Pluggable Authentication With PAM
Authentication and authorization is one of foundational aspects of any security system. However writing an authentication and authorization system can be anything but: There are complex, ever-changing requirements, not to mention differences for differing interfaces it can quickly become daunting. However, there already exists a system on Linux and Unix that allows for dynamic and complex authentication: PAM. PAM Modules and Authentication Types Fundamentally, PAM is a collection of modules that provide several methods....