Mikrotik Firewall

1. IP -- > Firewall - you can creats all/deny wesites rules under filter rules

2. First Creat Address list in address list, click plus sign -> List name then IP address or range, hit apply ok.

3. Click Filter Rules --> Plus sign --> under genreal Chain(forward) Src. addr (192.168.2.0/24) ip or pool, Select Src. address list ( block youtube ) that created in address lists. hit ok apply

4. Drag and drop rules in appropriate order which rule which should be first match.