Cain & Abel is a specifically designed for Microsoft Windows . While it is a legendary name in cybersecurity circles, it is not natively available for Kali Linux . Tool Overview
Click the "Sniffer" tab and then the "Start/Stop Sniffer" icon. cain and abel in kali linux
You are on the same LAN as a victim (192.168.1.20). The gateway is 192.168.1.1. You want to capture HTTP login credentials. Cain & Abel is a specifically designed for Microsoft Windows