Regards!

I need block some webpage type because i have a wifi network in a college.

I try with the layer7 protocol but not work properly. Any idea for make this efficiency??

Thanks!

Not possible with the MT device, there are too many ways around the programming.
You need to get a router that does DPI $$$, and then pay their subscription service more $$$$.

I need block some webpage type because i have a wifi network in a college.

Ok.. But why do you need to?

If you are the network admin for a college, you are in a losing battle, there are too many ways around it.

Also many teachers/instructors assign YouTube videos to watch, so blocking it will prevent homework from getting done.

Lastly, it is a college, they are adults..

Make an address list and add the FQDNs for the services you want to block, then make a Raw drop list using the created address list. It will work for some services but not all. YouTube has hundreds, maybe thousands, maybe tens of thousands of FQDNs used for their service.

A simple VPN service gets around it though.