While the development of information technology has brought many conveniences to people, it has also brought threats. The importance of defending against DDoS attacks has gradually emerged. DDoS is the most destructive attack method among many network attacks. After years of continuous development, it has become the preferred attack method of different organizations and individuals, used for blackmail, retaliation, and even network warfare.
If you want to effectively defend against DDoS attacks, you must first understand what DDoS (Denial of Service Attack) is? In fact, it can be simply understood to make a public website inaccessible. The method to achieve this goal is not difficult, that is, to constantly make service requests, so that legitimate users' requests cannot be processed in time. So what is "distributed"? In fact, with the development of the Internet, many large enterprises have strong service provision capabilities, so it is no longer a problem to deal with a single request attack. The road is one foot high, and the magic is high, so the attacker organizes many accomplices and makes service requests at the same time, occupying server resources, causing network congestion until the website is completely inaccessible, which is called "distributed".
However, in reality, the average attacker cannot organize partners from all over the world to coordinate "battle", so they will use "botnets" to control N many computers to attack. So the question is again, what is a "botnet"? A "botnet" is a large-scale network in which a large number of bots are combined in a certain way and controlled in a one-to-many manner for malicious purposes. It can also be said to be a compound attack method.
Because the number of zombie hosts is large and widely distributed, the degree of damage and corresponding DDoS protection are very difficult. Botnets are highly controllable. The controller can disconnect from the botnet after issuing commands, and the control commands will be automatically spread and executed among bots. When enterprises are defending against DDoS, although many botnets of this botnet can be discovered by capturing a node, it is difficult to get a complete picture of them, and even if some botnets are blocked, it will not have a serious impact on the survival of the entire botnet. .
Now that we know what DDoS is, let's talk about its historical development. In the early days, hackers were mostly to show off their personal skills, so the choice of attack targets was random and entertaining, and there were no fixed measures to defend against DDoS attacks. Later, some religious organizations and commercial organizations discovered the effects of this attack, and attacked specific targets with the purpose of extortion and retaliation, and developed some corresponding tools to ensure that the cost of the attack was reduced. When national-level political forces realized this value, DDoS began to be weaponized and could easily be used in precision-targeted cyber warfare.
The current DDoS defense has no time to delay. It is an important part of every Internet company's network security defense work, and its importance is self-evident. Although there is no good solution once and for all, it is not without corresponding solutions. It is mainly confronted by maintenance and scanning. At the same time, with a solution to deal with it, it also needs to pay more attention to network security and do daily maintenance and monitoring measures and emergency plans.
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