Cloudflare Network Security case studies
Cloudflare Network Security · Put your knowledge to work in context.
The Cloudflare Network Security credential is listed in this catalog as a single-domain exam, with Network Security weighted at 100%. However, the official Cloudflare certification pages we retrieved returned 404 errors, so no authoritative details on exam format, question count, duration, passing score, fee, retake policy, or validity period are available. This page therefore describes the credential only at the level the catalog supports and avoids inventing specifics. The intended audience is security and network professionals who design, deploy, or operate Cloudflare's network security controls - for example DDoS mitigation, web application firewall, bot management, and Zero Trust access - and who want a structured way to validate that knowledge. The Cloudflare Network Security case studies are 5 cases and about 2,821 words.
1Hardcoded Game IPs Under a 220 Gbps UDP Flood
Northwind Interactive runs six game servers on the leased /24 198.51.100.0/24, currently originated by its ISP. The game client connects directly to those IPs over UDP 27015–27030 and hardcodes them; average latency is 38 ms and the studio SLA promises under 60 ms.
603 words, about 3 min2GraphQL False Positives After Raising OWASP Paranoia
HelioDocs is a B2B SaaS on Cloudflare Business. Its main API is a single POST /graphql endpoint accepting JSON bodies up to 256 KB.
596 words, about 3 min3Credential Stuffing Through Mobile Carrier NAT
Meridian Credit Union's online banking login is protected by Cloudflare Enterprise. Between 08:00 and 09:30, /login and /oauth/token received 48,000 requests/min from 22,000 IPs; 74% of source IPs are in mobile carrier NAT ranges shared by thousands of users.
552 words, about 3 min4Origin IP Found in DNS History and Certificate Transparency
Vantage Retail's origin is at 203.0.113.10 and is supposed to be hidden behind Cloudflare. A researcher found the IP in a 2023 DNS history dataset and in a certificate transparency log for origin.example.com.
525 words, about 3 min5Partner API mTLS and Schema Validation With Legacy TLS Clients
CareShield Insurance exposes a partner API at api.example.com/v2/claims on Cloudflare Enterprise. Partners use client certificates issued by CareShield's PKI.
545 words, about 3 min