Now, let's start with our first lesson of ethical hacking, that is footprinting, all collection of
information.
So this is the very first step of ethical hacking.
That is, we want to collect data or information about our target as much as possible, OK?
The more we collect info, the more are the chances that we get hack into our target.
Right.
But before starting with footprinting, let's understand what a network is.
See, in simple terms, connecting two or more devices is called a network right now.
Either you accept or not.
Each of us are connected via networking in our day to day life.
Right.
If you are using your smartphone and accessing the Internet, that is a networking.
OK, now let's understand a basic structure of networking.
Suppose we have three claims.
Client one is your computer system.
Client two is your laptop and client three is your smartphone.
Right now we connect one of these three claims in order to share any data or resources.
Now, suppose our resources is the Internet, right?
But these three cannot access Internet directly.
OK, they need an access point for that.
So access point is a router or we can see it as a modem.
OK, so if any of these claims want to access the Internet first, they have to access this morning
and then this morning send the request to the Internet.
OK, so how it works, suppose client one that is our computer system wants to access Facebook dotcom.
Right.
So first it has to send this request to the morning and then more time this request to the Internet
and then Internet reply to your modem and then from modem to your client.
Right.
So this is how a basic networking works.
Now, data are transmitted into packets in a network, whether it is a wired network or wireless.
In our case, we suppose that it's a wireless network, right.
So data is transferred in packets over the air, right over the air.
So as a hacker, we can intercept all of this data, right?
We can capture those packets and then we can read the data.
OK, so we will see how to do that.