tmpfs.tech · all tracks · Security & TLS

Block Password Reuse in PAM

Security & TLS · medium · solved in-browser (no VM needed) · 3 tiered hints

Write /etc/pam.d/password-history, a PAM fragment that loads pam_pwhistory.so in the password phase to remember the last 5 passwords (remember=5) and apply the rule to root (enforce_for_root). The line must start with the 'password' type and a 'required' control. (Authored config, graded structurally — the engine isn't run here.)

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