TIME.CONF(5)              (06/08/2020)               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.

          A logic list namely means individual tokens that are
          optionally prefixed with '!' (logical not) and separated
          with '&' (logical and) and '|' (logical or).

          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

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     TIME.CONF(5)              (06/08/2020)               TIME.CONF(5)

          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@kernel.org>.

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