Port redirection

In this recipe, we will use Kali to perform port redirection, also known as port forwarding or port mapping. Port redirection involves the process of accepting a packet destined for one port, say port 80, and redirecting its traffic to a different port, such as 8080. The benefits of being able to perform this type of attack are endless because with it you can redirect secure ports to unsecure ports, redirect traffic to a specific port on a specific device, and so on.

How to do it...

Let's begin the process of port redirection/forwarding.

1. Open a terminal window and execute the following command to configure IP tables that will allow our machine to route traffic:

   Sudo echo 1 >> /proc/sys/net/ipv4/ip_forward
   

2. Next, we launch arpspoof to poison traffic going to our default gateway. In this example, the IP address of our default gateway is 192.168.10.1. Arpspoof has a couple of options that we will select and they include:

   • –i allows us to select our target interface. In this...