- In general a router (layer3 device) is no (longer) suitable for your purpose. In the modern days you need to look at firewalling or appliance based firewalling solutions (which can also be moderate in price to start with). Due to the myriad of circumventing possibilities firewalls can do this at the application layer too and or are much more advanced when implementing that kind of requirements in to policies.
M.
-- Each morning when I wake up and look into the mirror I always say ' Why am I so brilliant ? '
When the mirror will then always repond to me with ' The only thing that exceeds your brilliance is your beauty! '
