Defining it on /etc/hosts should work.
I only ever used /int/, mostly when I shilled the movie nights, so it's fairly limited what I saw. As far as csam goes I haven't seen any. They do have content which we prefer "discouraging", because those might be okay on a proud mom's facebook page, or in the portfolio of a photographer, but on an imageboard it's... yeah. But in literal sense, in front of a court that is not csam. Probably not even obscenity.