Now before we start talking about networking you need to have a basic understanding on how networks
work.
Now we all know that a network usually contains a number of clients connected to each other.
Clients usually connect to a network an order to share data or share a resource.
A really good example of a resource that we all have connected to networks in order to access is the
Internet so we connect to why five networks and even wired networks all the time just to access the
Internet.
Now all networks whether it's wife Y or wired work on the same principle they have a device that is
considered a server.
Now in many cases for example in your home network this server is your outer.
This is also referred to as an access point.
Now this writer or a server or access point is the only device that has access to the source.
So none of these clients have direct access to the resources even after connecting to the network.
The only way they can access the resource is through the access point.
So let's say for example you're a client number one and you're connected to your home network over a
wife or over their net over a cable.
And then you opened your browser and you typed Google dot com.
What happens is your computer will send a request to the access point asking for Google dot com.
The access point has access to the resaw is which is the Internet.
In this example.
So it's going to go and look for Google dot com.
It will receive Google dot com and it'll forward that response to your computer.
And as a result you will see the Web site loading on your browser.
So if you actually go to your outer at home and look at it you'll see this bike.
It's connected through a cable to the wall.
And this is how it's getting its Internet access.
Therefore it is the only device in your network that has direct access to the resource.
And none of your computer is none of the computer is connected to the network can't access the source
or can't access the internet without the router without the access point.
So the only way for all of the connected clients to access the resource is to go through their outer.
No the data tries varied between the clients and the access point packets.
So you could think of all of these arrows as a series of packets being transmitted between the client
and thereafter as requests and responses.
Now in Wife I networks these packets are transmitted in the air.
Therefore if you have a wireless card and you're within range you'll be able to capture all of these
requests and responses.
So basically you'll be able to see anything that any computer connected to the same network as you does
on the internet because you will have to send all of this data through the access point.
And because they're sending data in the area because you're in a wife network you'll basically be able
to capture these requests and the responses and you'll be able to see that you are.
LS they visit the user names the passwords they enter the chat messages anything they do on the Internet
will be sent us packets.
And therefore you'll be able to capture it and analyze it.
We'll talk more about that and more about how networks work as we go through the course.
This is enough to get you going through the next few lectures so that you can sniff to analyze it and
start launching some cool free connection tags.