{"id":26944,"date":"2023-05-17T16:51:58","date_gmt":"2023-05-17T08:51:58","guid":{"rendered":"https:\/\/www.exabytes.sg\/blog\/?p=26944"},"modified":"2023-05-17T16:51:58","modified_gmt":"2023-05-17T08:51:58","slug":"web-application-firewall-waf-security-control","status":"publish","type":"post","link":"https:\/\/www.exabytes.sg\/blog\/web-application-firewall-waf-security-control\/","title":{"rendered":"Web Application Firewall: Your Impenetrable Fortress of Security Control"},"content":{"rendered":"

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A Web Application Firewall<\/a> (WAF) is a form of security control that protects websites and web applications from cyberattacks. Essentially, a WAF is similar to a doorman at an exclusive club who decides who goes in and who does not. <\/span><\/p>\n

It functions by analyzing the traffic between the internet and the web application and blocking any suspicious activity. In contrast to traditional firewalls, which are designed to protect networks, WAFs are primarily concerned with web-based attacks. <\/span><\/p>\n

Runtime Application Self-Protection<\/a> (RASP) is a more recent technology that detects and blocks assaults in real-time, as they occur within the application itself.<\/span><\/p>\n

Web Application Firewall (WAF) – What is it?<\/b><\/h2>\n

A web application firewall or WAF aids in the protection of web applications by filtering and monitoring HTTP traffic between a web application and the Internet. It typically protects web applications from a variety of attacks, including cross-site forgery, cross-site scripting (XSS), file inclusion, and SQL injection<\/a>. <\/span><\/p>\n

A WAF is a defense at protocol layer 7 (in the OSI model) and is not designed to defend against all forms of attack. Typically, this technique of attack mitigation is part of a suite of tools that, when combined, provide comprehensive defense against a variety of attack vectors.<\/span><\/p>\n

What is the function of a web application firewall (WAF)?<\/b><\/h2>\n

A WAF safeguards your web applications by filtering, monitoring, and barring any malicious HTTP\/S traffic traveling to the web application and preventing any unauthorized data from leaving the application. <\/span><\/p>\n

It accomplishes this by adhering to a set of policies that assist in determining which traffic is malicious and which is secure. In the same way that a proxy server functions as an intermediary to protect the identity of a client, a WAF acts as an intermediary to protect the web application server from a potentially malicious client. This is known as a reverse proxy.<\/span><\/p>\n

WAFs can be implemented as software, a hardware appliance, or as a service. Policies can be modified to accommodate the specific requirements of your web application or collection of web applications. <\/span><\/p>\n

Although many WAFs require regular policy updates to address new vulnerabilities, machine learning advancements enable some WAFs to update themselves. This automation is becoming more crucial as the complexity and ambiguity of the threat landscape continue to increase.<\/span><\/p>\n

What is the Difference Between a WAF and a Firewall?<\/b><\/h2>\n

A web application firewall (WAF) is designed to safeguard the application layer by analyzing each HTTP\/S request at the application layer. It is typically aware of the user, session, and application, as well as the web applications and services they support. <\/span><\/p>\n

Because of this, you can consider a WAF to be the intermediary between the user and the app, analyzing all communications before they reach either the app or the user. Traditional WAFs ensure that only permitted actions (based on security policy) are allowed. <\/span><\/p>\n

WAFs are the first line of defense for applications in many organizations, particularly for protection against the OWASP Top 10<\/a> \u2014 the foundational list of the most common application vulnerabilities.<\/span><\/p>\n

Currently included in this list’s Top 10 are:<\/span><\/p>\n