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Linux Pluggable Authentication Modules (PAM) provide dynamic authentication support for applications and services in a Linux or GNU/kFreeBSD〔https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=220980〕 system. Linux PAM is evolved from the Unix Pluggable Authentication Modules architecture. Linux-PAM separates the tasks of authentication into four independent management groups: * account modules check that the specified account is a valid authentication target under current conditions. This may include conditions like account expiration, time of day, and that the user has access to the requested service. * authentication modules verify the user's identity, for example by requesting and checking a password or other secret. They may also pass authentication information on to other systems like a keyring. * password modules are responsible for updating passwords, and are generally coupled to modules employed in the authentication step. They may also be used to enforce strong passwords. * session modules define actions that are performed at the beginning and end of sessions. A session starts after the user has successfully authenticated. ==See also== * OpenPAM * fprint 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Linux PAM」の詳細全文を読む スポンサード リンク
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