Hello.

I have the follow network infra:

I'm having a regular result through the Gateway ACL to block access for some streaming websites and social networks:

The point is that in this case I have a very limited internet bandwidth and after analyzing the network traffic I noticed that to get a better performance of the bandwidth usage as I want, I need to configure the rule ''allow only'' to avoid bandwidth consumption by unknown services.

Is that a way to configure the ''allow only'' on Gateway ACL through CLI ? Because on GUI we do not have access to this option:

Thanks for your attention.