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Pronounced welcome in network security fundamental course.

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Before we enter the video section of network security fundamentals, we must understand broadly the

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meaning of computer network.

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Is that what is the computer network now in network calls his top two or more computers that are linked

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in order to serve this source, exchange fires or allow electronic communications.

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It's called that computer network means that computer network is the matter.

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My image, we connect the computers for action, the different type of computer components.

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Now computer networks are divided into five types.

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First is the local media notebook.

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Shortly we can say it's like a local area network.

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Egypt Private Property Network in a building, a line it used to connect by cell computers and workstations

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in the office or a computer to exchange informations.

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With that, when we want to connect the different type of computers in east smaller area that is knowledge

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land such that your office.

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Second is that men many and on edge metropolitan area and network.

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Metropolitan area network.

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Basically a larger line man can include company office.

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They're done, located.

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Adjusting to or also located in a obesity means that when we connect the computers or the all the CB

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or down diners or knowledge men metropolitan area sniper.

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Now part is the wide area.

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I brought it to school.

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Go out to a wide geographical area means that we want to computer and we want to connect the different

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type of computers in the larger area than is known edge.

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Why did the network?

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And next is the Internet.

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The Internet is a communication that bread that connects one electronic media with another.

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Media supporting technology.

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Stenders.

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It was that transmission control protocol or Internet protocol suits means that when we want to exchange

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the information in the Internet, then we use that DCP IP protocol.

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Is that before you need rules or that DCP IP protocol next is not wireless area network linked to communications

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between computers systems without using cables did wireless.

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Nobody could tell from huge computer networks.

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What I cloyed distance a few meters using your device, Bluetooth transmitter and the distance.

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Why satellites?

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These feelings clearly get closely related to telecommunications, information technology and computer

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engineering.

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Popular type of network in this wireless network category include wireless, local area network and

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Wi-Fi means that the wireless network covered that dipole communications.

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First is the Bluetooth transmitter communications.

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And second is the Wi-Fi communications.

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These are companies, not wireless network.

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Now.

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Next is the what is done network security.

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That why we won that secured network security policy and practice to prevent and monitor access, misuse

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and benign oh and authorized modifications that got on computer network news that we does not want to

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change the information.

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We did not want to change that data into one computer.

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So we require the network security network security fundamental and deliver security that cover that

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basic concept of network security.

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So in this course, reconvert the fundamental parts of the network security.

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No network security consist of several concepts such it confidence, liberty, network security, huge

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full for maintaining the confidentiality of company data mean that we does not want to disclose the

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company data.

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So we require that confidentiality of that company data.

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Next is the integrity.

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Integrity means maintained that consistency, accuracy and trust that data it it must not be changed.

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People who did know to write in it means that he does not want to change that into my other person's

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means that only auton Antarctica persons change that data.

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Next is the availability, make improvement to hardware if needed, and maintain the operating system

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environment next to the automatic ations.

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The sender of the information can be correctly identified and there is a guarantee that the identify

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obtain is not fake is that we want a termination of that data.

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So we require that network security to the known reproduction done.

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Neither sending or receiving information can nor denied those standing and receiving the.

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Macy's.

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So these are just some components.

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So we required up nine to execute.

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So this is the model number one.

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Now we're going to model number two.