Access control with Netfilter

[Sneppe Filip]

NickL [SMTP:va3naNOSPAM@rac.ca] wrote:
>
>Is there any way to control Internet access from NAT-ed machines from
>within my network?   For example I would allow one particular host to
>access the Internet only at the certain time of day.   I would like to
>(similar to Wingate) disallow Internet access overnight to one PC on my
>Network.

You could use cron to schedule different scripts that open/block access
depending on the time. But I am positive there is also a patch in
patch-o-matic that does exactly what you are trying to achieve. 

-Filip