I am very new to Cloudflare, and I am only just getting set up.
I have configured my DNS name to point to an AWS instance. I have attached a security group to this instance to accept traffic from the Cloudflare IPs. However, some clients are getting a closed connection error. If I include a security rule which accepts all traffic on port 443 , they can then access our application. However, this defeats the purpose of restricting traffic to only the Cloudflare IP’s.
I was wondering is there something I check in the security settings . Or something I can get the client to check to see how they are bypassing Cloudflare ?
Also, is there any way in the analysis tools to see what IP the clients request is coming from ?
Any help is appreciated.