how to restrict internet access to particular computers without turning modem off?

[ellencm2000]

How can I restrict internet access on my childrens computers at night. I would like to do it without turning the modem off.

 

[Hawkeye22]

Does your router support ACL's (Access Control List)? If so you can most likely block them by their MAC address and possibly even put the ACL in a schedule so that you could do things like block between the hours of 8:00pm - 7:00am. Read your router manual for more information or find the router manual online.