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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@kernel.org>.



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