![]() ![]() Banner GrabbingĪ banner grab is performed by sending an HTTP request to the web server and examining its response header. They all strive to elicit some response from the web server which can then be compared to a database of known responses and behaviors, and thus matched to a known server type. The fundamental premise by which all these techniques operate is the same. Techniques used for web server fingerprinting include banner grabbing, eliciting responses to malformed requests, and using automated tools to perform more robust scans that use a combination of tactics. Determine the version and type of a running web server to enable further discovery of any known vulnerabilities.In particular, servers running older versions of software without up-to-date security patches can be susceptible to known version-specific exploits. While web server fingerprinting is often encapsulated in automated testing tools, it is important for researchers to understand the fundamentals of how these tools attempt to identify software, and why this is useful.Īccurately discovering the type of web server that an application runs on can enable security testers to determine if the application is vulnerable to attack. Web server fingerprinting is the task of identifying the type and version of web server that a target is running on. Home > Latest > 4-Web Application Security Testing > 01-Information Gathering Fingerprint Web Server ID
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