1

Submitted To:-

Ms. Amandeep Kaur

Submitted By:-

Nitika Singla

Shivani Singla

INTRANET &

DNS

2

What is intranet?Why we use it?Technology behind it….AdvantagesDisadvantagesIntranet Vs InternetIntranet Vs Extranet

Table of contents:-

3

What is DNS?Services provide by DNSElements AdvantagesVideo

Cont……

Private and secure internal information system which uses Internet technology to collect and disseminate information of interest to all staff

What is an Intranet?

Company network Internet

Firewall

Web browser Web

browser

Why Intranets?Improved internal communicationImproved access to informationImproved productivity Promote user participationImproved management

One or more inter-connected TCP/IP networks

Internet connectivity with firewall protectionServers: Web, E-Mail, Proxy, DNSBrowsers, plug-ins, authoring toolsDatabases, search enginesWebsite administration tools

Technology behind Intranets

Example…

Servers

Shared Data

Firewall Internet

Intranet

Integration

PCs

Advantages

Platform IndependentEase of publishingEasier to setupEase of useMaintenance is very easyCost effectiveInformation retrieval is timely

manner.

Disadvantages

Security ConcernsIntranet may cause information

overload

Intranet VS Internet

InternetExternal websitesE-Commerce

InsecureTCP/IPLimited

management

IntranetInternal websitesCommutation &

Information accessSecureTCP/IPManaged

11

INTRANET

Internet,Intranet & Extranet

The relationship between access to intranets, extranets and the Internet

13

 DNS is a distributed hierarchical naming system for computers, services, or any resource connected to the Internet or a private network.

The entry in database file is DNS resourse record.

What is DNS?

14

Mapping from names to addresses(server to client)

Mechanism to store and retrieve information in a global data store.

DNS Provides:

15

DNS ElementsResolver:-

The client-side of the DNS is called a DNS resolver

Server:-Where sender send the request for

query.

16

DNS Operations

17

It's More Reliable.It's Faster.It's SmarterIt's Safer.

Advantages

Conclusion

THANKU…..

20

Any Questions?

…….