It is a protocol that delivers packets through the Internet network.
It has the characteristics of being connectionless and unreliable.
Connectionless means it does not predetermine the path for sending packets.
Unreliable means it does not guarantee complete packet delivery.
Difference Between Public IP and Private IP
Public IP
A globally unique IP address provided by an ISP (Internet service provider).
Because it is exposed externally, it can be accessed by other devices connected to the Internet.
Therefore, security settings such as a firewall must be configured.
Private IP
An IP address used inside a specific network.
Because the shortage of IPv4 addresses makes it impossible for every network to use public IP addresses, it is a virtual address assigned through a router inside a network.
It cannot be accessed from outside without separate configuration.