

The attack method that paralyzes the network server by sending a large number of data packets is a DDoS attack (distributed denial of service attack). DDoS attacks will send a large number of service request packets to the target host, and the services requested by these packets often consume a large amount of system resources, causing the target host to be unable to provide normal services to users, and even cause the system to crash.
Distributed Denial of Service attack (DDoS in English) refers to multiple attackers in different locations attacking one or more data at the same time. Launch an attack against one target, or an attacker controls multiple machines in different locations and uses these machines to attack the victim simultaneously. Since the origin of the attack is distributed in different places, this type of attack is called a distributed denial of service attack, and there can be multiple attackers.
Attack Principle
Distributed Denial of Service Attack Principle Distributed Denial of Service Attack DDoS is a special form of denial of service attack based on DoS. It is a distributed , coordinated large-scale attack methods.
A single DoS attack is generally a one-to-one attack. It takes advantage of some defects in network protocols and operating systems, and uses deception and disguise strategies to carry out network attacks, flooding the website server with a large number of messages requiring replies. , consuming network bandwidth or system resources, causing the network or system to be overwhelmed and paralyzed and stop providing normal network services.
Compared with DoS attacks initiated by a single host, distributed denial-of-service attacks (DDoS) are group actions initiated simultaneously with the help of hundreds or even thousands of hosts that have been invaded and installed with attack processes.
A complete DDoS attack system consists of four parts: attacker, main control terminal, agent terminal and attack target. The main control end and the agent end are used to control and actually launch attacks respectively. The main control end only issues commands and does not participate in actual attacks. The agent end sends actual DDoS attack packets.
The attacker has control or partial control over the computers on the main control side and the agent side. During the attack, it will use various means to hide itself from others.
Once the real attacker transmits the attack command to the host, the attacker can close or leave the network. The main control terminal issues commands to each agent host. This way the attacker can evade tracking.
Each attack proxy host will send a large number of service request packets to the target host. These packets are disguised and their source cannot be identified, and the services requested by these packets often consume a large amount of system resources. , causing the target host to be unable to provide normal services to users. It can even cause the system to crash.
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