I have two kids under the age of 8 and both of them likes to surf the net. Yesterday I noticed that during some online game there was an ad with inappropriate content for kids. Afer that I made some research and found and installed family friendly dns - https://familyfriendlydns.com/. This program stopped inappropriae ads on sites and blocked porn sites but I'm not sure how to do the same on my mac, as this one is only for windows. Appreciate your help.