pam_lastlog(8)

1PAM_LASTLOG(8)                 Linux-PAM Manual                 PAM_LASTLOG(8)
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NAME

6       pam_lastlog - PAM module to display date of last login and perform
7       inactive account lock out
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SYNOPSIS

10       pam_lastlog.so [debug] [silent] [never] [nodate] [nohost] [noterm]
11                      [nowtmp] [noupdate] [showfailed] [inactive=<days>]
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DESCRIPTION

14       pam_lastlog is a PAM module to display a line of information about the
15       last login of the user. In addition, the module maintains the
16       /var/log/lastlog file.
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18       Some applications may perform this function themselves. In such cases,
19       this module is not necessary.
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21       If the module is called in the auth or account phase, the accounts that
22       were not used recently enough will be disallowed to log in. The check
23       is not performed for the root account so the root is never locked out.
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OPTIONS

26       debug
27           Print debug information.
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29       silent
30           Don´t inform the user about any previous login, just update the
31           /var/log/lastlog file.
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33       never
34           If the /var/log/lastlog file does not contain any old entries for
35           the user, indicate that the user has never previously logged in
36           with a welcome message.
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38       nodate
39           Don´t display the date of the last login.
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41       noterm
42           Don´t display the terminal name on which the last login was
43           attempted.
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45       nohost
46           Don´t indicate from which host the last login was attempted.
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48       nowtmp
49           Don´t update the wtmp entry.
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51       noupdate
52           Don´t update any file.
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54       showfailed
55           Display number of failed login attempts and the date of the last
56           failed attempt from btmp. The date is not displayed when nodate is
57           specified.
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59       inactive=<days>
60           This option is specific for the auth or account phase. It specifies
61           the number of days after the last login of the user when the user
62           will be locked out by the module. The default value is 90.
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MODULE TYPES PROVIDED

65       The auth and account module type allows to lock out users which did not
66       login recently enough. The session module type is provided for
67       displaying the information about the last login and/or updating the
68       lastlog and wtmp files.
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RETURN VALUES

71       PAM_SUCCESS
72           Everything was successful.
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74       PAM_SERVICE_ERR
75           Internal service module error.
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77       PAM_USER_UNKNOWN
78           User not known.
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80       PAM_AUTH_ERR
81           User locked out in the auth or account phase due to inactivity.
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83       PAM_IGNORE
84           There was an error during reading the lastlog file in the auth or
85           account phase and thus inactivity of the user cannot be determined.
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EXAMPLES

88       Add the following line to /etc/pam.d/login to display the last login
89       time of an user:
90
91               session  required  pam_lastlog.so nowtmp
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93
94       To reject the user if he did not login during the previous 50 days the
95       following line can be used:
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97               auth  required  pam_lastlog.so inactive=50
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FILES

101       /var/log/lastlog
102           Lastlog logging file
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AUTHOR

108       pam_lastlog was written by Andrew G. Morgan <morgan@kernel.org>.
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110       Inactive account lock out added by Tomáš Mráz <tm@t8m.info>.
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114Linux-PAM Manual                  03/22/2017                    PAM_LASTLOG(8)