Hold on, are you asking how to bypass it with Cloudflare or without Cloudflare?
To do it with Cloudflare, you just enable Cloudflare on the domain. That’s it, no further configuration required. Do mind DNS propgation, etc.
To do it without Cloudflare, I don’t know. It’s likely that iFastNet specifically allowed Cloudflare to bypass the security system, but there might also be another parameter that another website security service could hook into.