Sparking

My advice: only forward ports 8080 and 443, then make sure that you have fail2ban or crossed properly set up on your reverse proxy. After that, you are pretty much fine as long as you keep on top of updating your containers.

I would be careful about which apps you proxy. Idk why you need to access the admin portal for pi hole worldwide. If you really want to do that, you should set up a vpn.

Apple probably just lets it happen.

People are saying that it is a cloud managed reverse proxy, but I would not recommend using it like this. You should be running a reverse proxy on your own hardware, imo.

It is still useful because you can use it as just a proxy. You can point your dns to your cloudflare tunnel endpoint and cloudflare will screen all traffic going to your server. I’ve actually stopped using it, but it is a decent way to auto feel all the random internet traffic pitfalls like portscanning bonnets. Also putting something between your server IP and your domain is nice.

You can register with multiple instances, but you don’t need too, because you can view, post, comment and vote on any instance that your home instance is federated with.

So you only need one account.