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TIME.CONF(5)                             Linux-PAM Manual                            TIME.CONF(5)



NAME
       time.conf - configuration file for the pam_time module

DESCRIPTION
       The pam_time PAM module does not authenticate the user, but instead it restricts access to
       a system and or specific applications at various times of the day and on specific days or
       over various terminal lines. This module can be configured to deny access to (individual)
       users based on their name, the time of day, the day of week, the service they are applying
       for and their terminal from which they are making their request.

       For this module to function correctly there must be a correctly formatted
       /etc/security/time.conf file present. White spaces are ignored and lines maybe extended
       with '\' (escaped newlines). Text following a '#' is ignored to the end of the line.

       The syntax of the lines is as follows:

       services;ttys;users;times

       In words, each rule occupies a line, terminated with a newline or the beginning of a
       comment; a '#'. It contains four fields separated with semicolons, ';'.

       The first field, the services field, is a logic list of PAM service names that the rule
       applies to.

       The second field, the tty field, is a logic list of terminal names that this rule applies
       to.

       The third field, the users field, is a logic list of users or a netgroup of users to whom
       this rule applies.

       For these items the simple wildcard '*' may be used only once. With netgroups no wildcards
       or logic operators are allowed.

       The times field is used to indicate the times at which this rule applies. The format here
       is a logic list of day/time-range entries. The days are specified by a sequence of two
       character entries, MoTuSa for example is Monday Tuesday and Saturday. Note that repeated
       days are unset MoMo = no day, and MoWk = all weekdays bar Monday. The two character
       combinations accepted are Mo Tu We Th Fr Sa Su Wk Wd Al, the last two being week-end days
       and all 7 days of the week respectively. As a final example, AlFr means all days except
       Friday.

       Each day/time-range can be prefixed with a '!' to indicate "anything but". The time-range
       part is two 24-hour times HHMM, separated by a hyphen, indicating the start and finish
       time (if the finish time is smaller than the start time it is deemed to apply on the
       following day).

       For a rule to be active, ALL of service+ttys+users must be satisfied by the applying
       process.

       Note, currently there is no daemon enforcing the end of a session. This needs to be
       remedied.

       Poorly formatted rules are logged as errors using syslog(3).

EXAMPLES
       These are some example lines which might be specified in /etc/security/time.conf.

       All users except for root are denied access to console-login at all times:

           login ; tty* & !ttyp* ; !root ; !Al0000-2400


       Games (configured to use PAM) are only to be accessed out of working hours. This rule does
       not apply to the user waster:

           games ; * ; !waster ; Wd0000-2400 | Wk1800-0800



SEE ALSO
       pam_time(8), pam.d(5), pam(7)

AUTHOR
       pam_time was written by Andrew G. Morgan <morgan AT kernel.org>.



Linux-PAM Manual                            09/19/2013                               TIME.CONF(5)


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