Update Nessus Scanner (WIN10)

Download the Latest Version of Nessus

• Navigate to = https://www.tenable.com/downloads

Launch the Trellix Desktop Application and disable Threat Prevention and Firewall settings

• In the WIN10 taskbar, right click on the Trellix icon and click McAfee Endpoint Security
• On the top right, click the down arrow, click Administrator Log On and enter the password.
• Click on Threat Prevention, and uncheck the following boxes
  • Enable Access Protection
  • Enable Exploit Prevention
  • Enable On-Access Scan
  • Enable ScriptScan (scans scripts in browser only)
    • Click Apply
• Click on Firewall and uncheck the following boxes
  • Enable Firewall
    • Click Apply

Install The Latest Version of Nessus on the Machine

• Navigate to where you saved the Nessus installation file and install the application.

Confirm the Latest Version of Nessus is Installed

• Open a browser and navigate to https://localhost:8834
  • Nessus may take a while “compiling plugins” during the initial login
• Log into Nessus with the necessary credentials
• Click “settings” and the version should now reflect the latest update.
  • If the version didn’t reflect the updated number, launch the Services application and restart the “Tenable Nessus” service, reboot and check again.

Reboot the machine and the Trellix/McAfee Settings Will be Re-enabled

Update Nessus Scanner (RHEL)

Download the Latest Version of Nessus in the /tmp Directory

• Navigate to = https://www.tenable.com/downloads

Uninstall Previous Version of Nessus

• Stop the running Nessus service

/bin/systemctl stop nessusd.service

• Determine the currently installed Nessus package name

rpm –qa | grep Nessus

• Remove/Uninstall Nessus

rpm –e Nessus

Install The Latest Version of Nessus on the Machine

• Navigate to the /tmp directory

cd /tmp

• Install The Latest Version of Nessus

rpm –ivh “filename”.rpm

• Start the Nessus service

/bin/systemctl start nessusd.service

• You may receive a message “Warning: nessusd.service changed on disk”. If you do run this command to reload the daemon:

systemctl daemon-reload

Confirm the Latest Version of Nessus is Installed

• Open a browser and navigate to https://localhost:8834
  • Nessus may take a while “compiling plugins” during the initial login
• Log into Nessus with the necessary credentials
• Click “settings” and the version should now reflect the latest update.
  • If the version didn’t reflect the updated number, reboot and check again.

  Congratulations. That’s it!! You have successfully updated the Nessus scanner.

  📝 Tenable Nessus Release Notes: The official Tenable release notes provides great additional information about each update.