On Fri 05 Aug 2016 at 00:02:40 +0000, Mark Fletcher wrote: > On a stretch box I have, I want to allow access to the Internet between the > hours of 9am and 9pm and block it between 9pm and 9am. Ideally allow local > network access throughout but block Internet access between 9pm and 9am, > but I can accept total network blockage in the off times if necessary.
Your ideal is achievable. ip route del default via <gateway_IP> Plus a cron job. > The machine is used as a desktop, so it is not up all the time. It might be > brought up before 9am, in which case it should come up blocked and unblock > at 9am, or it may be brought up after 9am, in which case it should come up > unblocked and block if it is still up at 9pm. Time precision isn't > important. If it came up unblocked before 9am cron could see to it that blocking happens. > An ideal solution would allow dhcp updates, ntp etc to continue but block > any normal user access eg web browsing etc. How essential is this? cron could ip route add default via <gateway_IP> at specific times between 9pm and 9am and then remove the default route. If the machine isn't up all the time it seems unnecessary to me.
