Note 8.3.1.
Nessus runs a web interface on localhost with a self-signed certificate, so you will need to accept it to continue.
www.tenable.com/products/nessus/nessus-essentials
ipconfig
on a Windows device or ifconfig
on a Mac to find your Wifi adapter IP address. Exchange IP addresses with a friend (you will scan each other) and put your friend’s IP into the Welcome to Nessus Essentials dialog. When you click Next Nessus will begin the host discovery step, making sure that the IP address you put in actually corresponds to an active host. Click the checkbox next to the host once it shows up in Host Discovery and run the scan. You’ll notice the status is Running while the scan is being performed.