my mostly server are running on subdomain with port is 3000,4200,4984,8091 and many more to interconnect with two server to each other.
but when I’m transfer my DNS to Cloudflare my all server are stop working with https only it working with http.
Please let me know to add port.
Cloudflare doesn’t proxy those ports. Unless you use Spectrum on the very expensive Enterprise Plan.
If your servers need to interconnect, they’ll need to reference each other by their origin IP addresses.