Preventing DDoS attacks
To prevent and mitigate DDoS attacks, DX Cloud grants all customers (using Fastly as their CDN):
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Access to origin shielding Origin shielding is designed to reduce the load on an origin server by centralizing cache fill operations to a limited set of CDN locations. For more details, see Shielding. 
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Automatic resistance to availability attacks 
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Access to Fastly cache IP space 
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Custom DDoS filter creation abilities 
| Learn more at Fastly’s Always-on DDos Mitigation page. | 
Block IP address with ingress
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If you are using Fastly as your CDN in your DX Cloud project, you can block IPs directly from the cockpit. Cool, huh? Check out the instructions for doing that here. 
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If you are not using Fastly as your CDN, you’ll need to manually block the dangerous IP in the ingresssection of your values.yml file.
Instructions
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Go to https://ipinfo.io/www.xxx.yyy.zzz (where www.xxx.yyy.zzzis the suspicious IP). 
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Update your values.yml file with the following snippet: kind: Ingress (1) metadata: annotations: nginx.ingress.kubernetes.io/server-snippet: deny www.xxx.yyy.zzz; (2)1 Specifies the kind Ingress.2 Denies the specific IP address. Only use the `server-snippet` exactly as instructed. Otherwise, you may cause issues with your PaaS deployment.