Step 1: Download the agent installer
Head to the Nessus agent download page:
Select the right installer package for your flavour of Linux.
Download the file and keep a note where you've saved it.
Step 2: Install the agent
Fedora, Red Hat, CentOS, and Oracle Linux:
rpm -ivh [NessusAgent package].rpm
dpkg -i [NessusAgent package].deb
Step 3: Configure and link the agent
To configure each device for scanning you'll need two pieces of information, your Prefix and a Key. You can find these in the Internal Scanning section of the settings page inside the Intruder portal:
Calculate your DeviceName as follows:
DeviceName = Prefix_TargetName
... where TargetName is what you'd like the target to be called in the portal.
For example, if your Prefix is DQEGBQUAAAc and your want to name your device 'paul-laptop':
DeviceName = DQEGBQUAAAc_paul-laptop
Once you have the above information ready, open a Terminal window and run the following command:
/opt/nessus_agent/sbin/nessuscli agent link --name=DeviceName --key=Key --cloud
Note: The location of nessuscli might vary depending on your version of Linux