Pluggable Authentication Modules: The Definitive Guide to PAM for Linux SysAdmins and C Developers by Kenneth Geisshirt

This book provides a practical approach to UNIX/Linux authentication. The design principles are explained thoroughly, then illustrated through the examination of popular modules. It is intended as a one-stop introduction and reference to PAM. This book is for experienced system administrators and developers working with multiple Linux/UNIX servers or with both UNIX and Windows servers. It assumes a good level of admin knowledge, and that developers are competent in C development on UNIX-based systems.