How to block/filter website ?

RouterOS Beginner Basics
1

Dear All,

I use RB450G
Need help how to filter/block website ? Please need help
(note : only ether3 block will be block)

Thank you

2

This is the simplest and working solution:

/ip firewall filter add chain=forward in-interface=ether1net out-interface=ether3local content=www.site.com action=drop

in-interface is the internet one (put yours)