Cloudflare

Authoritative DNS holds the records used to resolve a domain. When a record is proxied, its answer points to the Cloudflare network instead of sending visitors directly to the origin address. Resolving a name and establishing a connection are separate stages, even though both belong to the same visit.

On an Anycast network, the same address can be announced from multiple points of presence. Internet routing determines which path is used, and that destination is not necessarily the geographically closest one. This distribution brings delivery closer to many visitors and allows protection to act before the application environment.

There are two segments to consider: browser to edge and edge to origin. Encryption and certificate validation need to protect the complete chain, preserving communication confidentiality and authenticity. Protecting only the connection visible in the browser would leave that work incomplete.

The policy accepts TLS 1.2 and later, with TLS 1.3 enabled. HTTP/3 is available between compatible visitors and the edge. HSTS tells supporting browsers to require HTTPS for one year, including subdomains. Secure transport protects communication; it does not validate data or grant permissions inside the system.

DDoS mitigation and request filtering address different problems. A volumetric attack attempts to exhaust capacity; a malicious request may target a specific path with little traffic. Edge rules complement distributed mitigation with decisions based on the characteristics of each access.

Rate limiting contains automated bursts and filtering evaluates request characteristics, without blocking legitimate use. Whatever the edge allows still goes through server-side validation and authorization.

When the cache holds a valid copy of an eligible resource, the edge answers without fetching the content from the origin, which reduces repeated transfers and work in the application. The hit depends on policy, freshness and the requested version: not every response is cacheable.

Public files and personalized responses have different requirements. Long cache lifetimes can suit immutable resources, while content based on permissions or private data needs a different policy. Freshness must follow the nature of the response instead of applying one indiscriminate rule to the entire project.

An edge layer belongs to a broader protection design. Reducing origin exposure keeps control of the entry point and separates public delivery from the application environment, a result that comes from the architecture behind the domain rather than from the proxy in front of it.

This network restriction has a specific purpose: control the path web traffic uses to arrive. It does not authenticate users or fix an authorization flaw in code. Permissions, isolation and server-side validation remain responsible for what a request may do after it crosses the edge.

DNS, transport, filtering, caching and origin controls form the entry foundation for Daen projects. Each layer solves part of the problem and changes when the application changes: a rule suited to public files is usually wrong for login routes, forms or responses with private data.

Cloudflare participates in this architecture as an edge service. Secure development, environment updates, backups and data recovery stay with Daen operations: an edge provider covers the path up to the origin, not what happens after it.