Hi there

You can use BrowseControl to do exactly this ie. allow Internet for acertain number of minutes or schedule it on at certain times of day
You can download the trial from:
http://www.codework.com/bcontrol/product.html

It's quite easy to use and can be used in each teacjer in a classroom.

Regards
Divyesh



djgonnarock@hotmail.com wrote in message
news:<OeV%9.10318$EM3.2392@prv-forum2.provo.novell.com>...
> Hello everyone,
> How can I setup a time mechanism in the firewall filter that I have

here
> at school so that certain clients can access unfiltered information


> from "X" time "Y" time through a specific UDP port. After "Y" time

the
> filter is then on again and the clients can't access any unfiltered


> information, and will be directed to the proxy once again.
> How can this be done?
> I use netware 5.1 for bordermanager.
> - Thanks