What is DDOS Attack

• It is stand for Distributed Denial-of-Service Attack.
• In This the malicious user tries to make a Machin or network resource unavailable to user.
• Distributed Denial-of-Service Attack, the incoming traffic flooding the victim originates from many different sources. This effectively makes it impossible to stop the attack simply by blocking a single source.
• Distributed Denial-of-Service Attack (DDoS)attack occurs when multiple system flood the bandwidth or resources of a targeted system, usually one or more web servers.
• it is a cybercrime in Which the hacker floods a server with Internet traffic to prevent users from accessing connected online services and sites.

How DDoS (Distributed Denial-of-Service Attack) attack works and explained ?

How many Types of Distributed Denial-of-Service Attack ?

There are 3 types of DDoS Attacks:–

1. Volume-based attacks :- The attacker simply sends a large volume of packets to the target thereby using up all the resources. The resources used might simply be bandwidth.
2. Application layer attacks:- An application layer DDoS attack (sometimes referred to as layer 7 DDoS attack) is a form of DDoS attack where attackers target the application layer of the OSI model.
3. Protocol attacks :-

DDoS attacks techniques :–

• ICMP Flood
• UDP flood
• Plashing
• HTTP flood
• Amplification Attack

DoS Attack techniques

• Distributed DoS attack
• Degradation-of-service attack.
• Application layer floods
• DDoS extortion
• HTTP POST DoS attack
• Internet Control Message Protocol (ICMP) flood.
• R-U-Dead-Yet (RUDY)
• Peer-to-peer attacks.
• Permanent denial-of-service attacks.
• Reflected / spoofed attack.
• Teardrop attacks.
• Telephony denial-of-service (TDOS).

DoS Attack tools

• Nemesy
• RUDY
• GoldenEye
• UDP flood
• PyLoris
• Tor’s Hammer
• HULK, Blast
• xerxes
• The Low Orbit lon Cannon (LOIC)
• HOIC
• XOIC
• Metasploit & more….