Internet、Intranet 和 Extranet 之间的区别

1. 互联网：
由数以百万计的计算机相互协作互连并连接在一起而形成的网络称为互联网。互联网包括：

• 人们：人们使用和开发网络。
• 资源：可以从这些网络访问的资源集合。
• 一种合作设置：它包括研究和全球教育委员会的成员。

2. 内联网：
它是使用 Internet 和万维网标准和产品在组织内部构建的内部专用网络，允许组织的员工访问公司信息。

3. 外网：
它是一种允许外部用户访问组织内联网的网络类型。

互联网、内联网和外联网的区别：

Point of difference	Internet	Intranet	Extranet
Accessibility of network	Public	Private	Private
Availability	Global system.	Specific to an organization.	To share information with suppliers and vendors it male the use of public network.
Coverage	All over the world.	Restricted area upto an organization.	Restricted area upto an organization and some of its stakeholders or so.
Accessibility of content	It is accessible to everyone connected.	It is accessible only to the members of organization.	Accessible only to the members of organization and external members with logins.
No. of computers connected	It is largest in number of connected devices.	The minimal number of devices are connected.	The connected devices are comparable with Intranet.
Owner	No one.	Single organization.	Single/ Multiple organization.
Purpose of the network	It’s purpose is to share information throughout the world.	It’s purpose is to share information throughout the organization.	It’s purpose is to share information between members and external, members.
Security	It is dependent on the user of the device connected to network.	It is enforced via firewall.	It is enforced via firewall that separates internet and extranet.
Users	General public.	Employees of the organization.	Employees of the organization which are connected.
Policies behind setup	There is no hard and fast rule for policies.	Policies of the organization are imposed.	Policies of the organization are imposed.
Maintenance	It is maintained by ISP.	It is maintained by CIO. HR or communication department of an organization.	It is maintained by CIO. HR or communication department of an organization.
Economical	It is more economical to use.	It is less economical.	It is also less economical.
Relation	It is the network of networks.	It is derived from Internet.	It is derived from Intranet.
Example	What we are normally using is internet.	WIPRO using internal network for its business operations.	DELL and Intel using network for its business operations.