I host multiple game servers and I am looking for a way to protect them from DDOS and keep other people from knowing the IP. I am planning on using a URL host name and setting up a proxy server. Does anybody have any recommendations for a proxy server that I can use?

EDIT: Probably should have specified, I want to host this on a vps I rent, not a service like cloud flare.

EDIT2: Got everything setup with NGINX, thank you for all your help!