PAM Mastery

Pluggable Authentication Modules: Threat or Menace?
PAM is one of the most misunderstood parts of systems administration. Many sysadmins live with authentication problems rather than risk making them worse. PAM’s very nature makes it unlike any other Unix access control system.
If you have PAM misery or PAM mysteries, you need PAM Mastery!
With PAM Mastery, you’ll understand:
the different versions of PAMthe intricacies of Linux-PAM and OpenPAMhow PAM policies make decisionshow to debug PAMthe most frequently seen PAM modulesLinux-PAM extended controls and substackstime-based one-time passwordsusing SSH keys for more than SSHpassword quality testingpolicies from CentOS, Debian, and FreeBSDand more!Transform PAM from a headache to an ally with PAM Mastery