Carpathian Journal of Electrical Engineering (Dec 2023)
COMPUTER NETWORK SECURITY
Abstract
Computers that we connect to a network serve to exchange data, which is located in the computer’s working memory. Data transmission can also be done through electronic signals, and these connections can be wireless networks or wired networks. The bits that are sent one after another simultaneously correspond at an appropriate speed, converting digital signals into analog signals and vice versa, which is a modern process. Computers can also be connected to a local network and a branched network. Each computer connected to the network has its own unique number (address) from which it can be recognized on which continent it is, in which country, and to which server address it is connected. Data is sent according to a pre-agreed protocol, in the form of packets. Security measures for protecting sensitive data and documents have existed for a long time in the world. Throughout history, many methods have been developed regarding data protection and internet security. Methods of providing protection on the internet were sometimes not effective and did not provide the necessary level of protection. With the development of cryptography and technology, very good methods of encryption and document protection have been discovered. Information systems are the foundation of basic and modern business operations. Their fundamental task is to be based on network systems, as well as their operation and security. That’s why it’s extremely important to familiarize ourselves with the security issues of computer networks and the ways in which these problems are resolved.
