Shodan
Shodan.io is a search engine indexing IoT devices and information:
- ⚒️ The apps running on it
- 🌍 The webserver (e.g., Apache) running on it
- 🗺️ The server location
- 🔓 Any open ports
- ...
You can even query statistics, such as, given a web server, which are the top ports commonly open.
Where to learn? 🎓
During the Black Friday/Cyber Monday, it may be sold at 5$ for life.
👻 To-do 👻
Stuff that I found, but never read/used yet.
$ shodan init <api key>
$ shodan host example.com