On Mon 2008-05-19 17:18:14 -0400, Kai Wollweber wrote: > we want to enable/disable clients in classrooms depending on a > timetable. This means not to disable any user at all. Intended is to > disable certain terminals. > > At a given time a new login should be impossible whereas a running > session may continue. > > Is it possible to disable login on a certain set of clients at given > times?
The most common way to do something like this is with PAM, using the pam_time module, and modifying /etc/security/time.conf to affect the relevant services. For further details, see: http://www.kernel.org/pub/linux/libs/pam/Linux-PAM-html/sag-pam_time.html If you're unfamiliar with using PAM to administer your system, you might want to start from the beginning of the PAM systems' administrators guide. It's a very flexible (if somewhat arcane) system: http://www.kernel.org/pub/linux/libs/pam/Linux-PAM-html/Linux-PAM_SAG.html Regards, --dkg
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