All You Need To Know About DDoS Attack
Cyber Security - DDoS Attack
What is Distributed Denial Of Service (DDoS) Attack?
A distributed denial of service (DDoS) attack is a malicious attack to cause an online service can’t be accessed by some users, by temporarily interrupting or totally suspending the services of server especially the hosting server it self.
A DDoS attack is launched from varied compromised devices, typically distributed always as a botnet. it’s different from other denial of service (DoS) attacks, therein it uses one Internet-connected device in one network to flood a target with malicious traffic. This is the main different between these two.
Generally, DoS and DDoS attacks can be divided into three types:
- Volume Based Attacks
Consist of ICMP floods, UDP floods and other spoofed-packet floods. The objective of this attack is to saturate the bandwidth of victim site, and the intensity is measured in bits per second (Bps).
- Protocol Attacks
Consist of Ping of Death, fragmented packet attacks, Smurf DDoS, SYN floods and more. This nature of attack is to preoccupy actual resources of server, or some intermediate devices, like load balancers and firewalls. The intensity of this one is measured in packets per second (Pps).
- Application Layer Attacks
Consist of low-and-slow attacks, targeting Apache, GET/POST floods, Windows or OpenBSD vulnerabilities and more. Contain of seemingly real and natural request, web server crashed is the goal in this attacks and the intensity is measured in Requests per second (Rps).
DDoS Attacks Types Generally
Some of the most typicaly used DDoS attack types include:
– UDP Flood
– Ping of Death
– NTP Amplification
– HTTP Flood
The Reason Behind DDoS Attacks
DDoS attacks are becoming the most popular type of cyber threat. And according to recent market research, DDoS attacks are growing rapidly in the past year in both number and volume. Shorter attack duration, but bigger packet-per-second attack volume is the trend now.
Attackers for the most part are motivated by:
- Business feuds
- Cyber warfare