1. 互联网：
Internet 是一个公共网络，不属于任何人。由于它是一个公共网络，因此任何人都可以在没有有效用户名和密码的情况下访问它。在连接设备数量的情况下，互联网是最大的网络。其中，用户众多，为用户提供了大量的信息。它充当在全世界共享信息的工具。
2. 外网：
Extranet 是一个专用网络，由一个或多个组织拥有。由于它是一个专用网络，因此没有有效的用户名和密码，任何人都无法访问它。它充当内部和外部成员之间共享信息的媒介。它是更安全的网络，由众多组织管理。
让我们看看Internet和Extranet之间的区别：
| S.NO | Internet | Extranet |
|---|---|---|
| 1. | It is used as public network. | Whereas it is used as private network. |
| 2. | An internet is less secure because it has zero security level in the firewall. | While the extranet is more secure than the Internet. |
| 3. | In the case of the Internet, anyone can access it without a valid username and password. | Whereas in the case of extranet, no one can access it without a valid username and password. |
| 4. | A large number of users can access the Internet. | Whereas here, a limited number of users can access the extranet. |
| 5. | An internet acts as a tool for sharing information all over the world. | Whereas it acts as a medium to share the information between the internal and external members. |
| 6. | An internet is not owned by anyone. | Whereas extranet is owned by a single or multiple organization. |
| 7. | An Internet is not managed by either authority. | Unlike the internet, it is managed by numerous organizations. |
| 8. | An internet is the largest network in the case of number of connected devices. | Whereas in the case of extranet, it is small in terms of connected devices as compared to the internet. |
| 9. | An internet is less costly than extranet. | Whereas in the case of extranet, it is more costly. |
| 10. | It’s users are the general public. | It’s users are the employees of the organization which are connected. |
| 11. | It is not owned by anyone. | It is owned by single or multiple organization. |
| 12. | There is no regulating authority for Internet. | It is regulated by multiple organizations. |
| 13. | It is maintained by ISP. | It is maintained by CIO, HR or communication department of an organization. |
| 14. | It is the network of networks. | It is derived from Intranet. |
| 15. | Example: What we are normally using is Internet. | Example: DELL and Intel using network for business related operations. |