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Now, let's start with our first lesson of ethical hacking, that is footprinting, all collection of

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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, OK?

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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 footprinting, let's understand what a network is.

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

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Either you accept or not.

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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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OK, now let's understand a basic structure of networking.

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Suppose we have three claims.

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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 one of these three claims 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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OK, they need an access point for that.

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So access point is a router or we can see it as a modem.

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OK, so if any of these claims want to access the Internet first, they have to access this morning

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and then this morning send the request to the Internet.

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OK, so how it works, suppose client one that is our computer system wants to access Facebook dotcom.

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Right.

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So first it has to send this request to the morning and then more time 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, right.

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So data is transferred in packets over the air, right over the air.

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

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

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OK, so we will see how to do that.