Why DDoS Protection Is Now an Enterprise Priority
A DDoS attack can take down your website, portal or API in seconds. In 2024, the largest attack on record reached 5.6 Tbps. But size is only part of the story. Enterprise teams responsible for DDoS protection now face attacks that are cheaper to launch, harder to stop and often used as cover for data theft.
DDoS-for-hire services are cheap and easy to rent, so the barrier for attackers is very low. Many attacks also target the application layer instead of raw bandwidth, which standard firewalls are not built to catch. This article gives you a three-phase DDoS protection playbook: what to do before, during and after an attack.
DDoS Attacks Are Bigger, Faster and Cheaper
Attacks now mix bandwidth floods with application-layer tricks. In the past, only large groups could launch big attacks, but today almost anyone can rent a botnet. As a result, every enterprise with public services is a target, not just banks and governments.
What a DDoS Attack Costs
Downtime is expensive. Every minute a customer-facing service is offline costs revenue, staff time and trust, and a long outage adds recovery costs and possible regulatory trouble. In India, CERT-In also requires cyber incidents to be reported within 6 hours. So an attack becomes a compliance event as well as an outage.
Can a Firewall Provide DDoS Protection?
In short, no. Firewalls filter traffic by rules, such as allowing a port or blocking an IP. But a DDoS attack sends millions of requests that each look normal on their own. So the firewall lets them through one by one until your server or app collapses under the volume.
Application-layer (Layer 7) DDoS attacks also mimic real user traffic. They send valid HTTP requests, just millions of them, so your firewall cannot tell a real customer from an attacker. That is why you need cloud-based scrubbing that stops the flood before it reaches your network.
Firewalls inspect packets one at a time, but DDoS attacks work by sending millions of normal-looking requests. So the firewall approves each one until the server behind it collapses. Cloud DDoS scrubbing stops the flood before it reaches your firewall.
DDoS Protection Phase 1: Before the Attack
Good DDoS protection starts with planning. Most damage happens because there was no plan, no tooling and no rehearsal. Here is what to set up before an attack ever hits.
Know Your Attack Surface
First, list every public-facing site and app: websites, APIs, portals, DNS servers and email gateways. Then check which ones have DDoS protection and which do not, because you cannot protect what you have not mapped. Also include branch office internet links, since attackers go for the weakest entry point.
Turn On Always-On Cloud DDoS Protection
On-demand scrubbing takes time to switch on, while modern attacks can peak almost immediately. So always-on protection is now the baseline. Route your traffic through a cloud scrubbing provider such as Cloudflare, Akamai or AWS Shield Advanced that filters bad traffic around the clock. Also, attacks are absorbed before they reach your network.
Set Up Rate Limiting and Geo-Blocking
Rate limiting caps how many requests one IP can make per second, which stops simple floods quickly. Also, if most of your customers are in India, geo-blocking can block traffic from countries you do not serve. Together, these two controls stop many attacks before they cause harm.
Build a DDoS Attack Response Plan
A plan on paper is better than no plan, but a tested plan is better still. Your DDoS response plan needs four things:
- Escalation contacts: Who to call in the first 5 minutes, such as your ISP, scrubbing provider and internal teams
- Runbook steps: What to do in what order, for example activating scrubbing, blocking known bad IPs and scaling systems
- Communication plan: How to update leadership, customers and the regulator (CERT-In requires reporting within 6 hours)
- Roles and ownership: Who makes decisions; one person with authority to act, not a committee
Run a practice drill once a quarter. Simulate a DDoS attack and walk through your response plan step by step, because the gaps you find in a drill are the ones that would hurt you in a real attack.
What to Do During a DDoS Attack: Phase 2
The first 15 minutes of a DDoS attack decide the damage. With solid DDoS protection planning, you act fast; without it, you scramble and the attacker wins. Here is what to do during an attack, step by step.
Activate Scrubbing and Escalate Immediately
First, confirm the attack is real and not a traffic spike from a marketing campaign. Then switch on your scrubbing service if it is not always on. Also, escalate to your ISP and managed security provider at the same time. Speed matters more than perfection here, so act first and refine later.
Update With Stakeholders
Next, tell your leadership team, customer support and legal. If customers are affected, post a status update. Also start the CERT-In reporting clock, since you have 6 hours to report. Do not wait for full details before you communicate; share what you know and update as you learn more.
Watch, Adjust and Log
Meanwhile, watch your dashboards. DDoS attacks often change tactics mid-attack, moving from network level to application layer or from one target to another. So be ready to adjust your rules. Also log everything: timestamps, traffic volumes, actions taken and decisions made. You will need this evidence for the review and for regulators.
DDoS attacks are sometimes used as a smokescreen. While your team fights the flood, attackers may be quietly stealing data through another channel. So always check for secondary attacks during a DDoS incident.
Talk to an ExpertNot sure your DDoS defenses would hold? Review them with our security team.
Phase 3: After the Attack, Learn and Harden
The attack is over and your systems are back online, but the work is not done. Phase 3 is where many firms fail, because they go back to normal without learning anything. Here is how to use every attack to get stronger.
Run a Team Review
Within 48 hours, gather everyone involved and answer three questions. What worked? Which parts did not? And what would we do differently? Keep the review blame-free, because that is how the real gaps come out. Also record the attack profile: type, size, duration, target and how it changed over time.
Update Your DDoS Attack Response Plan
Every real attack teaches you something your tabletop exercise missed. So update your plan with the new lessons, fixing the slow alerts, communication gaps and tool limits you found. Then test the updated plan within 30 days.
Test Your DDoS Protection Regularly
Finally, schedule DDoS protection tests at least twice a year. Use a testing service that sends safe attack traffic to your scrubbing layer. That way you confirm that your protection actually works, not just that it is switched on. That is the difference between a plan and a proven defense.
The Short Version
Key Takeaway Enterprise DDoS protection works in three phases. Prepare before the attack with always-on scrubbing and a tested plan. Respond during the attack with speed and clear roles. Then learn afterwards by reviewing, updating and testing again.
How Signisys Delivers Managed DDoS Protection
Signisys provides managed DDoS protection and WAAP services for enterprises that need always-on defense without building an internal DDoS team.
Managed WAAP and DDoS Protection
Signisys deploys cloud-based DDoS scrubbing and web application protection across all your public sites and apps. It covers bandwidth floods, application-layer attacks, API abuse and bot traffic, and because protection is always on, there is no start-up delay when an attack begins.
24×7 DDoS Response
Our SOC team monitors for DDoS around the clock and escalates as soon as an attack is confirmed. We also help with CERT-In reporting, stakeholder updates and post-incident reports. So your team can focus on business recovery while we handle the defense.
India Compliance Built In
DDoS protection controls are mapped to RBI requirements, CERT-In reporting rules and SEBI cyber resilience guidelines. So audit-ready evidence comes as part of the service.
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