A pluggable authentication module (PAM) allows programs that rely on authentication to be written independently of the underlying authentication scheme. Next Level3 Cloud Identity JIT Access allows you to protect your endpoints by securing them at the initial user access point. If you enable this feature for a Windows, Linux, or MacOS device, you will have the ability to enable and disable access and manage who has access to that endpoint. This feature is available for Windows, Linux, and MacOS operating systems and below are the steps to enable it.