Scanning Networks — Certified Ethical Hacker (CEH) Master

The official ECCOUNCIL documentation our Scanning Networks practice questions are cited to. Review the primary sources, then practise.

Official references for this objective

Eccouncil — Certified Ethical Hacker (CEH) | #1 Ethical Hacking Certification | EC-Council

Enumerating those ports and the services running on them can be used to expose common vulnerabilities and weaknesses in systems.
Eccouncil — Certified Ethical Hacker (Practical) | CEH Exam Practical | EC-Council

Perform OS banner grabbing, service, and user enumeration.