How to block Internet port for range of IP Addresses?

Hi Everyone,

How to block internet port for range of IP Addresses. My network address is 192.168.0.0/24
and want to restrict internet for specific range of ips (i.e. 192.168.0.200 to 240). It must be static ips.

And also want to block some websites…

Please help me. How I can do configure on my RouterBoard 450 and Winbox 3.30

Advance Thanks,
Jose Thekkiniath

http://forum.mikrotik.com/t/how-to-block-specific-port-for-range-of-ip-addresses/40122/2