Step-by-Step Guide: Installing Nessus on Linux:

Step-by-Step Guide: Installing Nessus on Linux:

⚠️ Disclaimer: The content presented in this video is strictly for educational and informational insights. Unauthorized exploration or exploitation of vulnerabilities is both illegal and against ethical standards. It is imperative to obtain proper permissions and adhere to ethical practices before conducting any tests.

Prerequisites

Ensure you have administrative privileges on your Linux system.

Verify that your system meets the minimum hardware requirements for Nessus.

Have an active internet connection for downloading Nessus and necessary updates.

Download Nessus

Visit the official Nessus website: https://www.tenable.com/products/nessus/nessus-essentials

Register for a Nessus Essentials account or log in if you already have one.

Select the appropriate version of Nessus for your Linux distribution (e.g., Debian, RPM).

Installing Nessus

Open your terminal.

Navigate to the directory where you downloaded Nessus. For example, cd ~/Downloads.

Depending on your Linux distribution, use the appropriate command to install Nessus:

For Debian-based systems: sudo dpkg -i Nessus- -debian6_amd64.deb

For RPM-based systems: sudo rpm -ivh Nessus- -fc20.x86_64.rpm

Replace with the actual version number of the file you downloaded.

Starting Nessus

After installation, start the Nessus service by running sudo systemctl start nessusd.service.

Enable Nessus to start on boot with sudo systemctl enable nessusd.service.

Accessing Nessus

Open a web browser and navigate to https://localhost:8834.

You may encounter a security warning due to Nessus using a self-signed SSL certificate. Proceed to the website (this process varies by browser).

Setting Up Nessus

On the Nessus setup screen, create an administrator username and password.

Enter your Nessus activation code (obtained during registration).

Wait for Nessus to initialize, which may take some time as it downloads plugins and components.

Using Nessus

Once initialization is complete, log in with your administrator credentials.

Begin by creating a new scan or setting up policies according to your requirements.

Updating Nessus

Regularly check for updates to Nessus and its plugins for security and functionality enhancements.

Update Nessus with sudo nessuscli update or through the Nessus web interface.

Troubleshooting

If you encounter issues, refer to the Nessus documentation or forums for troubleshooting tips.

Ensure that your firewall settings allow traffic on port 8834.

Conclusion

You have successfully installed and configured Nessus on your Linux system.

Explore the extensive features of Nessus to enhance your network's security posture.