In this section, we will be using the RSA asymmetric algorithm to protect our tunnel. Now, to review the requirements for asymmetric encryption: as we said, each entity has its own key pair; when I say key pair, I mean a public and a private key. The final key-pair distribution will be as follows. The client will hold its own private key and the server's public key. On the other side, the server or the Kali machine will hold its own private key and the target's public key. So, when we want to send a message or command to our target from the Kali side, first we will encrypt that message using the target's public key and then we will send it over the tunnel in encrypted format. The target will grab that command or message, and using its private key it can decrypt it and extract it back to clear text. The reply, after executing the command, will be encrypted using the server's public key. After that, we will send it out in encrypted format to the network and...