Extracting information from servers with Shodan
In this section, you'll learn Shodan basics for getting information from banner servers and versions of the operating system. Rather than indexing the web content, Shodan indexes information about headers, banners, and the versions of the server and operating system they are running.
Shodan (https://www.shodan.io) is an acronym for Sentient Hyper-Optimized Data Access Network (System Shock 2). Unlike traditional search engines that crawl the web to show results, Shodan tries to capture data from ports and open services, so if you know how to search for information related to open services in specific servers, you can discover vulnerabilities in web servers.
Shodan is a search engine responsible for examining and monitoring internet-connected devices and different types of devices (for example, IP cameras) and extracting useful information about services running on those destinations.
Accessing Shodan services
Unlike other...