The IPv4 protocol or Internet Protocol 4 (RFC 791) was originally used in ARPANET.
Although it is the fourth generation of the Internet protocol, it is the first major version of the Internet protocol that finds its application for most of the Internet.
There is a newer IPv6 that is being deployed.
According to IPv4, IP addresses are effectively in binary numbers in the form of 0 and 1. But they can also be written as decimal numbers separated by a point.
IPv4 uses a 32-bit address space equivalent to 4 bytes. This means that the total number of IP addresses on the Internet can be up to 2 ^ 32. That is to say around 4.3 billion addresses.
Translation of the word IPv4
- Internet Protocol version 4
- Version 4 of the Internet Protocol has become obsolete and is gradually giving way to IPv6.
- IPv4 became obsolete and gradually gives away to IPv6.
Where do IP addresses come from?
These addresses, which look like 18.104.22.168, are the Internet protocol addresses assigned to each device that connects to the Internet.
An IP address is the identity of a device on the Internet.
It is also useful for routing incoming and outgoing Internet traffic from this device.
Data travels in the form of packets with the source and destination IP address in their header which allows them to reach the appropriate device.
IP addresses are defined using the Internet protocol, included in the Internet Protocol Suite, which is a set of rules for managing how packets of data travel over the Internet and reach their destination.
For example, you send 10 packets to a destination. Each packet will know the destination IP address, but it is possible that the packets may take different routes to reach the destination, or may not reach in the same order as send or may not reach the destination.
This is because IP is a connectionless protocol.
This means that it does not care about the integrity of the data sent over the network.
TCP, also part of the Internet protocol suite, is there to check packet integrity.
TCP ensures that your packets end up safely on the destination computer.
It establishes a connection between two communicating devices on the Internet and monitors the order and reliability of the data packets reaching the final device.
This is why the IP address is called TCP / IP.