Tenable Essential is a free vulnerability tool in the market. It only supports 16 hosts of small or lab environment.
We downloaded the VM version for quick and simple deployment. (Check below link)
https://www.tenable.com/downloads/tenable-appliance#tenablecore-nessus
“Tenable-Core-Nessus-20190415.ova“
Upload the above ova file to VMware storage and install with the “Deploy OVF Template” option.
After completion of installation, you will see the below web management access info below
What is default login for web management?
Googling for a few ten minutes, found as below
Default web management pwd : admin/admin or wizard/admin on the 8000 port.
I hope it is informative for you
Thank you