Ok, I will answer it. No #IPFS server (that I know of) has any type of ACL in place. If you put a IPFS server online, any file you request through it will end up on its cache. If you put a gateway online, people can put all types of crap there and good luck to you explaining why you have illegal data on your server.
There is also no way to say "Here is a list of other IPFS nodes that are managed by other people that can be trusted" You can make a cluster, but you need to own it all.