What is the Process for Mitigating a DDoS Attack?

By Haseeb Awan

What is DDoS Mitigation?

The technique of effectively safeguarding a target from a distributed denial of service (DDoS) attack is called "DDoS mitigation."

DDoS Mitigation Steps

You can use these four steps to describe a typical mitigation process generally:

  • Detection: The recognition of traffic flow irregularities that may indicate the escalation of a DDoS attack. Your ability to identify an attack as soon as possible—ideally, instantly—determines your effectiveness.
  • Diversion: Traffic is diverted from its intended destination through BGP (Border Gateway Protocol) or DNS (Domain Name System) routing and filtered or wholly discarded. Since DNS routing is continuously active, it can swiftly react to attacks and successfully against both application-layer and network-layer threats. Either on-demand or always-on BGP routing is available.
  • Filtering: DDoS traffic eliminates, typically, by seeing patterns that rapidly separate genuine traffic (i.e., users, search engine bots) and malevolent users. You are proactive when you can stop an attack without affecting your users' experience. The goal is for site visitors to understand your solution thoroughly.
  • Analysis: System analytics and logs can collect data regarding an attack to find the perpetrator(s) and boost potential resilience. The traditional logging method can offer insights but is not real-time and may need extensive human analysis. Comprehensive security analytics approaches can provide a quick understanding of attack details and detailed visibility into attack flow.
Also, Read What Is A DDoS (Distributed Denial of Service) Attack?

How to Choose a Mitigation Provider?

You must also consider several other crucial factors when selecting a mitigation supplier. These consist of:

Network Capacity

Network capacity is still a fantastic tool for comparing DDoS mitigation services. It demonstrates the overall flexibility you have at your disposal throughout an attack.

For instance, a one Tbps (terabits per second) network, less the bandwidth needed to sustain its normal operations, can potentially block up to the same malicious traffic.

Most cloud-based mitigation solutions have multi-Tbps network bandwidth, far more than any customer could ever need. In contrast, internal system capability and the size of a company's network pipe are the default limits for on-premise DDoS mitigation systems.

Key features:

  • Available bandwidth, defined in Tbps or Gbps, can be used to thwart an attack. An attack with bandwidth more significant than your DDoS provider might target your servers.
  • Deployment model: cloud-based or on-premises solutions. Cloud-based systems can withstand high-volume DDoS attacks and are elastically adaptable.

Processing Capacity

If you also considered the processing capacities of your mitigation system in addition to throughput capacity. They depict by forwarding rates, which express in Mpps (millions of packets per second).

Attacks today frequently exceed 50 Mpps, and some can go as high as 200–300 Mpps. Your mitigation supplier's defences will be overwhelmed by an attack with more processing power than it can handle, so you should find out about any limitations upfront.

Key features:

  • The forwarding rate expresses in Mpps. Your servers will strike by an attack beyond your DDoS supplier's maximum forwarding rate.
  • Forwarding method: It includes DNS or BGP routing. DNS routing is always active and can defend both network- and application-layer threats. BGP routing can be always-on or activated when needed, protecting against almost any attack.

Latency

It is crucial to realize that, eventually, genuine traffic to your application or website will go through the network of the DDoS provider:

  • When an attack happens, traffic shifts to the DDoS supplier if DDoS solutions are in demand.
  • If DDoS protection is constantly active (which has several benefits), all of your traffic will go through the provider's servers.

Your users could experience excessive latency if the link between your data centre and your DDoS supplier is not very efficient. You should consider:

  • Which locations do the DDoS supplier offer as points of presence (PoP), and how near are they to your data centre? (s)
  • Whether your DDoS supplier has PoPs near where your primary clientele locates
  • Whether the DDoS supplier uses cutting-edge routing methods to guarantee the best communication between your data centre and your consumers

The first factor is the most crucial; for instance, imagine an Indian corporation collaborating with a European-only DDoS service. Each user request must first travel to the European Point of Presence (PoP), then to the Indian data centre, then back to the European data centre, and finally back to the user.

It will still occur even if the user locates in Europe. Latency increases if the user, like the business in our example, is located in India or another unsupported country.

Also, Read Top 7 DDoS Attack Tools to Fight Against DDoS Attacks

Time to Mitigation

Once an attack discovers, it is crucial to act quickly to mitigate it. Most attacks can easily destroy a target, but the healing process may take hours. This interruption can negatively impact your organization for weeks or even months.

Always-on systems benefit in this situation since they offer proactive detection. They provide almost instantaneous mitigation, frequently defending businesses from the initial round of an attack. Find a solution that can react to an attack in seconds.

However, not every always-on solution provides this degree of responsiveness. That is why, in addition to evaluating a DDoS security provider throughout a service trial, asking regarding time to mitigation should be on your checklist.

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