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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 14:22:51 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 14:22:51 +0000 |
commit | 9ada0093e92388590c7368600ca4e9e3e376f0d0 (patch) | |
tree | a56fe41110023676d7082028cbaa47ca4b6e6164 /modules/pam_lastlog/pam_lastlog.8 | |
parent | Initial commit. (diff) | |
download | pam-upstream/1.5.2.tar.xz pam-upstream/1.5.2.zip |
Adding upstream version 1.5.2.upstream/1.5.2upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'modules/pam_lastlog/pam_lastlog.8')
-rw-r--r-- | modules/pam_lastlog/pam_lastlog.8 | 197 |
1 files changed, 197 insertions, 0 deletions
diff --git a/modules/pam_lastlog/pam_lastlog.8 b/modules/pam_lastlog/pam_lastlog.8 new file mode 100644 index 0000000..325456e --- /dev/null +++ b/modules/pam_lastlog/pam_lastlog.8 @@ -0,0 +1,197 @@ +'\" t +.\" Title: pam_lastlog +.\" Author: [see the "AUTHOR" section] +.\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/> +.\" Date: 09/03/2021 +.\" Manual: Linux-PAM Manual +.\" Source: Linux-PAM Manual +.\" Language: English +.\" +.TH "PAM_LASTLOG" "8" "09/03/2021" "Linux-PAM Manual" "Linux\-PAM Manual" +.\" ----------------------------------------------------------------- +.\" * Define some portability stuff +.\" ----------------------------------------------------------------- +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.\" http://bugs.debian.org/507673 +.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html +.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +.ie \n(.g .ds Aq \(aq +.el .ds Aq ' +.\" ----------------------------------------------------------------- +.\" * set default formatting +.\" ----------------------------------------------------------------- +.\" disable hyphenation +.nh +.\" disable justification (adjust text to left margin only) +.ad l +.\" ----------------------------------------------------------------- +.\" * MAIN CONTENT STARTS HERE * +.\" ----------------------------------------------------------------- +.SH "NAME" +pam_lastlog \- PAM module to display date of last login and perform inactive account lock out +.SH "SYNOPSIS" +.HP \w'\fBpam_lastlog\&.so\fR\ 'u +\fBpam_lastlog\&.so\fR [debug] [silent] [never] [nodate] [nohost] [noterm] [nowtmp] [noupdate] [showfailed] [inactive=<days>] [unlimited] +.SH "DESCRIPTION" +.PP +pam_lastlog is a PAM module to display a line of information about the last login of the user\&. In addition, the module maintains the +/var/log/lastlog +file\&. +.PP +Some applications may perform this function themselves\&. In such cases, this module is not necessary\&. +.PP +The module checks +\fBLASTLOG_UID_MAX\fR +option in +/etc/login\&.defs +and does not update or display last login records for users with UID higher than its value\&. If the option is not present or its value is invalid, no user ID limit is applied\&. +.PP +If the module is called in the auth or account phase, the accounts that were not used recently enough will be disallowed to log in\&. The check is not performed for the root account so the root is never locked out\&. It is also not performed for users with UID higher than the +\fBLASTLOG_UID_MAX\fR +value\&. +.SH "OPTIONS" +.PP +\fBdebug\fR +.RS 4 +Print debug information\&. +.RE +.PP +\fBsilent\fR +.RS 4 +Don\*(Aqt inform the user about any previous login, just update the +/var/log/lastlog +file\&. This option does not affect display of bad login attempts\&. +.RE +.PP +\fBnever\fR +.RS 4 +If the +/var/log/lastlog +file does not contain any old entries for the user, indicate that the user has never previously logged in with a welcome message\&. +.RE +.PP +\fBnodate\fR +.RS 4 +Don\*(Aqt display the date of the last login\&. +.RE +.PP +\fBnoterm\fR +.RS 4 +Don\*(Aqt display the terminal name on which the last login was attempted\&. +.RE +.PP +\fBnohost\fR +.RS 4 +Don\*(Aqt indicate from which host the last login was attempted\&. +.RE +.PP +\fBnowtmp\fR +.RS 4 +Don\*(Aqt update the wtmp entry\&. +.RE +.PP +\fBnoupdate\fR +.RS 4 +Don\*(Aqt update any file\&. +.RE +.PP +\fBshowfailed\fR +.RS 4 +Display number of failed login attempts and the date of the last failed attempt from btmp\&. The date is not displayed when +\fBnodate\fR +is specified\&. +.RE +.PP +\fBinactive=<days>\fR +.RS 4 +This option is specific for the auth or account phase\&. It specifies the number of days after the last login of the user when the user will be locked out by the module\&. The default value is 90\&. +.RE +.PP +\fBunlimited\fR +.RS 4 +If the +\fIfsize\fR +limit is set, this option can be used to override it, preventing failures on systems with large UID values that lead lastlog to become a huge sparse file\&. +.RE +.SH "MODULE TYPES PROVIDED" +.PP +The +\fBauth\fR +and +\fBaccount\fR +module type allows one to lock out users who did not login recently enough\&. The +\fBsession\fR +module type is provided for displaying the information about the last login and/or updating the lastlog and wtmp files\&. +.SH "RETURN VALUES" +.PP +.PP +PAM_SUCCESS +.RS 4 +Everything was successful\&. +.RE +.PP +PAM_SERVICE_ERR +.RS 4 +Internal service module error\&. +.RE +.PP +PAM_USER_UNKNOWN +.RS 4 +User not known\&. +.RE +.PP +PAM_AUTH_ERR +.RS 4 +User locked out in the auth or account phase due to inactivity\&. +.RE +.PP +PAM_IGNORE +.RS 4 +There was an error during reading the lastlog file in the auth or account phase and thus inactivity of the user cannot be determined\&. +.RE +.SH "EXAMPLES" +.PP +Add the following line to +/etc/pam\&.d/login +to display the last login time of a user: +.sp +.if n \{\ +.RS 4 +.\} +.nf + session required pam_lastlog\&.so nowtmp + +.fi +.if n \{\ +.RE +.\} +.PP +To reject the user if he did not login during the previous 50 days the following line can be used: +.sp +.if n \{\ +.RS 4 +.\} +.nf + auth required pam_lastlog\&.so inactive=50 + +.fi +.if n \{\ +.RE +.\} +.SH "FILES" +.PP +/var/log/lastlog +.RS 4 +Lastlog logging file +.RE +.SH "SEE ALSO" +.PP +\fBlimits.conf\fR(5), +\fBpam.conf\fR(5), +\fBpam.d\fR(5), +\fBpam\fR(8) +.SH "AUTHOR" +.PP +pam_lastlog was written by Andrew G\&. Morgan <morgan@kernel\&.org>\&. +.PP +Inactive account lock out added by Tomáš Mráz <tm@t8m\&.info>\&. |