INTERMEDIATE • Service Hardening

ufw Threat Validation Procedure #35

Lesson context: Service Hardening (Intermediate level). ufw Threat Validation Procedure #35 teaches a defensive workflow for ufw with least-privilege access mapping. Scenario: school LMS portal (harden service-to-service trust boundaries). At Intermediate level, this lesson emphasizes practical controls and measurable risk reduction. Command focus: ufw, ssh-keygen, rsync; objective: harden service-to-service trust boundaries.