What is public IP

Public IP refers to a non-reserved address connected to the Internet using the public network, and can be freely accessed by other computers on the Internet. Each computer on the Internet has an independent IP address. This IP address uniquely identifies a computer on the Internet. This IP address refers to the public IP address.

The operating environment of this tutorial: Windows 10 system, Dell G3 computer.

What is a public IP address?

Public IP refers to a non-reserved address connected to the Internet using the public network, and can be freely accessed by other computers on the Internet. The commonly referred to as IP address actually refers to the public IP. Every computer on the Internet has an independent IP address, which uniquely identifies a computer on the Internet. The IP address here refers to the public IP address.

Public network and intranet are two ways to access the Internet. Public network access method: The IP address obtained by the computer on the Internet is a non-reserved address on the Internet. Computers on the public network and other computers on the Internet can access each other at will.

The role of public IP:

1. The user needs to set up a website. If the domain name resolution does not take effect, he can directly enter the public IP to access his website.

2. Users need to connect remotely and directly use the public IP for remote desktop, then they can connect to the corresponding host for management.

3. Communication between networks is identified by public IP address, so Wangwang IP address must be used for networking.

Extended information

The difference between public IP and intranet IP:

1. The meaning is different

The public address (Public address) is responsible for the Inter NIC (Internet Network Information Center).

These IP addresses are assigned to organizations that register and apply to Inter NIC. Direct access to the Internet through it. Private address is an unregistered address and is exclusively for internal use of the organization.

2. Different uniqueness

The external IP address is the only IP address in the world and is only assigned to one network device. The intranet IP is an IP address assigned by the router to each unit for internal use. The IPs of different intranets can be the same.

3. Different access rights

Accessing the Internet requires public IP as an identity identifier, while private IP is used for local area networks. Private IP addresses cannot be used to implement the Internet on the public network. accessed.

4. How many are different?

The external network IP is limited and cannot be allocated to everyone. It is first come, first served. In theory, the internal network IP can be unlimited.

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