We live in a world, where we can’t take our security for granted. Our personal data is linked with technology through numerous resources. One mistake and the unwanted guest accesses through our information, stalking through our profile and stealing our identity and performing varied aspects of your life.
If you have any content on the internet, you should be well aware of the DDoS attacks. Distributed denial of service (DDoS), is a type of system malware where users are attacked by flooding them with fake traffic.
1. Understanding the Attacks
It is very essential to understand the type of attack before it completely damages your system. There are few common types of attacks, as frequently seen in business.
- DNS flux
Damaging the DNS verdict results into non-availability of network or the entire database of application network.
- UDP elaboration
The attacker blocks the network with unsecured DNS traffic. The traffic, most probably on the third layer is elaborated with the payload traffic is vast as compared to the traffic sending requests, so the service is devastated.
- The seventh layer
Layer 7, Application Layer or HTTP Flooding
The application layer or HTTP flux. The target application is attacked by requests from varied sources. These attacks generate surplus amounts of claims resulting in the slowdown of the server; requests from HTTP, post are frequent. Layer 7 is globally used to attack the e-commerce, banking and startup sites just because of handy operation and cheaper rates.
2. Creation of Threat Model
It is difficult for new enterprises to keep a count on their inventory. Create a threat model for a DDOS attack, in order to keep a track on customer demands and monitoring the growth. Newly developed applications, domains, portals, systems, payment modes are continuously modified and updated, while some are permanently out. So, the organization of the resources is essential. Create a database of all the required web resources, which are needed to be protected from the attacks. This database should have applications, their usage, last updated, current version, and so on.
3. Vulnerability Check
Testing and patching play a vital role regardless of the layer of the DDoS attack. The vulnerabilities open the gates for attackers to get into your system along with the volumetric DDoS attacks.
Test all resources for testing and patching vulnerability check, on a daily basis if possible.
Update your system daily for zero vulnerabilities.
Expansion of patches and updates should be set on priority. The availability and expansion of applications and networks are more towards inviting the attacks.
4. Protection Tools
Numerous tools are available which are helpful in detection and protection of web resources from DDoS attacks. Categorizing the devices in accordance with the attacks is necessary. Tools are classified into two main categories, detection, and mitigation.
Detection: it detects the fake traffic irrespective of the layer of attack before there is a severe threat to the server. The DDoS protection tools rely mostly on the signatures and sources for a warning. The service availability is affected by the traffic hitting critical resources. But detection alone is not potent to look around the data and implement protection rules.
Mitigation: DDoS protection can be automated. Most of the anti-DDoS applications block the fake traffic based on rules and policies which are preconfigured. Here the automatic filtering of traffic which acts as a threat or malware on the use or network layer is essential. Attackers have now discovered new ways of winning over these policies on the application layer.
The tools mentioned above fail to provide attacks to the layer seven against the attacks. So the business population is more concerned with the frequency of these attacks and is on the verge of finding more potential protection systems.
5. Expansion of Firewall
As read before, layer seven DDoS attacks are most dangerous and difficult to stop. Traffic from such attacks resembles normal user behavior. It requires application layer knowledge to detect and protect the system from attack. Layer 7 attacks cause financial damage as compared to layer 3 and 4 strikes. The application firewall or layer 7 firewalls is proven to be the best defense against the volumetric attacks. It blocks threats and malware from vulnerabilities application without blocking the good traffic. The firewall blocks just the malicious traffic.
The incoming traffic is monitored open-eyed, this analysis helps the organization to be alert and generate an alarming system from historical attacks and the attack pattern mechanism.
The traffic monitoring provides timely updates on application or network. There are millions of gigabytes of data streaming across varied locations. And monitoring it across globally is a tedious and challenging task. The traffic can be detected based on suspicious behaviors, botnet signatures, and abnormalities.
So, monitoring should be centralized, and cyber security becomes a need.