Web Application Firewall (WAF)

Date: October 26, 2021
Tags: application, Application Layer Security, CSRF, cybersecurity, Data breaches, firewall, Malicious Requests, open source, Protecting Web Applications, security incidents, sql, SQL Injection, waf, web, Web Application Firewall, Web Application Security, website, XSS
Categories: Resources
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A Web Application Firewall (WAF) is a security tool that is used to protect web applications from various cyber threats. It operates at the application layer of the OSI model and acts as a filter between the internet and the web application. The WAF inspects all incoming traffic to the web application and blocks malicious requests based on pre-defined security policies. It can also detect and prevent various types of attacks such as SQL injection, cross-site scripting (XSS), and cross-site request forgery (CSRF). A WAF can be deployed on-premises, in the cloud, or as a service, and can be used to protect both public and private web applications. The use of a WAF is important in the context of cybersecurity as it provides an additional layer of protection against the rapidly evolving threat landscape, reducing the risk of data breaches and other types of security incidents.

  • ModSecurity is an open-source web application firewall (WAF) that operates on the application layer to monitor, log, and control incoming traffic to web applications. It uses a set of rules to detect and block malicious requests, such as SQL injection and cross-site scripting (XSS) attacks, and provides protection against data breaches and security incidents. ModSecurity is known for its real-time monitoring and its ability to adapt to changing threats.
  • NAXSI, or Nginx Anti Xss & Sql Injection, is a WAF for NGINX, a popular open-source web server. NAXSI is designed for high performance and low maintenance, making it a great option for those who need to secure their web applications but don’t want to spend a lot of time and resources doing so. NAXSI uses a simple rule set to protect against common web application attacks and can be easily configured to meet the specific security needs of each individual web application.
  • sql_firewall Sis a SQL Firewall Extension for PostgreSQL. It provides protection against SQL injection attacks by monitoring and controlling access to a PostgreSQL database. sql_firewall uses a set of rules to detect and block malicious requests, ensuring the security and integrity of the database and its data.
  • ironbee is an open-source framework for developing a web application security sensor, also known as a WAF. IronBee is designed to be highly scalable and flexible, making it suitable for a wide range of use cases and web applications. IronBee provides a set of tools and components for building a custom WAF tailored to the specific security needs of each web application.
  • Curiefense is a WAF that adds a broad set of automated web security tools to the Envoy Proxy. Curiefense provides real-time protection against a wide range of web application attacks, including SQL injection, cross-site scripting (XSS), and cross-site request forgery (CSRF). Curiefense is designed to be fast, flexible, and easy to use, making it a great option for those looking to secure their web applications with a WAF.
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