Vulnerability Scanning is the process of detection of security flaws in the Web-based Application. We can perform automated Scanning using various tools. OWaASP has a project named Nettacker which is built to automate the various phases like Information Gathering, Enumeration, Scanning, Vulnerability Scanning, etc. Along with this Nettacker tool eventually generates a report for networks, including services, bugs, vulnerabilities, misconfigurations, and other information. Nettacker tool is developed in the Python Language and available on the GitHub platform. Nettacker tool is open-source and free to use the tool. Nettacker tool supports bypassing of Firewall/IDS/IPS devices on the target server.