Pronounced welcome in network security fundamental course.
Before we enter the video section of network security fundamentals, we must understand broadly the
meaning of computer network.
Is that what is the computer network now in network calls his top two or more computers that are linked
in order to serve this source, exchange fires or allow electronic communications.
It's called that computer network means that computer network is the matter.
My image, we connect the computers for action, the different type of computer components.
Now computer networks are divided into five types.
First is the local media notebook.
Shortly we can say it's like a local area network.
Egypt Private Property Network in a building, a line it used to connect by cell computers and workstations
in the office or a computer to exchange informations.
With that, when we want to connect the different type of computers in east smaller area that is knowledge
land such that your office.
Second is that men many and on edge metropolitan area and network.
Metropolitan area network.
Basically a larger line man can include company office.
They're done, located.
Adjusting to or also located in a obesity means that when we connect the computers or the all the CB
or down diners or knowledge men metropolitan area sniper.
Now part is the wide area.
I brought it to school.
Go out to a wide geographical area means that we want to computer and we want to connect the different
type of computers in the larger area than is known edge.
Why did the network?
And next is the Internet.
The Internet is a communication that bread that connects one electronic media with another.
Media supporting technology.
Stenders.
It was that transmission control protocol or Internet protocol suits means that when we want to exchange
the information in the Internet, then we use that DCP IP protocol.
Is that before you need rules or that DCP IP protocol next is not wireless area network linked to communications
between computers systems without using cables did wireless.
Nobody could tell from huge computer networks.
What I cloyed distance a few meters using your device, Bluetooth transmitter and the distance.
Why satellites?
These feelings clearly get closely related to telecommunications, information technology and computer
engineering.
Popular type of network in this wireless network category include wireless, local area network and
Wi-Fi means that the wireless network covered that dipole communications.
First is the Bluetooth transmitter communications.
And second is the Wi-Fi communications.
These are companies, not wireless network.
Now.
Next is the what is done network security.
That why we won that secured network security policy and practice to prevent and monitor access, misuse
and benign oh and authorized modifications that got on computer network news that we does not want to
change the information.
We did not want to change that data into one computer.
So we require the network security network security fundamental and deliver security that cover that
basic concept of network security.
So in this course, reconvert the fundamental parts of the network security.
No network security consist of several concepts such it confidence, liberty, network security, huge
full for maintaining the confidentiality of company data mean that we does not want to disclose the
company data.
So we require that confidentiality of that company data.
Next is the integrity.
Integrity means maintained that consistency, accuracy and trust that data it it must not be changed.
People who did know to write in it means that he does not want to change that into my other person's
means that only auton Antarctica persons change that data.
Next is the availability, make improvement to hardware if needed, and maintain the operating system
environment next to the automatic ations.
The sender of the information can be correctly identified and there is a guarantee that the identify
obtain is not fake is that we want a termination of that data.
So we require that network security to the known reproduction done.
Neither sending or receiving information can nor denied those standing and receiving the.
Macy's.
So these are just some components.
So we required up nine to execute.
So this is the model number one.
Now we're going to model number two.