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Now let's start with our first lesson of ethical hacking.

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That is foot printing, all collection of information.

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So this is the very first step of ethical hacking.

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That is, we want to collect data or information about our target as much as possible.

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The more we collect info, the more are the chances that we get hack into our target.

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Right.

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But before starting with foot printing, let's understand what a network is.

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See, in simple terms, connecting two or more devices is called a network.

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Right now, either you accept or not, each of us are connected via networking in our day to day life.

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Right?

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If you are using your smartphone and accessing the Internet, that is a networking.

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Now, let's understand a basic structure of networking.

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Suppose we have three clients.

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Client one is your computer system.

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Client two is your laptop, and client three is your smartphone.

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Right now we connect all of these three clients in order to share any data or resources.

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Now, suppose our resources is the Internet, right?

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But these three cannot access Internet directly.

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They need an access point for that.

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So access point is your router.

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Or we can say it as a modem.

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So if any of these client want to access the Internet first, they have to access this model and then

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this modem sends the request to the internet.

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So how it works.

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Suppose client one that is our computer system wants to access facebook.com.

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Right.

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So first it has to send this request to the model and then model forward this request to the internet

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and then internet reply to your modem and then from modem to your client.

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Right.

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So this is how a basic networking works.

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Now data are transmitted into packets in a network, whether it is a wired network or wireless.

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In our case, we suppose that it's a wireless network.

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Right.

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So data is transferred in packets over the air.

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Right over the air.

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So as a hacker, we can intercept all of these data, right?

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We can capture those packets and then we can read the data.

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So we will see how to do that.