Blocking all outgoing traffic except http/https?

Hi. I’m trying to configure the firewall properly to block all outgoing traffic except for ports 80 and 443.

I already tried some rules suggested by the user Rlb but when I get no internet access at all when I use them. Here is the link to my previous comment about it My little side project: A Peplink Surf SOHO FAQiki for users new to enterprise routers and networking. (lots of images) - #7 by Rlb .