front-organization-specific systemcorporate databases.

Discussion: using the Intranefor users to discuss and deba


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How do Intranetsdo it?

Intranets use HTML to create doand TCP/IP to transmit informati

the network.Information is stored on one or mcompany servers and accesseda web browser, such as NavigaInternet Explorer.

This self-contained, miniature Inthave all the same featuresind

home pages, newsgroups, emaaccess is restricted to companyemployees and contractors.


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Extranet Overview

An Extranet is a private network that uses Internetprotocols and the public telecommunicationsystem to securely share part of a businesssinformation or operations with suppliers, vendors,partners, customers, or other businesses.

Extranet brings benonly a single organalso to its partners, suppliers. It allows torganization to impcommunication chup-to-date busineswith partners, clien

suppliers, and integbusiness processes


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Configuration of Extranet

Whereas an Intranet resides behind a firewall and is accessible only to people who are members of theor organization, an Extranet provides various levels of accessibility to outsiders. You can access an Extrahave a valid username and password, and your identity determines which parts of the Extranet you ca


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Intranet Technology

Web Server

HTML Developer

Browser

Security

VPN

Content Management System


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Web Server

The major appearance of anIntranet is the web-baseplatform that connectsemployees and businesspartners.

The web server is obviously thefundamental technology to runthe Intranet.


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HTML Development

WYSIWYG (What You See Is What You Get)

These tools allow the nontechnical user tocreate sites without the knowledge ofHTML code (for example, Microsoft FrontPage).

HTML Editors

For the more advanced userHTML and wants to have mothe page structure.

The company may decide to purchase licensing for both types of tools anout according to skill level. It should be noted that these types of tools are slowinto one.


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Browser

If the organization wants toopen its Intranet to thepartners and vendors(Extranet), support for both

browsers is required, becausethe administrator has nocontrol over the partnersnetwork.


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Security

Snooping and Eavesdropping

The risk of having someoneoverhear data being sentover the Intranet.

User Impersonation The risk of having users gain

access by pretending to besomeone else.

Unauthoriz The risk of ha

obtain acceconfidential

Common Threats

Techniques

User Authentication

An LDAP or ODBC compliant centraldatabase could be used to store theuse authentication information.Passwords must be maintained andupdated periodically. Digital signatureis another choice for both

authentication and data encryption.

User Impersonation

The permission to access allthe resources on the Intranetmust be carefully planned.Once logged in, usersactivities must be trackedthroughout the session.

User Impe

Using SSL anservices mayreal-time intcommunica


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VPN Virtual Private Network

Uses public Internet as the transfer infrastructure.

Tunnels are created in the Internet between Intranet sites such that the Intranencapsulated inside the regular IP packets.

The source and destination of encapsulating traffic are the gateways that sit point of Intranet sites.

Many techniques provide the tunneling function, such as PPTP, L2TP, L2F, andmode. To protect the private information transmitted in the tunnel, security mmust be used.

A good combination of both tunneling and security is L2TP/IPSec.


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Content Management System

Document check-in/check-out

Versioning

Content approval workflow

Open-standards database and templatecreation

Database management and file systemmanagement

Dynamic page generation

Link management

Document conversion

User-friendly content authoring

Personalization

Access control or built-in securit

Usage analysis


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PowerLaw Rule for Intranets and Ext

The relationship between the degrees of the nodes and the ranks of the nodarranged by degrees.

It means that there exists a relationship between the degree dnof a node n ior the Extranet and the rank of a nodern. R is the power of the node rankrn.

A power law appears between the degree of a node and the number of nothe degree, frequency. That means that there exits a relationship between tha node, d, and the frequency f d such as:

0


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PowerLaw Rule for Intranets and Ext

The relationship between a calculated eigen value , by the connectivity anare arranged in ascending order by the eigen value using a close matrix, thaare connected, it is represented by 1, and if not connected, is expressed bknown also as a power-law. The eigen value, , and rank, i, have the relation

Example: Determine the degree of node 5 in the intranet if the rank of the no

the power is 3. (Ans. 64)


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Topology Models

Tiers Model

TransitStub Model

BarabasiAlbert Model

Waxman Model


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Tiers Model

In this model, the three levels of WAN,MAN, and LAN are treated as a basicpolicy. It has a hierarchicalcharacteristic. At the MAN and LANlevels, all edges are connectedthrough minimum spanning treecalculation. In the case of the WANlevel, the network is made randomly.


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Transit Stub Model

Through a random method, each Intranet/Extranet makes whole tran

In the graph, each node is substituanother connected random graphfor a backbone topology in a tran

In the transit area, each node mak

random graphs that stand for the aarea.

In the pair of nodes, edges are adtwo kinds of graph involved here. Ographs is connected between transtub area. The second graph is cobetween one stub area and anoth


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Barabasi Albert Mode

An algorithm for generatingrandom scale-free networks usinga preferential attachment mechanism.Scale-free networks are widely observedin natural and human-made systems,

including the Internet, the world wideweb, citation networks, and some socialnetworks.


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Waxman Model

Used to add the links in a network considering that the distance between thearranged in random positions on a 2D grid.

If we consider the two nodes u and v, the rates of the existing edge betweennodes are different depending on the distance of the node from the other no


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Intranet/Extranet Applications

Human Resource Intranet Employee handbook

Telephone/email directory

Interactive benefits information

401K tracking

Employee surveys

Recruiting/job listings

Candidate screening applications

Organizational charts

Newsletters

New employee training

Employee personalized home pages

InformatioIntra

Software and appdevelopment an

User documentat

Technical suppor

Network manage

Information and k

repositories

Internet resources

Resource schedu

Technical/securitprocedures

Multimedia-based

Intranet FAQs, pu

Web paging or c

systems

Sales and MarketingIntranet/Extranet

Product demos and scripts

Pricing charts

Sales forecasts and reports

Sales contact management

Sales lead management

Market research/search engines

Sales feedback

Prospecting

Press releases

Sales team collaboration

Calendars

Sales multimedia training

Competitor research


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Intranet and Extranet Design Issues

Intranet and Extranet Design Process

You have to design appropriate retrievalaids for your materials.

Efforts must be made to analyzeinformation and user needs.

Information must be re-engineered foreffective use online.

Intranet and Extranet Desig What are your goals why you

create the Intranet and /or Ex

Is it possible for this Intranet/Exmake the jobs in your organizaeasier?

What kind of problems are yo

experiencing in their jobs? Do the users in your organizati

current documentation in the

Does the information help usetrue goals?


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Intranet and Extranet Design Issues

Design Standards

Templates should be created for use in cases where there may be similar informat

The company should get together as one and then create a set of design standa

An editor whose job should be only to edit and to create should be involved in than early stage.

A document process and monitoring system should be established. In addition, it

that the company understands the document purpose and team and individual

Once the collaborative assignment is completed, the project should be evaluatelessons learned list should be developed for future applications.

The entire team should be allowed to get involved in the design process so that eunderstands why certain decisions have been made.


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Resources

Akujuobi, Cajetan, and Matthew"Intranet and Extranet." IntroducBroadband Communication SysRaton: SciTech Publishing, 2008.

"BarabsiAlbert Model." Wikipe

Wikimedia Foundation, 23 July 208 Sept. 2013.

"Lightweight Directory AccessProtocol." Wikipedia. WikimediaFoundation, 09 July 2013. Web. 2013.

"ODBC." Wikipedia. Wikimedia

Foundation, 28 Aug. 2013. Web2013.

"Secure Socket Layer." WikipediWikimedia Foundation, 09 July 208 Sept. 2013.

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Report Intranet and Extranet