Understanding Intranet

There is internet, there are intranets and extranets. What is intranet and extranet? Intranet is also a computer network. The difference is, when the Internet is a global computer network, the intranet is a computer network with a limited coverage area. According to the website Wikipedia (en.wikipedia.org), an intranet is a computer network within a limited range (private), which uses internet protocols (TCP / IP) to share information with the internal organization of a system to its members. In short, using the means of communication and intranet applications such as the Internet, but in a limited scope.
Understanding Intranet
Intranet is often applied in offices, companies, and institutions. With intranets, companies can share information to employees without worrying information was leaked. This information can not be accessed by Internet users because no available means of access to the corporate intranet.
What if the company wants employees who are abroad, including sales, distributors, and agents can continue to follow the development of corporate information? Sometimes intranet network connected to the Internet with the intent to provide company information to specific users that are outside the area of ​​the intranet. These networks are called extranets. Extranet equipped with a strict protection so that only certain users have the right to access information in it. Thus, although there is a physical connection between the Internet and extranet network, Internet users can not access the information in the extranet. Conversely, employees who are overseas can still access the company's internal information through extranets.
Intranets and extranets using the means of communication, applications, tools, and standards are the same as the internet. Therefore, further discussion of this book will focus on the internet.