When I was still using Backtrack as pentest Operating System on my netbook, I need to configure everything about networking, include sharing connection over eth0 interface. I must type on the terminal to set up the interface, then set the IP and netmask, etc. After setting the interface connection, I also must to configure iptables to forwarding the internet connection from the other interface into eth0 , and the last step I must turn on forwarding rule. It's really fun, although need several step to do it. But, when I am using Kali Linux, I realise that the step which can I do on backtrack doesn't running on Kali Linux. After learn several option about networking on Kali, finally I can share connection over eth0 on Kali Linux. Okay, the first assume that we must have connected internet (not using eth0 ). Next, when your connection are ready, you can right click on the networking icon, select Edit Connection. Edit Connection When the window "Networking Connectio...