ASecurityAcademy

Recon & Port Scanning

🔒 Pro Easy Course Online Avg. time 25 min Solved by 0 2 keys · 50 pts Recon & Ethics

Every assessment starts with reconnaissance: finding out what exists before deciding what to look at. This exercise covers the two kinds of recon, what port scanning reveals, and how to read the output of nmap, the standard tool — always within the scope you have written permission to test.

Skills covered: Recon
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What you will learn

  • Explain the difference between passive and active reconnaissance
  • Explain what a port is and what an open port tells you
  • Read nmap output and the three essential port states
  • Know the two most-used nmap flags and when recon is allowed

Before you start

These exercises cover what this one builds on.

In this exercise

  1. Two kinds of reconnaissance
  2. Ports and what "open" means
  3. Nmap and reading its output
  4. The two flags, and staying in bounds
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This is a Pro exercise

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4 sections · 2 keys · 50 points