For a self-hosted application with a valid SSL certificate and support for OAuth, what are the benefits that Cloudflare Access provides? From what I can tell, it also filters traffic to possibly block attacks? Can it even be used with a self-hosted app if you aren't also running Cloudflare Tunnel? Is there a better alternative (that also integrates with major OAuth providers like Google, Github, etc) for self-hosters? Thanks for the help in understanding how this works.