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Computer and network security by avi kak lecture12 back to toc 12. In the next section, we will provide a brief overview of what we mean by security and how it applies to your computer network. Understand essential networking concepts in easy language. Before we talk about network security, we need to understand in general terms what security is. Attack in the context of computernetwork security, an attack is an attempt to access resources on a computer or a network without authorization, or to bypass security measures that are in place. Different approaches to computer network security management have different requirements depending on the size of the computer network. Computer security protecting computers, information, and services from unauthorized access, change or destruction. Download free networking courses and tutorials training in pdf lan, wan, router, switcher,the internet, intranet, would you like to learn how computer networks work. A computer network consists of a collection of computers, printers and other equipment that is connected together so that they can communicate with each other. In this free tutorial, we teach you about network security and how it all works. Network security comprises of the measures adopted to protect the resources and integrity of a computer network. They usually come in the form of a textbook and you will get access to a knowledge data base that is useful even for people with some it knowledge.
It covers various mechanisms developed to provide fundamental security services for data communication. A weakness in security procedures, network design, or implementation. Computer security basically is the protection of computer systems and information from harm, theft, and unauthorized use. This tutorial introduces you to several types of network. In this volume, we take a detailed look at network security. Computer networks tutorial for beginners is good for absolute beginners to understand the basics of computer networks, its various types and the osi model. Basic of networking a computer network consists of a collection of computers, printers and other equipment that is connected together so that they can communicate with each other.
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Remote access for employees and connection to the internet may improve communication in ways youve hardly imagined. Overview network security fundamentals security on different layers and attack mitigation. Attack in the context of computer network security, an attack is an attempt to access resources on a computer or a network without authorization, or to bypass security measures that are in place. The network security is a level of protection wich guarantee that all the machines on the network are working optimally and the users machines only possess the rights that were granted to them it could be. Computer networks pdf notes free download cn notes. About the tutorial network security deals with all aspects related to the protection of the sensitive information assets existing on the network. Introduction to network security computer tutorials in pdf.
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Fig 1 gives an example of a network in a school comprising of a local area network or lan connecting computers with each other, the internet, and various servers. This specialization in intended for it professionals, computer programmers, managers, it security professionals who like to move up ladder, who are seeking to. Internet security extends this concept to systems that are connected to the internet browsing the internet. Most of our discussion will assume that the key length is 128 bits. Encryption and decryption are carried out using two di. The objective of this module is to give students basic knowledge of computer security.
Intt o to co pute a d et o secu tyro to computer and network security some challenging fun projects learn about attacks learn about preventing attacks lectures on related topics aliti d ti t itapplication and operating system security web security networksecuritynetwork security some overlap with cs241, web security. Computer security tutorial for beginners learn computer. Director network operations and services, nsu 101720 todays discussion. A computer network is a set of devices connected through links. Network security tutorial pdf version quick guide resources job search discussion network security deals with all aspects related to the protection of the sensitive information assets existing on the network. Computer network vlan acl vacl access and trunk ports. Security is a continuous process of protecting an object from unauthorized access. Computer security generic name for the collection of tools designed to protect data and. As previously mentioned, you can do some research and find other attractive pdf tutorials too. Intt o to co pute a d et o secu tyro to computer and network security some challenging fun projects learn about attacks learn about preventing attacks lectures on related topics aliti d ti t itapplication and operating system security web security networksecuritynetwork security. Network security deals with all aspects related to the protection of the sensitive information assets existing on the network. It covers need of security, types of security, attack sources, network attack types, layered security and mitigation methods, network security algorithms etc. Fundamentals of computer networking and internetworking.
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