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Preview build: sign-in and grading run on the server. MFA is not enabled, and storage is in server memory so it does not survive a restart.

LearnDefend
Browser LabLD-NMAP-LAB-002Easy
Browser LabLD-NMAP-LAB-002Easy14 min

Open, Closed, or a Wall?

A single host returned a mix of port states. Leadership asks whether a service is exposed. Read the states correctly — one of them means a firewall, not an absent service.

What you will be able to do

  • Distinguish open, closed and filtered correctly.
  • Read filtered as a firewall signal, not an unused port.
Network AnalysisT1046Network Service Discovery

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