Time for action – deauthentication DoS attack

Follow these instructions to get started:

1. Let's configure the Wireless Lab network to use Open Authentication and no encryption. This will allow us to see the packets using Wireshark easily:
   
2. Let's connect a Windows client to the access point. We will see the connection in the airodump-ng screen:
   
3. Now, on the attacker machine, let's run a directed deauthentication attack against this:
   
4. Note how the client gets disconnected from the access point completely. We can verify this on the airodump-ng screen as well:
   
5. If we use Wireshark to see the traffic, you will notice a lot of deauthentication packets that we just sent over the air:
   
6. We can do the same attack by sending a Broadcast deauthentication packet on behalf of the access point to the entire wireless network. This will have the effect of disconnecting all connected clients:
   

What just happened?

We successfully sent deauthentication frames to both the access point and the client...