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Overview of Network Protocols: Types and Purpose

What is network protocol. This term is usually understood as a set of rules that define and regulate the procedure for exchanging data between computers connected to the network.

сентябрь 07, 2020

What is network protocol. This term is usually understood as a set of rules that define and regulate the procedure for exchanging data between computers connected to the network.

The life of a modern person is closely connected with advanced technologies. We cannot imagine life without computers, smartphones and other gadgets, because we use it every day. Typically, their use is associated with a network connection for data exchange. Connecting to one of them, we come across such a concept as "network protocol".

Network protocol - what is it?

A set of rules thanks to which it becomes possible to connect and exchange data between any number of computers. In other words, it is what computers use to communicate with each other.

Types of network protocols

In fact, there are many types of network protocols, but we will try to focus only on the most famous ones:

  • MAC (Media Access Control)

A unique identifier assigned to each piece of equipment in computer networks. Every network user meets with him to a greater or lesser extent, because MAC is used to identify network devices.

The essence of the MAC protocol is to ensure that there are no conflicts and to facilitate the transfer of data packets between two computer terminals. A conflict occurs when two or more terminals transmit information at the same time. This leads to a disruption in communications, which can be costly for organizations that rely heavily on data communications.

  • IP (Internet Protocol)

Internet protocol, which unites individual computer networks into the worldwide Internet. IP unites network segments into a single network, ensuring the delivery of data packets between any network nodes, assigns unique IP addresses to devices.

  • HTTP (HyperText Transfer Protocol)

A data transfer protocol, used to be used for HTML documents, but is now used to transfer arbitrary data. Most sites work on the "foundation" of HTTP.

  • SSH (Secure Shell)

A network protocol that is needed for remote access to the operating system. Allows you to manage securely within a network that is not secure. The advantage of SSH is a reliable communication channel between client and server.

  • SFTP (SSH File Transfer Protocol, also Secure File Transfer Protocol)

Secure file transfer protocol, supports security and SSH authentication functions. Also protects against interception of passwords, data integrity using encryption and cryptographic hash functions.

  • POP3 (Post Office Protocol Version 3)

A protocol for working with e-mail, specifically, for receiving notifications. An alternative is IMAP (Internet Message Access Protocol).

  • FTP (File Transfer Protocol)

Required for transferring files between computers. It can work in both active and passive mode, but it is not recommended to use this server to transfer important data.

So, we have covered the main types of network protocols. Of course, in fact, there are many more of them, but the above ones have become mainstream and popular. We hope this article helped you understand the functioning of a computer network.