DDOS with Private DNS servers

Website, Application, Performance DNS & Network
1

What is the name of the domain?

What is the issue you’re encountering

We’re unable to reach our website/domain after setting up DDOS protection. This is due to a premise based DNS server that had A records to direct traffic to the web server. As DDOS protection involves rotating the IP address I’m unsure how to resolve this. Are there any guidelines on how to use DDOS protection in conjunction with private DNS servers?

What steps have you taken to resolve the issue?

No steps can be taken. I would need to delete the entire forward lookup zone for the domain which would break everything.

What feature, service or problem is this related to?

DNS records

2

May I ask for an example IP addresses? Wonder if it really is a DDoS or Cloudflare trying to connect to your origin host/server? :thinking:

Looks like domain is using the assigned Cloudflare nameservers correctly:

May I ask if you’ve setup and added custom NS type of the DNS records under the DNS tab of Cloudflare dashboard for your zone, or using e.g. ns1.atlantaschools.us and ns2.atlantaschools.us somewhere for your school to route the internal traffic or via Active Directory? :thinking:

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