As of this writing Nessus was listed as version 8.13
Step 1: Download Nessus from https://www.tenable.com/downloads/nessus?loginAttempted=true. Choose the Ubuntu packages (or the Debian ones)
Step 2: Open a Terminal and go to the download directory (cd)
Run sudo dpkg -i Nessus*.deb. Enter root password.
In case, you have to install a C++ lib sudo apt-get install lib32stdc++6
Step 3: Start it sudo /etc/init.d/nessusd start
Step 4: Open a browser and go to https://localhost:8834/
Naturally if you are viewing from your workstation and not the Ubuntu server you are working for please substitute your IP address for “localhost”