63 lines
2.8 KiB
Plaintext
63 lines
2.8 KiB
Plaintext
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This directory contains configuration files for the Pluggable
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Authentication Modules (PAM) library.
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Each file details the module chain for a single service, and must be
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named after that service. If no configuration file is found for a
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particular service, the /etc/pam.d/other is used instead. If that
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file does not exist, /etc/pam.conf is searched for entries matching
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the specified service or, failing that, the "other" service.
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See the pam(8) manual page for an explanation of the workings of the
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PAM library and descriptions of the various files and modules. Below
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is a summary of the format for the pam.conf and /etc/pam.d/* files.
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Configuration lines take the following form:
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module-type control-flag module-path arguments
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Comments are introduced with a hash mark ('#'). Blank lines and lines
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consisting entirely of comments are ignored.
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The meanings of the different fields are as follows:
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module-type:
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auth: prompt for a password to authenticate that the user is
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who they say they are, and set any credentials.
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account: non-authentication based authorization, based on time,
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resources, etc.
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session: housekeeping before and/or after login.
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password: update authentication tokens.
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control-flag: How libpam handles success or failure of the module.
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required: success is required; on failure all remaining
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modules are run, but the request will be denied.
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requisite: success is required, and on failure no remaining
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modules are run.
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sufficient: success is sufficient, and if no previous required
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module failed, no remaining modules are run.
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binding: success is sufficient; on failure all remaining
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modules are run, but the request will be denied.
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optional: ignored unless the other modules return PAM_IGNORE.
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arguments: Module-specific options, plus some generic ones:
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debug: syslog debug info.
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no_warn: return no warning messages to the application.
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Remove this to feed back to the user the
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reason(s) they are being rejected.
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use_first_pass: try authentication using password from the
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preceding auth module.
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try_first_pass: first try authentication using password from
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the preceding auth module, and if that fails
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prompt for a new password.
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use_mapped_pass: convert cleartext password to a crypto key.
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expose_account: allow printing more info about the user when
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prompting.
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Note that having a "sufficient" module as the last entry for a
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particular service and module type may result in surprising behaviour.
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To get the intended semantics, add a "required" entry listing the
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pam_deny module at the end of the chain.
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$FreeBSD$
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