voluntary, intentional, deliberate, willing mean done or brought about of one's own will. voluntary implies freedom and spontaneity of choice or action without external compulsion. a voluntary confession; intentional stresses an awareness of an end to be achieved. the intentional concealment of vital information deliberate implies full consciousness of the nature of one's act and its consequences. deliberate acts of sabotage
PAM is a framework that assists applications in performing what I'll call authentication-related activities. The core pieces of PAM are a library (libpam) and a collection of PAM modules, which are dynamically linked libraries (.so) files in the folder /lib/security.
Authenticated client access to a directory service using LDAP. Digest Authentication can be used as a SASL mechanism for any protocol that has a SASL profile. Using it as a SASL mechanism is a convenient way to support a single authentication mechanism for Web, e-mail, LDAP, and other protocols.