Before you leave...
Take 20% off your first order
20% off
Enter the code below at checkout to get 20% off your first order
Discover summer reading lists for all ages & interests!
Find Your Next Read

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:
Transform PAM from a headache to an ally with PAM Mastery
Thanks for subscribing!
This email has been registered!
Take 20% off your first order
Enter the code below at checkout to get 20% off your first order