IT Glossary · Cybersecurity
DDoS protection is a service that detects and filters out a flood of malicious traffic from a Distributed Denial-of-Service (DDoS) attack, so that legitimate users can still reach your website, app or network. It works by diverting incoming traffic through "scrubbing" infrastructure that drops attack packets and forwards only clean traffic to you.
A DDoS attack uses many compromised machines (a botnet) to overwhelm a target with more traffic or requests than it can handle, knocking it offline. Attacks come in three broad layers: volumetric (Layer 3/4 — sheer bandwidth floods like UDP/SYN floods that saturate your pipe), protocol attacks (exhausting connection tables or firewalls), and application-layer (Layer 7 — floods of realistic-looking HTTP requests that exhaust servers). DDoS protection defends across these layers. Carrier or cloud "scrubbing" absorbs volumetric floods far upstream of your link — a Tier-1 provider like Tata Communications advertises 28 native scrubbing nodes and 35+ Tbps of ingestion capacity — while detection engines use AI/ML to spot anomalies in real time and mitigate in sub-seconds. Deployment is either always-on (all traffic inspected continuously), on-demand (traffic diverted only when an attack is detected), or hybrid (an on-prem appliance handles small/Layer 7 attacks locally and bursts to the cloud for big floods).
Indian businesses are attacked most during traffic peaks — festive sales (Diwali, Republic Day, Independence Day), exam result days, IPO/ticket drops — precisely when downtime is most expensive. A single hour offline during a Diwali sale can cost a mid-size e-commerce brand lakhs in lost orders and refunds, plus reputational damage. Because most Indian SMBs do not run their own always-on scrubbing, carrier or managed cloud DDoS protection (network-agnostic, so you needn't switch ISP) is the practical way to stay up. Pair it with a WAF for application-layer defence.
Related terms: DDoS Attack, Scrubbing Centre, WAF, Botnet, Layer 7, Volumetric Attack, Always-On Mitigation, CDN
A DDoS attack is the flood of malicious traffic from many machines that tries to knock your service offline. DDoS protection is the defensive service — scrubbing infrastructure plus detection — that filters out that flood and keeps legitimate users connected.
Not a large one. An on-prem firewall sits behind your internet link, so a volumetric flood saturates the pipe (and often the firewall itself) before it can help. Volumetric DDoS must be absorbed upstream in a carrier or cloud scrubbing centre with terabits of capacity. Firewalls and WAFs complement, but do not replace, DDoS scrubbing.
It scales. Budget India-first cloud tools start around ₹999/month for small sites; app-layer managed WAF+DDoS (Indusface AppTrana) starts from ₹6,000/application/month; carrier-grade whole-pipe scrubbing (Tata Communications) is bespoke and priced by protected bandwidth. Start at the tier that matches your risk and traffic, and upgrade as you grow.
National IT Service is an authorised Tata Communications partner — we supply the DDoS Protection Service with INR billing and a GST invoice. WhatsApp +91 98119 98370 for a scoped quote.