Title: What Is a Public Network, Private Network, Intranet, and Extranet? [Print this page] Author: GTAC-Sophia Time: 2023-5-29 16:50 Title: What Is a Public Network, Private Network, Intranet, and Extranet?
(1) Public network
The public network can be simply regarded as the Internet where the publicly accessible servers such as Google and TikTok are located. All the IP addresses on the public network are public network IP addresses. (2) Private network
Private networks include enterprise, home, andhospital networks. IP addresses on a private network cannot access the publicnetwork. (3) Intranet and extranet
Intranet and extranet are comparative.
As shown in the figure above, enterprise 1 has one department (yellow part) where router D is deployed. Router D connects to the enterprise network (red part). In this case, the department connects to the router D network. For router D, the yellow part is the intranet and the red part is the extranet. Similarly, for router B, the enterprise network is the intranet and the network outside the enterprise is the extranet.
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