What do external IP and internal IP mean in Alibaba Cloud?

External IP is a public IP, which can be accessed through the Internet, and internal IP is a local area network IP, which can only be accessed within the local area network.

The IP of the intranet is invisible to other users of the Internet, so it is necessary to map the IP of the computer you want to visit to the IP of the external network.

Computers in the public network and other computers on the Internet can access each other at will.

Extended data

NAT realizes the mutual conversion between IP addresses of internal network and public network, and converts a large number of internal network IP addresses into one or a small number of public network IP addresses, thus reducing the occupation of public network IP addresses.

In a local area network, only one computer needs to connect to the Internet, so you can use NAT to share the Internet connection, so other computers in the local area network can also access the Internet. Using NAT protocol, computers in the local area network can access computers on the Internet, but computers on the Internet cannot access computers in the local area network.

Baidu encyclopedia-intranet ip

Baidu Encyclopedia-Extranet IP