Franklin Ohaegbulam
Franklin Ohaegbulam

Franklin Ohaegbulam

The Internet : An overview of how it works

The Internet : An overview of how it works

An brief introduction to the internet and world wide web.

Franklin Ohaegbulam's photo
Franklin Ohaegbulam
·May 8, 2022·

2 min read

The Internet is usually misinterpreted to be the Web. However, it is the technical infrastructure that makes the Web, which is made up of a large network of computers independently distributed and linked through Ethernet cables or wirelessly via WiFi or Bluetooth.

The router is connected to each computer on the network and delivers messages from a computer to the right destination (another computer). The Internet is accessible by telephone using a modem connected to Internet Service Provider (ISP).

Before the message is sent to a computer, the Internet Protocol Address (IP Address) is specified. The IP address is made up of a series of four numbers separated by dots unique to each computer device on the internet network (for example, 174.158.3.192). It is easily associated through the Domain name system (DNS) - an open public communication protocol. For instance, the domain codeclannigeria.dev is easier to access instead of using the IP address.

Information is transferred from one computer to another as packets through various routes. The Transmission Control Protocol (TCP) manages the sending and receiving of the packets. When a uniform resource location (URL) is entered in a web browser, your computer communicates with another computer known as the Web Server which sends information via the Hypertext Transfer Protocol (HTTP). To prevent hacks or snooping, it is advisable to communicate on secure channels - Secure Sockets Layer (SSL) and Transport Layer Security (TLS) which is identified as HTTPS, "S" stands for Secured.

We exchange private data on the internet such as passwords, credit card numbers, bank details, emails, etc. These can be kept secret by encryption, by converting text messages into a data stream that looks meaningless. It can be unscrambled by the Decryption process. A public key is shared with everyone and can be encrypted by any party while a private key can only be decrypted by a computer with the right access.

 
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