Once you have your code from Tenable, follow these steps to activate: Nessus Activation Code - Tenable

Restricted to scanning a maximum of 16 IP addresses .

Two days later, Elias was in the office. He had convinced his boss to let him run a preliminary scan on a development subnet. He fired up his laptop, connected to the VPN, and let Nessus loose.

Elias learned three hard lessons that week:

that allows you to scan up to 16 IP addresses indefinitely, making it ideal for home labs and small-scale testing. Academic Licensing : Students and educators can often access Nessus Essentials Plus