Once the file is downloaded, use the package manager specific to your distribution to install it. Ubuntu/Debian: sudo dpkg -i Nessus-*.deb . RHEL/CentOS: sudo rpm -ivh Nessus-*.rpm . Start the Nessus service: sudo systemctl enable --now nessusd Use code with caution. Verify the service status: sudo systemctl status nessusd Use code with caution. Ensure the status is "active (running)". Post-Installation Configuration
Upon entering the activation code, Nessus will automatically download and compile the necessary vulnerability plugins. nessus download curl
For large-scale deployments, you can also use nessuscli to activate the scanner directly from the command line: Once the file is downloaded, use the package
curl --request GET \ --url 'https://www.tenable.com/downloads/api/v2/pages/nessus/files/Nessus-10.8.3-el9.x86_64.rpm' \ --output 'Nessus-10.8.3-el9.x86_64.rpm' Use code with caution. Installation Steps Start the Nessus service: sudo systemctl enable --now
/opt/nessus/sbin/nessuscli fetch --register Use code with caution. Install Tenable Nessus on Linux
You will need an activation code, which can be obtained by registering for Nessus Essentials (the free version) or purchasing a professional license.