Shodan: The scariest search engine on the internet

To find internet-connected EtherNet/IP devices, we could scan the internet for devices with an open EtherNet/IP port (TCP or UDP port 44818). Not only would that take a long time, its legal implications are debatable. Thankfully, there are services out there that have done the heavy lifting for us. is one of these services.

Quoted from Wikipedia (

"Shodan is a search engine that lets the user find specific types of computers (web cams, routers, servers, and so on) connected to the Internet using a variety of filters. This can be information about the server software, what options the service supports, a welcome message ...

Get Industrial Cybersecurity now with O’Reilly online learning.

O’Reilly members experience live online training, plus books, videos, and digital content from 200+ publishers.