What is DDoS Attack & How to mitigate DDoS? (Infographic)
What is DDoS Attack?
A distributed denial-of-service (DDoS) attack is a malicious attempt to disrupt a targeted server’s, service’s, or network’s normal traffic by flooding the target or its surrounding infrastructure with Internet traffic.
DDoS assaults are effective because they use several compromised computer systems as attack traffic sources. Computers and other networked resources, such as IoT devices, are examples of exploited machinery.
How DDoS process works?
DDoS assaults are carried out via a network of machines linked to the Internet.
These networks are made up of malware-infected PCs and other devices such as Printer, Laptop, Desktop, and Router that can be manipulated remotely by an attacker. Individual devices are known as bots, while a botnet is a collection of bots.
The attacker can direct an attack once a botnet has been built by delivering remote commands to each bot.
When a botnet targets a victim’s server or network, each bot sends requests to the target’s IP address, potentially overloading the server or network and causing a denial-of-service to normal traffic.
Separating attack traffic from normal traffic can be difficult because each bot is a legitimate Internet device.
How to identify DDoS Attacks?
A site or service suddenly becoming slow or unavailable is the most visible indicator of a DDoS attack. However, a variety of factors, such as a legitimate spike in traffic, might result in similar performance concerns. Some of these telltale signals of a DDoS assault can be detected using traffic analytics tools:
🚩over y seconds, an IP address sends x requests.
🚩Due to service interruptions, your server responds with a 503 error.
🚩A ping request’s TTL (time to live) expires.
🚩Employees will notice slowdown concerns if you use the same connection for internal software.
🚩Log analysis solutions reveal a significant increase in traffic.
🚩Unexpectedly large volumes of traffic coming from a single IP address or range of IP addresses.
🚩A surge in traffic from users with similar behavioral profiles, such as device type, geography, or web browser version.
🚩A sudden increase in requests to a single page or endpoint for no apparent reason.
🚩Unusual traffic patterns, such as spikes at unusual times of day or patterns that appear to be abnormal.
How to mitigate DDoS Attacks?
Here’s what you could do to protect your site or web apps against various types of DDoS attacks and help to keep your website online all the time.
- Increase bandwidth.
2. Leverage a CDN Solution, or even better Multi CDN.
3. Implement server-level DDoS protection.
4. Fear the worst, plan for DDoS attacks ahead.
5. Remind yourself that you’re never ‘too small’ to be DDoS’ed.
6. Switch to a hybrid or cloud-based solution.
7. Bullet-proof your network hardware configurations.
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