Shodan is a search engine that looks for devices that are connected to the internet. It lists the device’s IP address, services and banner. This is a useful tool for searching devices like routers, servers, CCTV cameras, and other IoT devices.
Using Shodan for gathering information is a passive method, which means you are not actually accessing any device that you are getting information of.
Searching for a hostname and open services:hostname: {DOMAIN_NAME} port:"{PORT_NUMBER}"

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Vulnerabilities
