DDoS Protection Explained: What It Actually Does for Your Server

What a DDoS attack actually is

A Distributed Denial of Service attack floods your server with so much traffic that it cannot serve real visitors. The "distributed" part means the traffic comes from thousands of machines at once, often hijacked computers and devices, so you cannot simply block one source. The goal is not to break in, it is to drown you.

The main types

• Volumetric: raw bandwidth floods that try to saturate your network link.
• Protocol: attacks that exhaust server resources with malformed or half-open connections.
• Application-layer: slow, targeted requests that look almost real and hammer a specific page or API.

How mitigation works

Modern DDoS protection sits in front of your server and inspects traffic as it arrives. Legitimate visitors pass through; attack traffic is identified by its patterns and dropped before it reaches you. Good mitigation operates at Tbps scale, far larger than any single attack, and it is always on, so there is no window where you are exposed while someone flips a switch.

Why "always-on" matters

Some providers only enable protection after an attack starts, which means your site is already down by the time mitigation kicks in. Always-on protection inspects every packet from the start, so an attack is absorbed before your visitors ever notice. At Corenzy, DDoS mitigation is included on every plan, not sold as an add-on.

What you should still do

Network-level protection handles the flood, but keep your own house in order too: cache aggressively, put a CDN in front of static content, and rate-limit expensive endpoints. Defence works best in layers.

You cannot stop someone from attacking you, but with always-on mitigation in front of your server, the attack becomes their problem, not yours.