1. Update Repositories: Ensure your Kali Linux system is up to date by running:

   sudo apt update && sudo apt upgrade

2. Install OpenVAS Package: Use the following command to install OpenVAS:

   Sudo apt install OpenVAS

3. Setup and Configuration: After installation, you’ll need to set up OpenVAS using the following commands:

   sudo openvas-setup

4. Start OpenVAS Services: Once the setup is complete, start the OpenVAS services with:

 

   sudo systemctl start openvas-scanner

   sudo systemctl start openvas-manager

   sudo systemctl start openvas-gsa

5. Access OpenVAS Web Interface: Open a web browser and navigate to `https://localhost:9392` to access the OpenVAS web interface. Follow the on-screen instructions to log in and start using OpenVAS.

Now, let’s delve into what OpenVAS is used for and how it functions. OpenVAS employs a database of known vulnerabilities to scan networks, servers, and applications for weaknesses that attackers could exploit. It utilizes a wide range of vulnerability tests, including remote and local security checks, to assess the security posture of the target system.

Upon completion of a scan, OpenVAS generates comprehensive reports detailing identified vulnerabilities, along with severity levels and recommended remediation actions. These reports aid security professionals and system administrators in prioritizing and addressing security flaws to bolster the overall security of their systems.

From a user perspective, OpenVAS provides a user-friendly web interface that simplifies the process of configuring scans, monitoring progress, and analyzing results. Additionally, it supports automation and scheduling of scans, allowing for regular security assessments without manual intervention.

In summary, OpenVAS is a valuable tool in the arsenal of cybersecurity professionals, enabling them to proactively identify and mitigate security vulnerabilities, thereby fortifying the defenses of networks, servers, and applications against potential threats.