Shodan: The Search Engine for Internet Devices
Use Shodan to find exposed services, default credentials, and vulnerable software versions.
What is Shodan?
Shodan is a search engine that continuously scans the entire internet and indexes banners from services on open ports. Unlike Google which indexes web content, Shodan indexes service responses — SSH banners, HTTP headers, FTP greetings, and more.
What Shodan Indexes
Shodan captures data from hundreds of protocols:
- HTTP/HTTPS servers and their headers
- SSH/Telnet banners including software version
- FTP/SMTP/RDP/VNC services
- Industrial control systems (ICS/SCADA)
- IoT devices: cameras, routers, printers
- Databases: MongoDB, Elasticsearch, Redis
All lessons in this course
- Google Dorking for Information Gathering
- WHOIS, DNS Enumeration, and Certificates
- Shodan: The Search Engine for Internet Devices
- Social Media and People-Search OSINT