Common Types of DDoS Attacks

"Internet" refers to the global information system, which is an interactive platform for mutual communication, mutual communication and mutual participation. With the rapid development of the Internet, more and more websites emerge as the times require, but various problems also follow. One of the most serious problems is network security, which should be like every household's fire prevention and theft-proof problems, so as to prevent in the bud. When you don't even think that you will become a target, the threat has already appeared. Once it happens, you are often unprepared and cause great losses. The most important factor leading to this problem is DDoS attack which is popular among hackers because of its low cost and powerful destructive power. In fact, there are many kinds of DDoS attacks, not only a single attack mode. In order to enterprises can better DDoS attacks on defense, here inrtoduces a simple popularization of several common DDoS attack forms.

Network layer attack:

 the typical attack type is UDP reflection attack, such as NTP flood attack. This kind of attack mainly uses large traffic to congestion the network bandwidth of the attacker, resulting in the attacker's business unable to respond to customer access normally.

Transport layer attack:

 typical attack types include SYN Flood attack, connection number attack, etc. these attacks can achieve the purpose of denial of service by occupying the connection pool resources of the server.

Session layer attack: 

the typical attack type is SSL connection attack, which takes up the SSL session resources of the server, so as to achieve the purpose of denial of service.

Application layer attack:

 typical attack types include DNS flood attack, HTTP flood attack, game dummy attack and so on. This kind of attack takes up the application processing resources of the server, consumes the processing performance of the server greatly, so as to achieve the purpose of denial of service.

With the development of global Internet business and cloud computing, it can be predicted that the frequency of DDoS attacks against cloud data centers will increase significantly, and the attack means will be more complex. Network security awareness is an important prerequisite to ensure network security. Many network security incidents are related to the lack of security awareness. Security work is a long-term and continuous work rather than phased work, so we need to keep a vigilance at all times. Moreover, network security is not only the responsibility of an enterprise, but also the common responsibility of the whole society. We need to work together.